Created attachment 122273 [details] Kernel Oops For quite some time now I've been struggling to get stable hardware acceleration from my Core i5 6600K. I'm running Arch on an MSI Z170A GAMING M7 mainboard. Whenever I try to use hardware acceleration on the IGD (chromium, glxgears) the display will just freeze. I can still log in remotely and the machine works fine otherwise. dmesg will contain an oops like the one attaached. I had this working briefly with 4.4.3, but after the first hang downgrading wouldn't help either. My current /proc/cmdline: initrd=/initramfs-linux.img initrd=/intel-ucode.img rw <luks-setup> root=/dev/mapper/e1 rootflags=subvol=root,device=/dev/mapper/e1,device=/dev/mapper/e2,compress=lzo intel_iommu=on intel_iommu=igfx_off i915.preliminary_hw_support=1 The preliminary_hw_support is what made things work with 4.4.3. As suggested by https://wiki.archlinux.org/index.php/Intel_graphics I tried booting with i915.enable_rc6=0 but without success. Also i915.enable_execlists=0 or switching to uxa acceleration didn't help. So far the only thing that reliably lets me use the machine is disabling DRI. But since that forces me to move the mouse for the screen to refresh at all that's not really an option. Watching movies while constantly jiggling the mouse is more than just tedious. I can't find any related errors in the Xorg log.
Linux 4.6 should be much more stable than 4.4. Could you try it?
(In reply to chais.z3r0 from comment #0) > Created attachment 122273 [details] > Kernel Oops > > For quite some time now I've been struggling to get stable hardware > acceleration from my Core i5 6600K. I'm running Arch on an MSI Z170A GAMING > M7 mainboard. > Whenever I try to use hardware acceleration on the IGD (chromium, glxgears) > the display will just freeze. I can still log in remotely and the machine > works fine otherwise. dmesg will contain an oops like the one attaached. > > I had this working briefly with 4.4.3, but after the first hang downgrading > wouldn't help either. > My current /proc/cmdline: > > initrd=/initramfs-linux.img initrd=/intel-ucode.img rw <luks-setup> > root=/dev/mapper/e1 > rootflags=subvol=root,device=/dev/mapper/e1,device=/dev/mapper/e2, > compress=lzo intel_iommu=on intel_iommu=igfx_off > i915.preliminary_hw_support=1 > > The preliminary_hw_support is what made things work with 4.4.3. > > As suggested by https://wiki.archlinux.org/index.php/Intel_graphics I tried > booting with i915.enable_rc6=0 but without success. Also > i915.enable_execlists=0 or switching to uxa acceleration didn't help. So far > the only thing that reliably lets me use the machine is disabling DRI. But > since that forces me to move the mouse for the screen to refresh at all > that's not really an option. Watching movies while constantly jiggling the > mouse is more than just tedious. > I can't find any related errors in the Xorg log. Can you upgrade your kernel and confirm if this is still occurring or not. There are skl workarounds that could benefits to you.
Timeout. Assuming that it is fixed by now. If this is not the case, please re-test with latest kernel & Mesa to see if this issue is still occurring since there were improvements pushed in kernel and Mesa that will benefit to your system.
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