Comment # 99
on bug 110674
from Tom B
Created attachment 145062 [details]
a list of commits 5.0.13 - 5.1.0
Attached is a list of all amdgpu and powerplay commits from 5.0.13 - 5.1.0.
I have tried reverting the following which looked most likely culprits:
919a94d8101ebc29868940b580fe9e9811b7dc86 drm/amdgpu: fix CPDMA hang in PRT mode
for VEGA20
f7b1844bacecca96dd8d813675e4d8adec02cd66 drm/amdgpu: Update gc golden setting
for vega family
d25689760b747287c6ca03cfe0729da63e0717f4 drm/amdgpu/display:
drm/amdgpu/display: Keep malloc ref to MST port -- A change to the way
displayport connectors are handled, looked promising.
db64a2f43c1bc22c5ff2d22606000b8c3587d0ec drm/amd/powerplay: fix possible hang
with 3+ 4K monitors
I also looked at that last one in detail as it seems very close to this bug.
Nothing in the code looks for 3+ monitors or even 4k. It only actually looks
for > 1 monitor.
Although it's based on disable_mclk_switching, I also tried forcing
disable_fclk_switching to true and false, neither had any affect. The result is
that mclk would be calculated based on screens but fclk would be forced on/off.
It didn't help but I can't help think that this commit is a little too close
to this issue to be irrelevant.
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