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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - `vblank_mode=0 DRI_PRIME=1 glxgears` will introduce GPU lock up on Intel Graphics [8086:5917] + AMD Graphics [1002:6665] (rev c3)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103370#c37">Comment # 37</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - `vblank_mode=0 DRI_PRIME=1 glxgears` will introduce GPU lock up on Intel Graphics [8086:5917] + AMD Graphics [1002:6665] (rev c3)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103370">bug 103370</a>
from <span class="vcard"><a class="email" href="mailto:tsunghanliu@gmail.com" title="Robert Liu <tsunghanliu@gmail.com>"> <span class="fn">Robert Liu</span></a>
</span></b>
<pre>(In reply to Robert Liu from <a href="show_bug.cgi?id=103370#c36">comment #36</a>)
<span class="quote">> BTW, with 4.13.0-16-generic, I change the max_sclk in drm/radeon/si_dpm.c
> (what we did with Ubuntu kernel 4.4.0-101-generic) from 75000 to 65000, but
> still met the hang issue.</span >
By restricting max_sclk to 65000 and max_mclk to 80000, both radeon and amdgpu
do not have the issue.</pre>
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