[ltp] T22 ACPI Problems

[André Wyrwa]

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Daniel Maier wrote:
> Hello,
> 
> I am running 2.6.15 and Debian on a T22.
> The below described problem was there with all kernels from 2.6.12
> on, earlier kernels not tested.
> 
> Everything works fine until some magic point. Then the volume and
> ThinkPad Buttons stop sending any events through /dev/nvram. Also
> rmmod <any acpi related modul> hangs.
> 
> After a suspend to ram, also all ACPI events stop working. Fixing it
> is only possible with a reboot.
> 
> This behavior occurs very randomly, sometimes after hours, sometimes
> after days or even weeks. I believe there is some relation between
> plugging in the jack to the hifi, but there is only a time relation.
> 
> Has anyone any ideas, what to do or where to start searching?
> 
> Regards,
> Daniel.

I had a similar phenomena with OpenSUSE 10 and finally wrote down what i
thought made it work here:
http://www.thinkwiki.org/wiki/Installing_SUSE_10_on_a_ThinkPad_TransNote .

I also tried different module loading orders or compiling all ACPI stuff
into the kernel. Didn't really help. I'm not sure if the solution above
finally really helped.

André.

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