Comment 303 for bug 1041790

Chris, you referred me to this bug as I reported

Bug 90835 - [4.1-rc6] gpu hang: ecode 6:-1:0x00000000, Kicking stuck semaphore on render ring

I skimmed through it and it appears that there are some patches to test? But I am not sure which ones these are. Can you or someone else enlighten me?

Also I note that I still use

        Option "AccelMethod" "uxa"

and I have

martin@merkaba:~> cat /etc/modprobe.d/i915-kms.conf
options i915 modeset=1 i915_enable_rc6=7

thus maximum energy saving. But according to powertop it never enters the highest sleep state anyway.

I will remove the AccelMethod setting now and see whether it helps. If not, I downgrade to 4.1-rc4 for now, as issues have been at least much less frequent with it.

And its really that for me 4.1-rc6 makes things much *worse*. I am typing this after a clean reboot and already got the GPU hang again. It happens about every few minutes. Are you really sure this is the same GPU hang? I didn´t have this before 4.1 kernel?