On Mon, 20 Sep 2010, Heinz Diehl wrote:

On 12.08.2010, Heinz Diehl wrote: 

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Could please those of you, who are able to reproduce the problem, verify
whether the patch below (completely untested) makes everything behave
again? Thanks.

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Yes, everything behaves again. Thanks Jiri.

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Seconded. Works good. Thanks for your support Jiri.

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Thirded! This fixes the warning here.

Unfortunately, I have to take up this problem a second time. 
I considered the issue fixed, and in fact it was using Jiris patch.

However, the same problem came back while testing 2.6.36-rc4 and the
following -git's. /var/log/warn shows the same warning as mentioned in
the first mail in this thread:

 Sep 20 08:18:42 liesel apcupsd[5436]: apcupsd FATAL ERROR in linux-usb.c at line 609 
 Cannot find UPS device -- For a link to detailed USB trouble
 shooting information, please see <http://www.apcupsd.com/support.html>.
 Sep 20 08:18:42 liesel apcupsd[5436]: apcupsd error shutdown completed

No additional oops this time, only the warning, and my UPS is no longer
working.

Jiris patch obviously didn't made it into 2.6.36-rc4, and it doesn't
apply nay longer either.

No, you're wrong.  The patch _is_ in 2.6.36-rc4, and that's the reason 
why it doesn't apply any longer.

The error you see must have a different cause.  Have you read this 
thread?

	http://marc.info/?t=128494644600005&r=1&w=2

Alan Stern