[Bug 99275] Kernel 4.9: amdgpu regression; gui flickers; amd radeon rx 460

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=99275

--- Comment #27 from Michel Dänzer <michel@daenzer.net> ---
(In reply to Reimar Imhof from comment #26)
> Together with comment #24 there is a render bug in kernel 4.8 that shows up
> at 100% cpu load.
> With kernel 4.9 this same bug shows up at 0% / idle cpu load.
> 
> With 
> af79ad2b1f337a00aa150b993635b10bc68dc842
> Merge branch 'sched-core-for-linus' of
> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
> it changed from "bug shows at 100% load" to "bug shows at 0% load". And the
> change is something about the scheduler.
> To me this seems likely.

Not really. That commit is a pure merge commit, which makes it unlikely that it
behaves any differently from either of its parent commits. So git bisect should
have identified one of its ancestor commits instead. The fact that it
identified a pure merge commit indicates that the result is incorrect, most
likely because at least one commit along the way was incorrectly classified as
good (or bad).

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