[Bug 112008] eDP -> Dual Channel LVDS bridge unable to accept any modelines: Corrupt display!

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=112008

--- Comment #5 from Babblebones at gmail.com ---
(In reply to Alex Deucher from comment #4)
> Can you use git bisect the issue and find the exact commit that broke it or
> narrow down when the regression happened?  E.g., working in 4.17-rc3 and
> broken in 4.17-rc4?

I have two commits that break my EDID reading and cause the exact same issue so
far.

bisected the mainline to try and find the issue, trailed into your drm-next
git...

The first commit I found that broke my EDID read:
https://cgit.freedesktop.org/~agd5f/linux/commit/?h=amd-staging-drm-next&id=8a61bc085ffab3071c59efcbeff4044c034e7490
Was later reverted.

Followed more commits after this one down a branch and into here...
https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?h=x86-urgent-for-linus&id=bd4caed47a19f25fe8674344ea06d469c27ac314

Surprisingly, swapping out the memory allocs actually breaks the EDID read in
this commit/ branch too. I know for a fact Ubuntu's old kernel 4.18 reverted
this specific and the treewide memory allocation change, which worked!? I
stopped about here, my head was starting to spin as to why THAT would do
anything.

I am ready and able to fork over any binary/parameter/debug dumps to help solve
this.

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