[Bug 74800] intel-virtual-output shows different resolutions under certain conditions

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=74800

--- Comment #16 from Raul Dias <raul at dias.com.br> ---
It seems I talked too soon.

I found out more info about the behaviour.
It might be related to this particular display: LG Electronics L1753T

When using i-v-o with the display connected, but OFF, everything works fine as
expected.  There is no 1920 mode in VIRTUAL1.

"xrandr --output VIRTUAL1 --mode 1280x1024" works at first call.

When using i-v-o with the display ON, the 1920 is present.

"xrandr --output VIRTUAL1 --mode 1280x1024" will only work if called twice and
fast (maybe ~1s between calls).  In this test I called 7 paused times and the
last two fast enough to test this behaviour.

When I comment the xorg.conf.nvidia option: 
   Option "IgnoreDisplayDevices" "CRT,TV"

The display goes to VIRTUAL2 and it will always work independent of wether the
monitor is ON or OFF.

I am going to attach the logs for future referende and indexing.

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