https://bugzilla.kernel.org/show_bug.cgi?id=27792
Summary: Fan speed freezes, and hotkeys quit working. Lenovo
Thinkpad L512
Product: ACPI
Version: 2.5
Kernel Version: 2.6.37
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: high
Priority: P1
Component: ACPICA-Core
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: No
Hi, I'm not sure whether I'm submitting this in the good category, my apologies
if it isnt.
Well I've noticed some strange issue a couple of weeks ago. In kernel revisions
lower as 2.6.37 I was noticing another bug (Bug 25542) that got fixed in
2.6.37.
So here comes the strange problem.
When I run linux for 1/2/3 hours (it's kinda variable the time), the fan keeps
turning stationary no matter what the temperature is, and the fn keys also stop
working. When the problem does not exist everything runs fine.
A reboot/kexec/powerdown-powerup with the plug kept in doesn't work, the
problem keeps existing after those actions. When it has occurred the only
solution is to turn it off, pull out the plug(I usually use it without the
battery in it), put it back in and boot up. When this is done everything's
working normally again, but it does happen again in 1/2/3 hours of
usage/idling.
When the problem exists, and I reboot(with the ac cable kept in) into a livecd
(ubuntu 10.10, 2.6.35-22) the problem keeps existing.
Reloading/unloading thinkpad_acpi also didn't have any effect. There also isn't
anything logged about it by the kernel.
Everything works fine on windows.
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