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Old 09-10-2008, 12:32 PM
Juergen Pfennig
 
Default Bug#469693: Turned out to be a topology problem

Hi,
the problem can be avoided by connecting the keyboard/mouse dongle directly
(without an extra hub). The card-reader itself works fine and causes no extra
problems. Occasional USB-stick problems are gone. Summary:

- If the cherry-marlin keyboard/mouse usb dongle is connected via a hub the
USB stack becomes instable and will hang after a while.

- If the same dongle is connected directly to the mobo all problems are gone.

I still consider this as a serious bug because with linux the whole USB stack
hangs while Windows 2003 can recover this problem (the mouse hangs only for a
second). I tried a different hub with no effect, but I did not try a
different keyboard.

Jürgen




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Old 11-07-2008, 07:01 PM
Moritz Muehlenhoff
 
Default Bug#469693: Turned out to be a topology problem

On Wed, Sep 10, 2008 at 02:32:58PM +0200, Juergen Pfennig wrote:
> Hi,
> the problem can be avoided by connecting the keyboard/mouse dongle directly
> (without an extra hub). The card-reader itself works fine and causes no extra
> problems. Occasional USB-stick problems are gone. Summary:
>
> - If the cherry-marlin keyboard/mouse usb dongle is connected via a hub the
> USB stack becomes instable and will hang after a while.
>
> - If the same dongle is connected directly to the mobo all problems are gone.
>
> I still consider this as a serious bug because with linux the whole USB stack
> hangs while Windows 2003 can recover this problem (the mouse hangs only for a
> second). I tried a different hub with no effect, but I did not try a
> different keyboard.

Could you file a bug report on this at bugzilla.kernel.org and post the bug
number to this bug report?

Cheers,
Moritz



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Old 11-13-2008, 09:41 AM
"Dr. Jürgen Pfennig"
 
Default Bug#469693: Turned out to be a topology problem

On Fri 07.11.2008 21:01:02 Moritz Muehlenhoff wrote:
> Could you file a bug report on this at bugzilla.kernel.org and post the bug
> number to this bug report?

Sorry, it would be too expensive to make a high quality upstream report. I
suggest to close the current bug, 2.6.26 is outdated anyhow and there is a
work-around. The only real and relevant message behind the problem is just:
For some possibly broken USB hardware Win (2003) possibly does better error
recovery.

Thanks, Jürgen




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