[Bug 97861] [amdgpu SI] purple line is visible on left side of the screen connected by HDMI

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97861

--- Comment #5 from Thomas Hume <aszarsha at gmail.com> ---
Same problem here with my HDMI screen. Everything works fine (GNOME Wayland
session and all) until I start an X server (not XWayland, actual X server from
a "GNOME on Xorg" session) at which point the screen goes black (X server is
mode-setting I'd imagine), and when it comes back on the purple line is
present.
Logging out of the Xorg session and back into a Wayland session does *not*
revert the problem; I haven't tried the xrandx trick yet.

The screen is indeed blurry (enough to make it unbearable to read any text with
subpixel positioning for more that a few minutes). It might comes from the
scaling of the output to the remaining space (screen space - purple line
space). Furthermore, any screenshot does not capture the line and it's only an
'on screen' thing.

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