[Bug 107503] Native screen resolution not working correctly over HDMI LSPCON (i915)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107503

--- Comment #7 from Nicholas Stommel <nicholas.stommel at gmail.com> ---
Fredrik made a good point about why we might be having difficulties reproducing
the bug with the drm.debug=0x1e parameter:

(In reply to Hector Martin from comment #21)
> If the issue is timing-related (which is quite likely given the randomness
> and the error message associated with it) then it's quite possible that
> enabling additional debugging might slow things down enough to stop it from
> happening.

This very well might be a timing related bug, as the drm.debug=0x1e parameter
writes hundreds of lines of feedback to the kernel log very quickly. I can
confirm this bug is very much indeed still a problem. I have posted my dmesg
sans the debugging parameter as well as the output of xrandr --verbose from a
good and bad boot. The bug is *very* reproducible without adding any extra
kernel parameters on Fedora 28 and Ubuntu 18.04. I will do my best in
attempting to find at which point the bug started happening,

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