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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [drm:.r600_ring_test [radeon]] *ERROR* radeon: ring 0 test failed (scratch(0x8504)=0xCAFEDEAD)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99851#c53">Comment # 53</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [drm:.r600_ring_test [radeon]] *ERROR* radeon: ring 0 test failed (scratch(0x8504)=0xCAFEDEAD)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99851">bug 99851</a>
from <span class="vcard"><a class="email" href="mailto:erhard_f@mailbox.org" title="erhard_f@mailbox.org">erhard_f@mailbox.org</a>
</span></b>
<pre>Not necessarily. This bug here was introduced somewhere in the 4.11 kernel
development (see bisect), 4.12.x still affected. I don't have this problem with
kernel 4.10.x and 4.9.x.
The other <a class="bz_bug_link
bz_status_NEW "
title="NEW - [drm:.r600_ring_test [radeon]] *ERROR* radeon: ring 0 test failed (scratch(0x8504)=0xCAFEDEAD)"
href="show_bug.cgi?id=95015">bug #95015</a> is about 4.4.x kernel, though the error message is the
same. So maybe the two have a common cause, but that's only guesswork from my
side.</pre>
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