[Bug 107784] [AMD tahiti XT] displayport broken

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107784

--- Comment #3 from Sylvain BERTRAND <sylvain.bertrand at gmail.com> ---
On Mon, Sep 03, 2018 at 09:17:30AM +0000, bugzilla-daemon at freedesktop.org
wrote:
> https://bugs.freedesktop.org/show_bug.cgi?id=107784
> 
> --- Comment #2 from Michel Dänzer <michel at daenzer.net> ---
> Can you bisect?

I don't think it is reasonable because something bad happens between the 4.18
to 4.19 jump, then I would have to bisect on thousands of commits.
Additionnaly, I had to remove my git repo of 4.18 and clone again 4.19 because
git was unable to perform the pull, even with reset and force (I probably don't
know some git magic here): lost the last working 4.18 commit.

I would need to know what drm/amdgpu related commits where added from
4.18->4.19, the person who did this has this knowledge.

I'll try to fool around with git to see if I can manage something in the mean
time (with dates and targetting drm/amdgpu directories).

> P.S. Please enable CONFIG_UNWINDER_ORC in your kernel build, to make the
> backtraces in dmesg more useful.

ORC breaks linux build. Only guess compile (actually kbuild and kconfig are
quite broken in this 4.19), but it's an optimized build without symbols.

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