ACPI, USB, and the tangled web

Anish Mistry mistry.7 at osu.edu
Thu Oct 16 18:51:57 PDT 2003


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First off, if you've been following my dabbling in fixing the USB resume 
problem on my laptop you know that I have been plauged by the infamous 
restart on second suspend with a usb device being accessed during the second 
suspend (ie. wiggling mouse).  Yesterday after finally updating to a current 
that boots my system after a couple of weeks without it I suspended the 
system and resumed it to check some ACPI issues had been fixed, but that's 
for another time. After resume I realized I needed my mouse, so I plugged it 
in, dynamically loaded the kernel module and the mouse worked (normal/
previous).  Then I suspend the laptop and was wiggling the mouse while it was 
suspending (bad habit from testing) and the system REBOOTED, and my patches 
weren't even applied!  Strangly enough I had never actually tested this 
situation before, so I had assumed it was my code that was the problem.  
There seems to be some ACPI problem, since I just tested the same procedure 
on with ACPI disabled and there was no reboot.
 http://am-productions.biz/debug/acpidump.txt
 http://am-productions.biz/debug/littleguy.dsdt
 http://am-productions.biz/debug/littleguy.asl
 http://am-productions.biz/debug/dmesg.txt

dmesg attached too.
- -- 
Anish Mistry
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