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Re: Bad combination of scanner and motherboard?

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On 12/29/2013 12:15 PM, Henrik Carlqvist wrote:
> On Sat, 28 Dec 2013 21:22:50 +0000, Peter Chant wrote:
>> Powered hub was no help.
>
> Do you know the specifications of the HUB? How many amperes is it capable
> of sending out on each port? Do you know how many ameres the canon
> scanner requires?

I'll have to see if the info is available.

>
> Maybe it would be possible to use one of those two to one USB cables that
> are used with some USB disks to get twice as much current as you get from
> only one USB port.

Hmm, have 2-1 cables for mini and micro USB but not for standard.  I'll 
have to get one.


>
> My guess is still that the scenner does not get enough current. It should
> not be a software issue if the scanner works with the same distributions
> on another motherboard. It should also not be a broken USB port if
> another epson scanner works in the same port.
>
> I just checked the specifications of the scanner, it is supposed to
> consume no more than 2.5W which equals 0.5A at 5V. This is exactly what a
> USB 2.0 port should be able to deliver. A USB 1.0 port will not be able to
> deliver that much current. A flaky motherboard or a motherboard connected
> to a flay PSU might not be able to give 0.5A on a USB 2.0 port.


It's a Gigabyte motherboard, so it ought to at least manage the USB 
spec.  My eee900 managed to drive it.

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Thread

Bad combination of scanner and motherboard? Peter Chant <pete@petezilla.co.uk> - 2013-12-28 12:03 +0000
  Re: Bad combination of scanner and motherboard? philo  <philo@privacy.net> - 2013-12-28 07:07 -0600
    Re: Bad combination of scanner and motherboard? Peter Chant <pete@petezilla.co.uk> - 2013-12-28 15:42 +0000
      Re: Bad combination of scanner and motherboard? philo  <philo@privacy.net> - 2013-12-28 10:18 -0600
        Re: Bad combination of scanner and motherboard? notbob <notbob@nothome.com> - 2013-12-28 16:47 +0000
          Re: Bad combination of scanner and motherboard? Peter Chant <pete@petezilla.co.uk> - 2013-12-28 21:22 +0000
            Re: Bad combination of scanner and motherboard? philo  <philo@privacy.net> - 2013-12-28 16:04 -0600
              Re: Bad combination of scanner and motherboard? Peter Chant <pete@petezilla.co.uk> - 2013-12-29 00:29 +0000
            Re: Bad combination of scanner and motherboard? Henrik Carlqvist <Henrik.Carlqvist@deadspam.com> - 2013-12-29 12:15 +0000
              Re: Bad combination of scanner and motherboard? Peter Chant <pete@petezilla.co.uk> - 2013-12-29 12:50 +0000
              Re: Bad combination of scanner and motherboard? Peter Chant <pete@petezilla.co.uk> - 2013-12-29 13:05 +0000
                Re: Bad combination of scanner and motherboard? Henrik Carlqvist <Henrik.Carlqvist@deadspam.com> - 2013-12-29 17:35 +0000
                Re: Bad combination of scanner and motherboard? Peter Chant <pete@petezilla.co.uk> - 2013-12-29 21:00 +0000
                Re: Bad combination of scanner and motherboard? philo  <philo@privacy.net> - 2013-12-29 15:02 -0600
                Re: Bad combination of scanner and motherboard? Henrik Carlqvist <Henrik.Carlqvist@deadspam.com> - 2013-12-30 00:18 +0000
                Re: Bad combination of scanner and motherboard? philo  <philo@privacy.net> - 2013-12-29 18:26 -0600
                Re: Bad combination of scanner and motherboard? Peter Chant <pete@petezilla.co.uk> - 2013-12-30 10:46 +0000
                Re: Bad combination of scanner and motherboard? Pascal Hambourg <boite-a-spam@plouf.fr.eu.org> - 2013-12-31 20:09 +0100
                Re: Bad combination of scanner and motherboard? Peter Chant <pete@petezilla.co.uk> - 2014-01-01 22:46 +0000
                Re: Bad combination of scanner and motherboard? Henrik Carlqvist <Henrik.Carlqvist@deadspam.com> - 2014-01-02 15:47 +0000
                Re: Bad combination of scanner and motherboard? Peter Chant <pete@petezilla.co.uk> - 2014-01-03 21:50 +0000
                Re: Bad combination of scanner and motherboard? margaretict@googlemail.com - 2014-01-29 02:25 -0800
  Re: Bad combination of scanner and motherboard? Allodoxaphobia <knock_yourself_out@example.net> - 2013-12-28 18:47 +0000
    Re: Bad combination of scanner and motherboard? Peter Chant <pete@petezilla.co.uk> - 2013-12-28 21:23 +0000

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