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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - AMDGPU - Can't even get Xorg to start - Kernel driver hangs with ring buffer timeout on ARM64"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108625#c11">Comment # 11</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - AMDGPU - Can't even get Xorg to start - Kernel driver hangs with ring buffer timeout on ARM64"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108625">bug 108625</a>
from <span class="vcard"><a class="email" href="mailto:alexdeucher@gmail.com" title="Alex Deucher <alexdeucher@gmail.com>"> <span class="fn">Alex Deucher</span></a>
</span></b>
<pre>Does this patch help?
<a href="https://patchwork.freedesktop.org/patch/259364/">https://patchwork.freedesktop.org/patch/259364/</a>
Does ARM support write combining? The driver uses it pretty extensively. You
might try disabling GTT_USWC (uncached write combined) support in the kernel
driver and just falling back to cached memory.</pre>
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