[drm: __gen6_gt_force_wake_mt_get] *ERROR FORCEWAKE* ThinkPad T430

btby · 2012-11-03 03:17:11

On a Thinkpad T430 / Intel HD4000 graphics, using UEFI boot / GRUB2 I get [drm:__gen6_gt_force_wake_mt_get] *ERROR FORCEWAKE* right after the boot process is finished and before login: is displayed -- that's when I added grub.efi to the list of efibootmgr entries.

If I use UEFI Shell (from USB installation medium) and launch grub.efi manually, I do not get the error above -- what could be the reason for the problem not manifesting when using UEFI shell?

Sorry if the wrong subforum, something tells me it might be kernel-related though.

Last edited by btby (2012-11-03 03:18:50)

hunterthomson · 2012-11-03 08:51:00

On my Thinkpad X230 / Intel HD4000 graphics, using MBR boot / GRUB2

I get the same error. The problem was introduced in kernel 3.6

I have not gotten around to fixing the problem. However, I have not seen any problems other then the error. Basicaly, it is a problem that requires a kernel patch.

Here is a link to a problem like this from a long time ago
http://patchwork.ozlabs.org/patch/126911/

My plan is to just wait until kernel 3.7 and hope that it is fixed upstream.

Last edited by hunterthomson (2012-11-03 09:01:31)

dront78 · 2013-02-26 06:07:29

this happens to me in 3.7 on toshiba laptop with intel hd4000 graphics

ilprincipe · 2013-03-16 00:21:04

happens to me as well with 3.7 and similar specs as above. Machine is a new Thinkpad X230 / Intel HD4000 graphics, MBR boot / GRUB.

The error message I get is [drm:__gen6_gt_force_wake_mt_get] *Error* Timed out waiting for forcewake old ack to clear.

Last edited by ilprincipe (2013-03-16 00:51:01)

WonderWoofy · 2013-03-16 02:45:42

Hey, this just made me realize that in 3.8 it is gone! (Thinkpad E430 / Intel HD4000)

hunterthomson · 2013-03-17 07:29:57

WonderWoofy wrote:

Hey, this just made me realize that in 3.8 it is gone! (Thinkpad E430 / Intel HD4000)

Yes it is gone now. Good stuff!

Arch Linux

#1 2012-11-03 03:17:11