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Groups > comp.sys.mac.portables > #1238 > unrolled thread
| Started by | ant@zimage.comANT (Ant) |
|---|---|
| First post | 2019-04-02 13:05 -0500 |
| Last post | 2019-04-06 08:00 -0400 |
| Articles | 20 on this page of 75 — 12 participants |
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Unable to boot up a 15" 2008 MacBook Pro. ant@zimage.comANT (Ant) - 2019-04-02 13:05 -0500
Re: Unable to boot up a 15" 2008 MacBook Pro. Alan Baker <nunya@ness.biz> - 2019-04-02 11:12 -0700
Re: Unable to boot up a 15" 2008 MacBook Pro. ant@zimage.comANT (Ant) - 2019-04-02 13:23 -0500
Re: Unable to boot up a 15" 2008 MacBook Pro. YK <xxxxx@dialme.com> - 2019-04-02 19:29 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. Alan Baker <nunya@ness.biz> - 2019-04-02 16:31 -0700
Re: Unable to boot up a 15" 2008 MacBook Pro. ErikRS <mac-dane@is.invalid> - 2019-04-04 21:10 +0200
Re: Unable to boot up a 15" 2008 MacBook Pro. Wade Garrett <wade@cooler.net> - 2019-04-04 18:22 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. Alan Browne <bitbucket@blackhole.com> - 2019-04-04 18:36 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. Wade Garrett <wade@cooler.net> - 2019-04-08 09:57 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. Lewis <g.kreme@gmail.com.dontsendmecopies> - 2019-04-05 04:04 +0000
Re: Unable to boot up a 15" 2008 MacBook Pro. Wade Garrett <wade@cooler.net> - 2019-04-08 10:10 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. ErikRS <mac-dane@is.invalid> - 2019-04-07 14:47 +0200
Re: Unable to boot up a 15" 2008 MacBook Pro. ant@zimage.comANT (Ant) - 2019-04-04 22:32 -0500
Re: Unable to boot up a 15" 2008 MacBook Pro. nospam <nospam@nospam.invalid> - 2019-04-05 08:29 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. Jolly Roger <jollyroger@pobox.com> - 2019-04-05 15:52 +0000
Re: Unable to boot up a 15" 2008 MacBook Pro. nospam <nospam@nospam.invalid> - 2019-04-05 12:40 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. David in Devon <BDonTJ@REMOVE.gmail.com> - 2019-04-05 17:49 +0100
Re: Unable to boot up a 15" 2008 MacBook Pro. nospam <nospam@nospam.invalid> - 2019-04-05 12:54 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. David in Devon <BDonTJ@REMOVE.gmail.com> - 2019-04-05 17:59 +0100
Re: Unable to boot up a 15" 2008 MacBook Pro. nospam <nospam@nospam.invalid> - 2019-04-05 13:10 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. Alan Browne <bitbucket@blackhole.com> - 2019-04-05 15:08 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. David in Devon <BDonTJ@REMOVE.gmail.com> - 2019-04-05 20:29 +0100
Re: Unable to boot up a 15" 2008 MacBook Pro. nospam <nospam@nospam.invalid> - 2019-04-05 15:35 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. David in Devon <BDonTJ@REMOVE.gmail.com> - 2019-04-05 21:59 +0100
Re: Unable to boot up a 15" 2008 MacBook Pro. nospam <nospam@nospam.invalid> - 2019-04-05 17:04 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. David in Devon <BDonTJ@REMOVE.gmail.com> - 2019-04-05 22:31 +0100
Re: Unable to boot up a 15" 2008 MacBook Pro. Alan Baker <nunya@ness.biz> - 2019-04-05 14:33 -0700
Re: Unable to boot up a 15" 2008 MacBook Pro. David in Devon <BDonTJ@REMOVE.gmail.com> - 2019-04-05 22:36 +0100
Re: Unable to boot up a 15" 2008 MacBook Pro. Alan Baker <nunya@ness.biz> - 2019-04-05 14:55 -0700
Re: Unable to boot up a 15" 2008 MacBook Pro. nospam <nospam@nospam.invalid> - 2019-04-05 17:37 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. Alan Baker <nunya@ness.biz> - 2019-04-05 14:56 -0700
Re: Unable to boot up a 15" 2008 MacBook Pro. nospam <nospam@nospam.invalid> - 2019-04-05 18:01 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. Panthera Tigris Altaica <northentiger@outlook.com> - 2019-04-05 18:07 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. Alan Baker <nunya@ness.biz> - 2019-04-05 15:15 -0700
Re: Unable to boot up a 15" 2008 MacBook Pro. Alan Baker <nunya@ness.biz> - 2019-04-05 14:08 -0700
Re: Unable to boot up a 15" 2008 MacBook Pro. David in Devon <BDonTJ@REMOVE.gmail.com> - 2019-04-05 22:32 +0100
Re: Unable to boot up a 15" 2008 MacBook Pro. nospam <nospam@nospam.invalid> - 2019-04-05 17:37 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. Panthera Tigris Altaica <northentiger@outlook.com> - 2019-04-05 17:35 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. danny burstein <dannyb@panix.com> - 2019-04-05 20:04 +0000
Re: Unable to boot up a 15" 2008 MacBook Pro. nospam <nospam@nospam.invalid> - 2019-04-05 16:26 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. David in Devon <BDonTJ@REMOVE.gmail.com> - 2019-04-05 22:50 +0100
Re: Unable to boot up a 15" 2008 MacBook Pro. nospam <nospam@nospam.invalid> - 2019-04-05 18:01 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. nospam <nospam@nospam.invalid> - 2019-04-05 15:35 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. David in Devon <BDonTJ@REMOVE.gmail.com> - 2019-04-05 20:40 +0100
Re: Unable to boot up a 15" 2008 MacBook Pro. danny burstein <dannyb@panix.com> - 2019-04-05 20:05 +0000
Re: Unable to boot up a 15" 2008 MacBook Pro. Jolly Roger <jollyroger@pobox.com> - 2019-04-05 20:06 +0000
Re: Unable to boot up a 15" 2008 MacBook Pro. Panthera Tigris Altaica <northentiger@outlook.com> - 2019-04-05 16:17 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. Panthera Tigris Altaica <northentiger@outlook.com> - 2019-04-05 16:14 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. David in Devon <BDonTJ@REMOVE.gmail.com> - 2019-04-05 22:19 +0100
Re: Unable to boot up a 15" 2008 MacBook Pro. nospam <nospam@nospam.invalid> - 2019-04-05 17:37 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. David in Devon <BDonTJ@REMOVE.gmail.com> - 2019-04-05 22:44 +0100
Re: Unable to boot up a 15" 2008 MacBook Pro. nospam <nospam@nospam.invalid> - 2019-04-05 17:50 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. David in Devon <BDonTJ@REMOVE.gmail.com> - 2019-04-08 16:55 +0100
Re: Unable to boot up a 15" 2008 MacBook Pro. Alan Browne <bitbucket@blackhole.com> - 2019-04-06 10:40 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. nospam <nospam@nospam.invalid> - 2019-04-06 11:29 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. Alan Browne <bitbucket@blackhole.com> - 2019-04-06 15:13 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. Lewis <g.kreme@gmail.com.dontsendmecopies> - 2019-04-06 19:57 +0000
Re: Unable to boot up a 15" 2008 MacBook Pro. Alan Browne <bitbucket@blackhole.com> - 2019-04-06 17:08 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. nospam <nospam@nospam.invalid> - 2019-04-07 21:05 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. nospam <nospam@nospam.invalid> - 2019-04-06 15:58 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. Jolly Roger <jollyroger@pobox.com> - 2019-04-06 20:04 +0000
Re: Unable to boot up a 15" 2008 MacBook Pro. Alan Browne <bitbucket@blackhole.com> - 2019-04-06 17:10 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. Alan Browne <bitbucket@blackhole.com> - 2019-04-06 17:13 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. nospam <nospam@nospam.invalid> - 2019-04-07 21:05 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. David in Devon <BDonTJ@REMOVE.gmail.com> - 2019-04-08 11:58 +0100
Re: Unable to boot up a 15" 2008 MacBook Pro. nospam <nospam@nospam.invalid> - 2019-04-08 10:07 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. David in Devon <BDonTJ@REMOVE.gmail.com> - 2019-04-08 16:11 +0100
Re: Unable to boot up a 15" 2008 MacBook Pro. nospam <nospam@nospam.invalid> - 2019-04-08 11:19 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. David in Devon <BDonTJ@REMOVE.gmail.com> - 2019-04-08 20:23 +0100
Re: Unable to boot up a 15" 2008 MacBook Pro. Alan Browne <bitbucket@blackhole.com> - 2019-04-06 17:29 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. nospam <nospam@nospam.invalid> - 2019-04-07 21:05 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. ant@zimage.comANT (Ant) - 2019-04-05 21:55 -0500
Re: Unable to boot up a 15" 2008 MacBook Pro. David in Devon <BDonTJ@REMOVE.gmail.com> - 2019-04-06 09:52 +0100
Re: Unable to boot up a 15" 2008 MacBook Pro. nospam <nospam@nospam.invalid> - 2019-04-06 08:00 -0400
Re: Unable to boot up a 15" 2008 MacBook Pro. nospam <nospam@nospam.invalid> - 2019-04-06 08:00 -0400
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| From | David in Devon <BDonTJ@REMOVE.gmail.com> |
|---|---|
| Date | 2019-04-05 22:50 +0100 |
| Message-ID | <U4QpE.61916$0n2.40752@fx28.fr7> |
| In reply to | #1260 |
On 05/04/2019 21:04, danny burstein wrote: > [snippeth] > >>>> don't do that. without a battery, it will run significantly slower and >>>> there is also the risk of a sudden shutdown if there's a power glitch. >>> >>> Why would it run slower if it's on its main power connector? > >> Exactly why *I* asked nospam. > > this is, indeed, a real issue. Sometimes... > > The power draw as the drive starts spinning up might easily > be more than the transformer can provide. > > For argument's sake, let's just say the wall wart can > provide 50 watts. The basic draw of the unit might > be 35. Call it 45 when charging the battery. > > However, when the drives start up (and other items > with initial surges, too), they might be trying to > get 100 watts. Yeah, only for a couple of seconds, > or maybe just a fraction of one, but that's more > than the power cord will have at hand. > > The battery provides those extra electrons... This sounds plausible. Thank you. Perhaps a failing in early Apple laptops? I have no experience of an Apple laptop - just an iMac for the past 10 years and an iPad and iPhones for less time. D.
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| From | nospam <nospam@nospam.invalid> |
|---|---|
| Date | 2019-04-05 18:01 -0400 |
| Message-ID | <050420191801283399%nospam@nospam.invalid> |
| In reply to | #1280 |
In article <U4QpE.61916$0n2.40752@fx28.fr7>, David in Devon <BDonTJ@REMOVE.gmail.com> wrote: > >>>> don't do that. without a battery, it will run significantly slower and > >>>> there is also the risk of a sudden shutdown if there's a power glitch. > >>> > >>> Why would it run slower if it's on its main power connector? > > > >> Exactly why *I* asked nospam. > > > > this is, indeed, a real issue. Sometimes... > > > > The power draw as the drive starts spinning up might easily > > be more than the transformer can provide. > > > > For argument's sake, let's just say the wall wart can > > provide 50 watts. The basic draw of the unit might > > be 35. Call it 45 when charging the battery. > > > > However, when the drives start up (and other items > > with initial surges, too), they might be trying to > > get 100 watts. Yeah, only for a couple of seconds, > > or maybe just a fraction of one, but that's more > > than the power cord will have at hand. > > > > The battery provides those extra electrons... > > This sounds plausible. Thank you. > > Perhaps a failing in early Apple laptops? no, nor is it specific to apple. > I have no experience of an Apple laptop - just an iMac for the past 10 > years and an iPad and iPhones for less time. then stop pretending that you do and bashing others for having answers.
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| From | nospam <nospam@nospam.invalid> |
|---|---|
| Date | 2019-04-05 15:35 -0400 |
| Message-ID | <050420191535549194%nospam@nospam.invalid> |
| In reply to | #1255 |
In article <qYydnZ4WX4YxOjrBnZ2dnUU7-cmdnZ2d@giganews.com>, Alan Browne <bitbucket@blackhole.com> wrote: > >> > >> My client didn't want a new battery since he rarely uses it. It's very > >> old and slow. We kept its battery slot empty so it can boot up normally. > > > > don't do that. without a battery, it will run significantly slower and > > there is also the risk of a sudden shutdown if there's a power glitch. > > Why would it run slower if it's on its main power connector? because peak demands can potentially be above what the power adapter alone can source.
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| From | David in Devon <BDonTJ@REMOVE.gmail.com> |
|---|---|
| Date | 2019-04-05 20:40 +0100 |
| Message-ID | <TaOpE.846$Df6.572@fx30.fr7> |
| In reply to | #1257 |
On 05/04/2019 20:35, nospam wrote: > In article <qYydnZ4WX4YxOjrBnZ2dnUU7-cmdnZ2d@giganews.com>, Alan Browne > <bitbucket@blackhole.com> wrote: > >>>> >>>> My client didn't want a new battery since he rarely uses it. It's very >>>> old and slow. We kept its battery slot empty so it can boot up normally. >>> >>> don't do that. without a battery, it will run significantly slower and >>> there is also the risk of a sudden shutdown if there's a power glitch. >> >> Why would it run slower if it's on its main power connector? > > because peak demands can potentially be above what the power adapter > alone can source. Bullshit
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| From | danny burstein <dannyb@panix.com> |
|---|---|
| Date | 2019-04-05 20:05 +0000 |
| Message-ID | <q88cdc$rv$2@reader2.panix.com> |
| In reply to | #1259 |
In <TaOpE.846$Df6.572@fx30.fr7> David in Devon <BDonTJ@REMOVE.gmail.com> writes: >> because peak demands can potentially be above what the power adapter >> alone can source. >Bullshit Do you enjoy demonstrating just how dumb you are? -- _____________________________________________________ Knowledge may be power, but communications is the key dannyb@panix.com [to foil spammers, my address has been double rot-13 encoded]
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| From | Jolly Roger <jollyroger@pobox.com> |
|---|---|
| Date | 2019-04-05 20:06 +0000 |
| Message-ID | <ggpqp9Fh6i9U4@mid.individual.net> |
| In reply to | #1261 |
On 2019-04-05, danny burstein <dannyb@panix.com> wrote: > In <TaOpE.846$Df6.572@fx30.fr7> David in Devon <BDonTJ@REMOVE.gmail.com> writes: > >>> because peak demands can potentially be above what the power adapter >>> alone can source. > >>Bullshit > > Do you enjoy demonstrating just how dumb you are? It's his forte. -- E-mail sent to this address may be devoured by my ravenous SPAM filter. I often ignore posts from Google. Use a real news client instead. JR
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| From | Panthera Tigris Altaica <northentiger@outlook.com> |
|---|---|
| Date | 2019-04-05 16:17 -0400 |
| Message-ID | <q88d56$l71$2@dont-email.me> |
| In reply to | #1261 |
On 2019-04-05 16:05, danny burstein wrote: > In <TaOpE.846$Df6.572@fx30.fr7> David in Devon <BDonTJ@REMOVE.gmail.com> writes: > >>> because peak demands can potentially be above what the power adapter >>> alone can source. > >> Bullshit > > Do you enjoy demonstrating just how dumb you are? > He must, he does it so often.
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| From | Panthera Tigris Altaica <northentiger@outlook.com> |
|---|---|
| Date | 2019-04-05 16:14 -0400 |
| Message-ID | <q88cvf$l71$1@dont-email.me> |
| In reply to | #1259 |
On 2019-04-05 15:40, David in Devon wrote: > On 05/04/2019 20:35, nospam wrote: >> In article <qYydnZ4WX4YxOjrBnZ2dnUU7-cmdnZ2d@giganews.com>, Alan Browne >> <bitbucket@blackhole.com> wrote: >> >>>>> >>>>> My client didn't want a new battery since he rarely uses it. It's very >>>>> old and slow. We kept its battery slot empty so it can boot up >>>>> normally. >>>> >>>> don't do that. without a battery, it will run significantly slower and >>>> there is also the risk of a sudden shutdown if there's a power glitch. >>> >>> Why would it run slower if it's on its main power connector? >> >> because peak demands can potentially be above what the power adapter >> alone can source. > > Bullshit It depends on the charger. Apple made multiple chargers which would work with that model. The lower-end ones simply didn't provide the power necessary to run the CPU at max by themselves, they needed battery power as well. This meant that, yes, when running at full power, the laptops would slowly lose charge even when plugged in. Fortunately this was only for peak CPU usage, which was not usually prolonged, so the battery would start to charge again when the CPU usage went down. Or the user could just get a more powerful charger. Note that this still happens with some devices. If I use the standard iPhone charger with my iPhone 6 while I'm running something CPU intensive, such as Civilization 6, the iPhone will lose charge, slowly. If I use a more powerful charger, either a 3rd-party charger such as the Belkin I normally carry in my laptop bag, or the charger for an iPad, this does not happen. The iPad itself has been known to slowly lose charge when plugged into the USB port in my car, a Toyota, if I'm running intensive apps on it.
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| From | David in Devon <BDonTJ@REMOVE.gmail.com> |
|---|---|
| Date | 2019-04-05 22:19 +0100 |
| Message-ID | <kDPpE.1836$0E1.177@fx22.fr7> |
| In reply to | #1263 |
On 05/04/2019 21:14, Panthera Tigris Altaica wrote: > On 2019-04-05 15:40, David in Devon wrote: >> On 05/04/2019 20:35, nospam wrote: >>> In article <qYydnZ4WX4YxOjrBnZ2dnUU7-cmdnZ2d@giganews.com>, Alan Browne >>> <bitbucket@blackhole.com> wrote: >>> >>>>>> >>>>>> My client didn't want a new battery since he rarely uses it. It's >>>>>> very >>>>>> old and slow. We kept its battery slot empty so it can boot up >>>>>> normally. >>>>> >>>>> don't do that. without a battery, it will run significantly slower and >>>>> there is also the risk of a sudden shutdown if there's a power glitch. >>>> >>>> Why would it run slower if it's on its main power connector? >>> >>> because peak demands can potentially be above what the power adapter >>> alone can source. >> >> Bullshit > > It depends on the charger. Apple made multiple chargers which would work > with that model. The lower-end ones simply didn't provide the power > necessary to run the CPU at max by themselves, they needed battery power > as well. This meant that, yes, when running at full power, the laptops > would slowly lose charge even when plugged in. Fortunately this was only > for peak CPU usage, which was not usually prolonged, so the battery > would start to charge again when the CPU usage went down. Or the user > could just get a more powerful charger. > > Note that this still happens with some devices. If I use the standard > iPhone charger with my iPhone 6 while I'm running something CPU > intensive, such as Civilization 6, the iPhone will lose charge, slowly. > If I use a more powerful charger, either a 3rd-party charger such as the > Belkin I normally carry in my laptop bag, or the charger for an iPad, > this does not happen. The iPad itself has been known to slowly lose > charge when plugged into the USB port in my car, a Toyota, if I'm > running intensive apps on it. Thank you for your sensible answer. :-) I've never owned an Apple laptop so defer to your experience. I have used other types of laptop since the 1980's and have never had a problem running on a power supply with or without the battery being fitted. The inverter on my narrowboat isn't a pure sine wave device. I've had no problem so far, over a number of years, in charging our iPhones and iPad but am just a little concerned that I may have a problem with my brand new iPad Pro. Do you have sufficient knowledge to comment on this? -- David B. Devon, UK
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| From | nospam <nospam@nospam.invalid> |
|---|---|
| Date | 2019-04-05 17:37 -0400 |
| Message-ID | <050420191737518311%nospam@nospam.invalid> |
| In reply to | #1269 |
In article <kDPpE.1836$0E1.177@fx22.fr7>, David in Devon <BDonTJ@REMOVE.gmail.com> wrote: > >>>> > >>>> Why would it run slower if it's on its main power connector? > >>> > >>> because peak demands can potentially be above what the power adapter > >>> alone can source. > >> > >> Bullshit > > > > It depends on the charger. Apple made multiple chargers which would work > > with that model. The lower-end ones simply didn't provide the power > > necessary to run the CPU at max by themselves, they needed battery power > > as well. This meant that, yes, when running at full power, the laptops > > would slowly lose charge even when plugged in. Fortunately this was only > > for peak CPU usage, which was not usually prolonged, so the battery > > would start to charge again when the CPU usage went down. Or the user > > could just get a more powerful charger. > > > > Note that this still happens with some devices. If I use the standard > > iPhone charger with my iPhone 6 while I'm running something CPU > > intensive, such as Civilization 6, the iPhone will lose charge, slowly. > > If I use a more powerful charger, either a 3rd-party charger such as the > > Belkin I normally carry in my laptop bag, or the charger for an iPad, > > this does not happen. The iPad itself has been known to slowly lose > > charge when plugged into the USB port in my car, a Toyota, if I'm > > running intensive apps on it. > > Thank you for your sensible answer. :-) > > I've never owned an Apple laptop so defer to your experience. then why did you say bullshit? > I have > used other types of laptop since the 1980's and have never had a problem > running on a power supply with or without the battery being fitted. what other mystery unnamed laptops you supposedly used do is irrelevant and it's highly unlikely you know how to properly determine anything, but even if you didn't notice a speed decrease in your very limited experience, that doesn't mean all other laptops ever made will function in the same manner. > The inverter on my narrowboat isn't a pure sine wave device. I've had no > problem so far, over a number of years, in charging our iPhones and iPad > but am just a little concerned that I may have a problem with my brand > new iPad Pro. Do you have sufficient knowledge to comment on this? yes, i do. in fact, more than sufficient.
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| From | David in Devon <BDonTJ@REMOVE.gmail.com> |
|---|---|
| Date | 2019-04-05 22:44 +0100 |
| Message-ID | <N_PpE.847$Df6.299@fx30.fr7> |
| In reply to | #1275 |
On 05/04/2019 22:37, nospam wrote: > In article <kDPpE.1836$0E1.177@fx22.fr7>, David in Devon > <BDonTJ@REMOVE.gmail.com> wrote: > >>>>>> >>>>>> Why would it run slower if it's on its main power connector? >>>>> >>>>> because peak demands can potentially be above what the power adapter >>>>> alone can source. >>>> >>>> Bullshit >>> >>> It depends on the charger. Apple made multiple chargers which would work >>> with that model. The lower-end ones simply didn't provide the power >>> necessary to run the CPU at max by themselves, they needed battery power >>> as well. This meant that, yes, when running at full power, the laptops >>> would slowly lose charge even when plugged in. Fortunately this was only >>> for peak CPU usage, which was not usually prolonged, so the battery >>> would start to charge again when the CPU usage went down. Or the user >>> could just get a more powerful charger. >>> >>> Note that this still happens with some devices. If I use the standard >>> iPhone charger with my iPhone 6 while I'm running something CPU >>> intensive, such as Civilization 6, the iPhone will lose charge, slowly. >>> If I use a more powerful charger, either a 3rd-party charger such as the >>> Belkin I normally carry in my laptop bag, or the charger for an iPad, >>> this does not happen. The iPad itself has been known to slowly lose >>> charge when plugged into the USB port in my car, a Toyota, if I'm >>> running intensive apps on it. >> >> Thank you for your sensible answer. :-) >> >> I've never owned an Apple laptop so defer to your experience. > > then why did you say bullshit? Maybe because so many of your responses on Usenet newsgroups are totally unreliable. >> I have >> used other types of laptop since the 1980's and have never had a problem >> running on a power supply with or without the battery being fitted. > > what other mystery unnamed laptops you supposedly used do is irrelevant > and it's highly unlikely you know how to properly determine anything, > but even if you didn't notice a speed decrease in your very limited > experience, that doesn't mean all other laptops ever made will function > in the same manner. True >> The inverter on my narrowboat isn't a pure sine wave device. I've had no >> problem so far, over a number of years, in charging our iPhones and iPad >> but am just a little concerned that I may have a problem with my brand >> new iPad Pro. Do you have sufficient knowledge to comment on this? > > yes, i do. in fact, more than sufficient. You so often boast, but then fail to help others with their queries. I doubt you have ANY experience with the new iPad Pro. D.
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| From | nospam <nospam@nospam.invalid> |
|---|---|
| Date | 2019-04-05 17:50 -0400 |
| Message-ID | <050420191750283782%nospam@nospam.invalid> |
| In reply to | #1278 |
In article <N_PpE.847$Df6.299@fx30.fr7>, David in Devon <BDonTJ@REMOVE.gmail.com> wrote: > >>>>>> Why would it run slower if it's on its main power connector? > >>>>> > >>>>> because peak demands can potentially be above what the power adapter > >>>>> alone can source. > >>>> > >>>> Bullshit > >>> > >>> It depends on the charger. Apple made multiple chargers which would work > >>> with that model. The lower-end ones simply didn't provide the power > >>> necessary to run the CPU at max by themselves, they needed battery power > >>> as well. This meant that, yes, when running at full power, the laptops > >>> would slowly lose charge even when plugged in. Fortunately this was only > >>> for peak CPU usage, which was not usually prolonged, so the battery > >>> would start to charge again when the CPU usage went down. Or the user > >>> could just get a more powerful charger. > >>> > >>> Note that this still happens with some devices. If I use the standard > >>> iPhone charger with my iPhone 6 while I'm running something CPU > >>> intensive, such as Civilization 6, the iPhone will lose charge, slowly. > >>> If I use a more powerful charger, either a 3rd-party charger such as the > >>> Belkin I normally carry in my laptop bag, or the charger for an iPad, > >>> this does not happen. The iPad itself has been known to slowly lose > >>> charge when plugged into the USB port in my car, a Toyota, if I'm > >>> running intensive apps on it. > >> > >> Thank you for your sensible answer. :-) > >> > >> I've never owned an Apple laptop so defer to your experience. > > > > then why did you say bullshit? > > Maybe because so many of your responses on Usenet newsgroups are totally > unreliable. more accurately, because you're trolling. > >> I have > >> used other types of laptop since the 1980's and have never had a problem > >> running on a power supply with or without the battery being fitted. > > > > what other mystery unnamed laptops you supposedly used do is irrelevant > > and it's highly unlikely you know how to properly determine anything, > > but even if you didn't notice a speed decrease in your very limited > > experience, that doesn't mean all other laptops ever made will function > > in the same manner. > > True in other words, you're wrong yet again. > >> The inverter on my narrowboat isn't a pure sine wave device. I've had no > >> problem so far, over a number of years, in charging our iPhones and iPad > >> but am just a little concerned that I may have a problem with my brand > >> new iPad Pro. Do you have sufficient knowledge to comment on this? > > > > yes, i do. in fact, more than sufficient. > > You so often boast, but then fail to help others with their queries. wrong. i helped in this very thread. > I doubt you have ANY experience with the new iPad Pro. you have *no* idea what my experience is with any product and your question is not specific to an ipad pro anyway. in fact, it's clear that you don't understand what it is you're even asking.
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| From | David in Devon <BDonTJ@REMOVE.gmail.com> |
|---|---|
| Date | 2019-04-08 16:55 +0100 |
| Message-ID | <G9KqE.14874$YQ7.13982@fx03.fr7> |
| In reply to | #1279 |
On 05/04/2019 22:50, nospam wrote: > In article <N_PpE.847$Df6.299@fx30.fr7>, David in Devon > <BDonTJ@REMOVE.gmail.com> wrote: [....] >> You so often boast, but then fail to help others with their queries. > > wrong. i helped in this very thread. I don't think you've helped in ANY way. :-( >> I doubt you have ANY experience with the new iPad Pro. > > you have *no* idea what my experience is with any product and your > question is not specific to an ipad pro anyway. > > in fact, it's clear that you don't understand what it is you're even > asking. *Do* you have ANY hands-on experience with the new iMac Pro? D.
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| From | Alan Browne <bitbucket@blackhole.com> |
|---|---|
| Date | 2019-04-06 10:40 -0400 |
| Message-ID | <WNadncK4XKTCJzXBnZ2dnUU7-K2dnZ2d@giganews.com> |
| In reply to | #1257 |
On 2019-04-05 15:35, nospam wrote:
> In article <qYydnZ4WX4YxOjrBnZ2dnUU7-cmdnZ2d@giganews.com>, Alan Browne
> <bitbucket@blackhole.com> wrote:
>
>>>>
>>>> My client didn't want a new battery since he rarely uses it. It's very
>>>> old and slow. We kept its battery slot empty so it can boot up normally.
>>>
>>> don't do that. without a battery, it will run significantly slower and
>>> there is also the risk of a sudden shutdown if there's a power glitch.
>>
>> Why would it run slower if it's on its main power connector?
>
> because peak demands can potentially be above what the power adapter
> alone can source.
Few run their laptop at peak demand constantly. And if they did then
the battery would deplete.
So I wouldn't be too concerned with that configuration.
--
"2/3 of Donald Trump's wives were immigrants. Proof that we
need immigrants to do jobs that most Americans wouldn't do."
- unknown protester
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| From | nospam <nospam@nospam.invalid> |
|---|---|
| Date | 2019-04-06 11:29 -0400 |
| Message-ID | <060420191129213845%nospam@nospam.invalid> |
| In reply to | #1291 |
In article <WNadncK4XKTCJzXBnZ2dnUU7-K2dnZ2d@giganews.com>, Alan Browne <bitbucket@blackhole.com> wrote: > >>>> My client didn't want a new battery since he rarely uses it. It's very > >>>> old and slow. We kept its battery slot empty so it can boot up normally. > >>> > >>> don't do that. without a battery, it will run significantly slower and > >>> there is also the risk of a sudden shutdown if there's a power glitch. > >> > >> Why would it run slower if it's on its main power connector? > > > > because peak demands can potentially be above what the power adapter > > alone can source. > > Few run their laptop at peak demand constantly. And if they did then > the battery would deplete. constant isn't the problem. *any* peak demand could cause an unexpected shutdown, and to avoid that possibility, it runs slower. > So I wouldn't be too concerned with that configuration. there's no need to be concerned because it works perfectly fine, just slower.
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| From | Alan Browne <bitbucket@blackhole.com> |
|---|---|
| Date | 2019-04-06 15:13 -0400 |
| Message-ID | <1fWdnbZdaJ3CZzXBnZ2dnUU7-RHNnZ2d@giganews.com> |
| In reply to | #1292 |
On 2019-04-06 11:29, nospam wrote:
> In article <WNadncK4XKTCJzXBnZ2dnUU7-K2dnZ2d@giganews.com>, Alan Browne
> <bitbucket@blackhole.com> wrote:
>
>>>>>> My client didn't want a new battery since he rarely uses it. It's very
>>>>>> old and slow. We kept its battery slot empty so it can boot up normally.
>>>>>
>>>>> don't do that. without a battery, it will run significantly slower and
>>>>> there is also the risk of a sudden shutdown if there's a power glitch.
>>>>
>>>> Why would it run slower if it's on its main power connector?
>>>
>>> because peak demands can potentially be above what the power adapter
>>> alone can source.
>>
>> Few run their laptop at peak demand constantly. And if they did then
>> the battery would deplete.
>
> constant isn't the problem.
>
> *any* peak demand could cause an unexpected shutdown, and to avoid that
> possibility, it runs slower.
So there is no issue at all for the ordinary user.
Anyway I'm fascinated and going to try this on an MBA at work. Easy
enough to load it up, put the P/S on an ampere meter and compare the
power consumption reported by iStat. I just need to rig a connector for
the amp meter.
--
"2/3 of Donald Trump's wives were immigrants. Proof that we
need immigrants to do jobs that most Americans wouldn't do."
- unknown protester
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| From | Lewis <g.kreme@gmail.com.dontsendmecopies> |
|---|---|
| Date | 2019-04-06 19:57 +0000 |
| Message-ID | <slrnqai14v.24qs.g.kreme@rey.lan> |
| In reply to | #1293 |
In message <1fWdnbZdaJ3CZzXBnZ2dnUU7-RHNnZ2d@giganews.com> Alan Browne <bitbucket@blackhole.com> wrote: > On 2019-04-06 11:29, nospam wrote: >> In article <WNadncK4XKTCJzXBnZ2dnUU7-K2dnZ2d@giganews.com>, Alan Browne >> <bitbucket@blackhole.com> wrote: >> >>>>>>> My client didn't want a new battery since he rarely uses it. It's very >>>>>>> old and slow. We kept its battery slot empty so it can boot up normally. >>>>>> >>>>>> don't do that. without a battery, it will run significantly slower and >>>>>> there is also the risk of a sudden shutdown if there's a power glitch. >>>>> >>>>> Why would it run slower if it's on its main power connector? >>>> >>>> because peak demands can potentially be above what the power adapter >>>> alone can source. >>> >>> Few run their laptop at peak demand constantly. And if they did then >>> the battery would deplete. >> >> constant isn't the problem. >> >> *any* peak demand could cause an unexpected shutdown, and to avoid that >> possibility, it runs slower. > So there is no issue at all for the ordinary user. Untrue. The computer will hit peak demand at times for any user. > Anyway I'm fascinated and going to try this on an MBA at work. Easy > enough to load it up, put the P/S on an ampere meter and compare the > power consumption reported by iStat. I just need to rig a connector for > the amp meter. You need to run the test on a laptop with a removable battery that has been removed. Your proposed test will show nothing about the topic at hand. -- You can find any pattern you want to any level of precision you want If you ignore enough data.
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| From | Alan Browne <bitbucket@blackhole.com> |
|---|---|
| Date | 2019-04-06 17:08 -0400 |
| Message-ID | <Cqudnf-u-YGsiDTBnZ2dnUU7-QHNnZ2d@giganews.com> |
| In reply to | #1294 |
On 2019-04-06 15:57, Lewis wrote:
> In message <1fWdnbZdaJ3CZzXBnZ2dnUU7-RHNnZ2d@giganews.com> Alan Browne <bitbucket@blackhole.com> wrote:
>> On 2019-04-06 11:29, nospam wrote:
>>> In article <WNadncK4XKTCJzXBnZ2dnUU7-K2dnZ2d@giganews.com>, Alan Browne
>>> <bitbucket@blackhole.com> wrote:
>>>
>>>>>>>> My client didn't want a new battery since he rarely uses it. It's very
>>>>>>>> old and slow. We kept its battery slot empty so it can boot up normally.
>>>>>>>
>>>>>>> don't do that. without a battery, it will run significantly slower and
>>>>>>> there is also the risk of a sudden shutdown if there's a power glitch.
>>>>>>
>>>>>> Why would it run slower if it's on its main power connector?
>>>>>
>>>>> because peak demands can potentially be above what the power adapter
>>>>> alone can source.
>>>>
>>>> Few run their laptop at peak demand constantly. And if they did then
>>>> the battery would deplete.
>>>
>>> constant isn't the problem.
>>>
>>> *any* peak demand could cause an unexpected shutdown, and to avoid that
>>> possibility, it runs slower.
>
>> So there is no issue at all for the ordinary user.
>
> Untrue. The computer will hit peak demand at times for any user.
At which point it will just run slower than usual. So no issue, really.
>
>> Anyway I'm fascinated and going to try this on an MBA at work. Easy
>> enough to load it up, put the P/S on an ampere meter and compare the
>> power consumption reported by iStat. I just need to rig a connector for
>> the amp meter.
>
> You need to run the test on a laptop with a removable battery that has
> been removed. Your proposed test will show nothing about the topic at
> hand.
Of course it will. It's all in how one sets up the experiment.
If the computer is running full tilt and the external power supply can't
keep up then I should see the battery charge level fall. Keeping it at
(or near) peak for extended periods is easy enough using CPU efficient
apps like handbrake.
I'll also see the current max out on the external power supply while the
iStat data should show more total power being used than that delivered
by the external power supply.
Unfortunately I'm traveling a lot this week so I won't get to it until
after the 15th or so.
--
"2/3 of Donald Trump's wives were immigrants. Proof that we
need immigrants to do jobs that most Americans wouldn't do."
- unknown protester
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| From | nospam <nospam@nospam.invalid> |
|---|---|
| Date | 2019-04-07 21:05 -0400 |
| Message-ID | <070420192105056320%nospam@nospam.invalid> |
| In reply to | #1297 |
In article <Cqudnf-u-YGsiDTBnZ2dnUU7-QHNnZ2d@giganews.com>, Alan Browne <bitbucket@blackhole.com> wrote: > >>>>>> Why would it run slower if it's on its main power connector? > >>>>> > >>>>> because peak demands can potentially be above what the power adapter > >>>>> alone can source. > >>>> > >>>> Few run their laptop at peak demand constantly. And if they did then > >>>> the battery would deplete. > >>> > >>> constant isn't the problem. > >>> > >>> *any* peak demand could cause an unexpected shutdown, and to avoid that > >>> possibility, it runs slower. > > > >> So there is no issue at all for the ordinary user. > > > > Untrue. The computer will hit peak demand at times for any user. > > At which point it will just run slower than usual. So no issue, really. at that point, it's too late, so yes issue. > >> Anyway I'm fascinated and going to try this on an MBA at work. Easy > >> enough to load it up, put the P/S on an ampere meter and compare the > >> power consumption reported by iStat. I just need to rig a connector for > >> the amp meter. > > > > You need to run the test on a laptop with a removable battery that has > > been removed. Your proposed test will show nothing about the topic at > > hand. > > Of course it will. It's all in how one sets up the experiment. except that what you've described won't do that. > If the computer is running full tilt and the external power supply can't > keep up then I should see the battery charge level fall. Keeping it at > (or near) peak for extended periods is easy enough using CPU efficient > apps like handbrake. a single sudden spike won't cause a noticeable change in battery charge level. > I'll also see the current max out on the external power supply while the > iStat data should show more total power being used than that delivered > by the external power supply. you might see it max out, but that doesn't tell you what would happen with a spike, which you won't be able to invoke on demand. > Unfortunately I'm traveling a lot this week so I won't get to it until > after the 15th or so. best to use that time to rethink what you're testing.
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| From | nospam <nospam@nospam.invalid> |
|---|---|
| Date | 2019-04-06 15:58 -0400 |
| Message-ID | <060420191558131972%nospam@nospam.invalid> |
| In reply to | #1293 |
In article <1fWdnbZdaJ3CZzXBnZ2dnUU7-RHNnZ2d@giganews.com>, Alan Browne <bitbucket@blackhole.com> wrote: > >>>>>> My client didn't want a new battery since he rarely uses it. It's very > >>>>>> old and slow. We kept its battery slot empty so it can boot up > >>>>>> normally. > >>>>> > >>>>> don't do that. without a battery, it will run significantly slower and > >>>>> there is also the risk of a sudden shutdown if there's a power glitch. > >>>> > >>>> Why would it run slower if it's on its main power connector? > >>> > >>> because peak demands can potentially be above what the power adapter > >>> alone can source. > >> > >> Few run their laptop at peak demand constantly. And if they did then > >> the battery would deplete. > > > > constant isn't the problem. > > > > *any* peak demand could cause an unexpected shutdown, and to avoid that > > possibility, it runs slower. > > So there is no issue at all for the ordinary user. there absolutely is, which is why it's done, and not just apple either. > Anyway I'm fascinated and going to try this on an MBA at work. Easy > enough to load it up, put the P/S on an ampere meter and compare the > power consumption reported by iStat. I just need to rig a connector for > the amp meter. the proper test is a benchmark, with and without a battery. for the latter, you will need to disassemble it. fortunately, that's been done: <https://www.tomshardware.com/news/apple-macbook-pro-battery-benchmarks, 6643.html> Gearlog¹s own results show a decrease of 36 percent in processor speeds without a battery attached on their unibody MacBook Pro. Our own tests show a decrease of 50 percent when rendering with one CPU, a decrease of 52 percent in multiprocessor rendering, while the GPU suffered a 40 percent decrease in performance. as i said, it ain't just apple: <https://superuser.com/questions/344230/laptop-running-slower-without-ba ttery-attached> I have a Thinkpad T520 and I'm monitoring my CPU using CPU-Z. For some reason, when I detach the battery, the CPU only run till 800MHz. Whereas when I run using battery power, it goes up to 2.3GHz. I notice the difference in speed when I take the battery out. This is the reason why I investigated in the first place. ... This behavior is by design. Without the battery, the laptop's power management system cannot accommodate power spikes that occur when the CPU goes from a halted state to an active state. The laptop is simply not designed to operate without a battery. You might get away with it with some power supplies. But the laptop is simply not designed to work that way. The battery acts like a cushion to make up temporary power shortfalls. <https://forums.lenovo.com/t5/ThinkPad-L-R-and-SL-series/Hi-R60-running- slow-without-battery-on-AC-power-only/td-p/80565> What you're experiencing is perfectly normal. Your laptop was not designed to run at full power/speed without battery. ... Thinkpads are designed in such way that when the battery is detached or in some cases when the battery is not working, the speed of the CPU is throttled to prevent power shortage. The battery acts as source of power, when the peak power requirements from the laptop with 65 w power supply exceeds what the power adapter can supply.
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