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Re: Bad combination of scanner and motherboard?

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On 01/02/2014 03:47 PM, Henrik Carlqvist wrote:
> On Wed, 01 Jan 2014 22:46:19 +0000, Peter Chant wrote:
>> Either way, I've tried a Y cable on the PC to give more power that way -
>> to no avail.  Did not try it with the hub.  Suspect it is a
>> firmware/chipset clash somewhere.
> 
> Too bad. I haven't heard of any such clash before, but I have seen some 
> USB 3 ports being capable of totally hanging the machine when used.
> 
> Sorry that we were not able to solve your problem.
> 

Thank you for your time, it is appreciated.  I only posted here when I
though I'd exchausted all avenues.

> One final test which will not solve your problem: Does the scanner work 
> when connected to the computer where it has previously worked, but with 
> the USB hub between the computer and the scanner?
> 

Not tried that.  Scanner currently at parents - I'll pick it up soonish
as it is doing no good there.

> If not, it might instead of a current problem be a voltage problem, but 
> that problem cannot be solved with a Y-cable. Maybe it would be possible 
> to solve with another hub or another power supply for the hub.
> 

Hmm.  Only have the one powered hub!  If it is a voltage issue seems odd
to have bad luck with both the PC and the hub.  However, trying the hub
with a PC that it has worked with might chase down any hub issues.

> If the scanner still works on the working computer with the hub connected 
> it might be a chipset clash as you say, or possibly some software 
> difference between the machines which has been overlooked.

If not firmware perhaps UDEV, it seems not to be giving correct
permissions to the device via /dev/bus/???/??? but then root is having
no more luck with scanimage -L.  I'mm going to look through my bit box
to see if I have any spare PCI/usb cards to see if that affects
anything.  Not sure whether I have any spare or whether new PC as any
standard PCI slots!

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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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