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<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - Radeonsi on Grenada cards (r9 390) exceptionally unstable and poorly performing"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91880#c105">Comment # 105</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - Radeonsi on Grenada cards (r9 390) exceptionally unstable and poorly performing"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91880">bug 91880</a>
from <span class="vcard"><a class="email" href="mailto:0xe2.0x9a.0x9b@gmail.com" title="Jan Ziak <0xe2.0x9a.0x9b@gmail.com>"> <span class="fn">Jan Ziak</span></a>
</span></b>
<pre>(In reply to Ernst Sjöstrand from <a href="show_bug.cgi?id=91880#c104">comment #104</a>)
<span class="quote">> <a href="https://patchwork.freedesktop.org/series/8116/">https://patchwork.freedesktop.org/series/8116/</a></span >
GPU: R9 390
GPU manufacturer: Gigabyte
Kernel: 4.5.5
Kernel module: radeon.ko
I applied the kernel patches and let Metro Last Light benchmark run for about
an hour with DPM enabled while I went shopping.
Before the patch: The benchmark would lock the GPU after a while
After the patch: Running OK for about an hour
I checked that 'new_smc' variable in radeon/cik.c gets set to 1.
----
Remaining issues on R9 390 after the patch:
Heavy screen flickering, not capturable on a screenshot. It is related to mclk
transitions. Forcing mclk=1.5GHz, and letting sclk be controlled by DPM,
removes the flickering.
I created a new bugzilla entry related to the flickering:
<a class="bz_bug_link
bz_status_NEW "
title="NEW - Heavy screen flickering in OpenGL apps on R9 390"
href="show_bug.cgi?id=96326">http://bugs.freedesktop.org/show_bug.cgi?id=96326</a>
----
GPU lockup in <a class="bz_bug_link
bz_status_NEW "
title="NEW - Unigine Tropics freeze-crashes R390X"
href="show_bug.cgi?id=92302">http://bugs.freedesktop.org/show_bug.cgi?id=92302</a> might have the
same cause as this issue.</pre>
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