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<body><span class="vcard"><a class="email" href="mailto:linux@bernd-steinhauser.de" title="Bernd Steinhauser <linux@bernd-steinhauser.de>"> <span class="fn">Bernd Steinhauser</span></a>
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<a class="bz_bug_link
bz_status_NEW "
title="NEW - xorg black screen after monitor power off, AMD r9 270X, aoc u2868pqu, displayport"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90987">bug 90987</a>
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<td>linux@bernd-steinhauser.de
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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - xorg black screen after monitor power off, AMD r9 270X, aoc u2868pqu, displayport"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90987#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - xorg black screen after monitor power off, AMD r9 270X, aoc u2868pqu, displayport"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90987">bug 90987</a>
from <span class="vcard"><a class="email" href="mailto:linux@bernd-steinhauser.de" title="Bernd Steinhauser <linux@bernd-steinhauser.de>"> <span class="fn">Bernd Steinhauser</span></a>
</span></b>
<pre>Can confirm, I see this, too:
kernel: [drm:radeon_dp_link_train] *ERROR* displayport link status failed
kernel: [drm:radeon_dp_link_train] *ERROR* clock recovery failed
kernel: [drm:radeon_dp_link_train] *ERROR* displayport link status failed
kernel: [drm:radeon_dp_link_train] *ERROR* clock recovery failed
The screen is an Eizo EV2455. GPU is an AMD Kaveri on Linux 4.4.0.
What I noticed is, that I only get this, if I set
Option "TearFree" "Off"
and maybe (didn't test explicitely, but it was set at the time):
Option "DRI" "3"</pre>
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