I was affected too with Natty. Now I confirm, that this bug still exists
with Ubuntu Precise 12.04 beta 2. I tested it with a 32-bit LiveCD-iso
on a bootable USB stick.
When I power up the system, the fan on the graphics board starts at full
speed. Soon it slows down when the BIOS checks memory, harddrives ect.
When I suspend Ubuntu (standby S3) then all fans stop as expected. But
upon resume the graphics board fan starts and stays at full speed
forever. Seems that the BIOS sets some "dynamic fan speed" flag when
powered-up, but the radeon driver does not when system resumes.
My Ubuntu uses the opensource driver "radeon". The affected
xserver-xorg-video-ati has version 1:6.14.99~git20111219.aacbd629-0ubuntu2
My hardware is a HIS Radeon X850 Pro (AGP). "sudo lspci" shows:
04:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI R480
[Radeon X850Pro]
I'd be glad to help with further tests or infos!
** Changed in: xserver-xorg-video-ati (Ubuntu)
Status: Expired => Confirmed
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which is subscribed to xserver-xorg-video-ati in Ubuntu.
https://bugs.launchpad.net/bugs/787540
Title:
ATI card fan stays on full after resume from suspend
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