[Bug 90047] Graphics unstable with missing letter on Intel HD Graphics 5500 gen5 if SNA enabled

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90047

--- Comment #8 from gdm.impulse at gmail.com ---
FWIW, I tested the driver as of commit 4fdd3a7 and was still seeing the same
issues.  Turns out if I run a glx program (e.g. compton), I can't reproduce the
issue.  I also use awesomewm which doesn't come with a compositing window
manager, however I noticed that I wasn't able to reproduce the issue with Unity
or Gnome which both do include compositing window managers.  The other thing I
noticed is that if I didn't use a compositing window manager but opened
glxgears after the screen corruption, the screen would be restored to normal.

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