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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [amdgpu] Screen flickering when using a 75Hz monitor paired with an RX 480 GPU"
href="https://bugs.freedesktop.org/show_bug.cgi?id=110199#c13">Comment # 13</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [amdgpu] Screen flickering when using a 75Hz monitor paired with an RX 480 GPU"
href="https://bugs.freedesktop.org/show_bug.cgi?id=110199">bug 110199</a>
from <span class="vcard"><a class="email" href="mailto:192k@protonmail.com" title="192k@protonmail.com">192k@protonmail.com</a>
</span></b>
<pre>I can confirm this issue exists on rx560
i have discovered a workaround,
if you copy the stock powerplaytable to a file with
cat /sys/class/drm/card0/device/pp_table > pptable
then load the stock pptable with
sudo bash -c 'echo pptable > /sys/class/drm/card0/device/pp_table'
the flickering goes away without having to lock the mclk to the highest state
it may also be related to <a class="bz_bug_link
bz_status_NEW "
title="NEW - pp_od_clk_voltage mV cap ignored"
href="show_bug.cgi?id=110347">https://bugs.freedesktop.org/show_bug.cgi?id=110347</a>
this bug.
by default at boot the voltage for the highest pstate is the maximum allowable
voltage(1150mv) not the powerplay defined voltage of 1025mv, all other pstates
are not effected
this is also corrected after reloading the pptable manually.</pre>
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