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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Radeon HD 4570 set dpm state fails after suspend"
href="https://bugs.freedesktop.org/show_bug.cgi?id=76130#c16">Comment # 16</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Radeon HD 4570 set dpm state fails after suspend"
href="https://bugs.freedesktop.org/show_bug.cgi?id=76130">bug 76130</a>
from <span class="vcard"><a class="email" href="mailto:diamondaz+fdb@yandex.ru" title="Evgeny Grechnikov <diamondaz+fdb@yandex.ru>"> <span class="fn">Evgeny Grechnikov</span></a>
</span></b>
<pre>It seems that the timeout is too small. A dirty fix replacing
rdev->usec_timeout with 1000000 in rv770_send_msg_to_smc
(drivers/gpu/drm/radeon/rv770_smc.c) works for me (both *ERROR*s in kernel log
disappear, performance returns to normal).</pre>
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