[Bug 90741] Radeon: System pauses on TAHITI

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=90741

--- Comment #4 from Gustaw Smolarczyk <wielkiegie at gmail.com> ---
There seems to be no substantial difference in 3.19-rc2,
39e7f6f84b3a3aa4520504473f2e2bac1f949ffa or
472db7ab3093bf2a2999f6b5aa64a030466d6f92.

The only thing (that may be subjective) is that there seems to be a bit less
pauses in final 3.18 and later. (did not bisect that, may be totally
subjective)

Also of importance can be that I am using 2 GPUs (discrete AMD TAHITI and
integrated Intel gen7 (IVB)) in randr 1.4 offloading configuration:

xrandr --setprovideroutputsource Intel radeon
xrandr --output HDMI2 --mode 1280x1024 --rate 60 --right-of DVI-0

Where:
  DVI-0 is my main monitor and is connected to TAHITI
  HDMI2 is my secondary monitor and is connected to IVB
  The OpenGL window is on the main monitor

If that may be the source of these problems, I could disable the second monitor
along with the iGPU in order to test that hypothesis.

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