[Bug 103370] `vblank_mode=0 DRI_PRIME=1 glxgears` will introduce GPU lock up on Intel Graphics [8086:5917] + AMD Graphics [1002:6665] (rev c3)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103370

--- Comment #37 from Robert Liu <tsunghanliu at gmail.com> ---
(In reply to Robert Liu from comment #36)
> 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.
By restricting max_sclk to 65000 and max_mclk to 80000, both radeon and amdgpu
do not have the issue.

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