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<base href="https://bugs.freedesktop.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Skylake GPU hangs with kernel oops when 3D acceleration is used"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94529">94529</a>
</td>
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<th>Summary</th>
<td>Skylake GPU hangs with kernel oops when 3D acceleration is used
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/Intel
</td>
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Reporter</th>
<td>chais.z3r0@gmail.com
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=122273" name="attach_122273" title="Kernel Oops">attachment 122273</a> <a href="attachment.cgi?id=122273&action=edit" title="Kernel Oops">[details]</a></span>
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 <a href="https://wiki.archlinux.org/index.php/Intel_graphics">https://wiki.archlinux.org/index.php/Intel_graphics</a> 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.</pre>
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</p>
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