[Bug 107858] Screen resolution wrong after turning monitor off and on

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107858

--- Comment #7 from Lothar Paltins <lopa at mailbox.org> ---
But the client must know the possible resolutions and this information must
come from the X server and the driver.

I'm using the KDE5 desktop environment and I've attached the appropriate log
files. The dmesg output is the same before and after the monitor power cycle,
the other files have the suffix _good and _bad. Now there are lines with "get
vblank counter failed: Invalid argument" in the Xorg.0.log file, which I didn't
see previously. This all looks like a random problem, maybe the use of an
unititialized variable or an out of bounds array access.

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