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Message #33162
[Bug 432334] [NEW] Displaystate not remebered after suspend/resume (KMS)
You have been subscribed to a public bug:
In my Samsung Q45 with Intel GM965 graphics I encounter the following
problem when using KMS:
After a suspend/resume cycle the internal LVDS always gets enabled,
whether it was on before or not.
State before suspend/resume: LVDS: off / VGA: 1600x1200
State after resuming from suspend: LVDS: 1280x800 / VGA: 1600x1200
"xrandr --query" reports that the LVDS is off and it is not possible to
turn it off by issuing "xrandr --output LVDS --off"
To finally turn the LVDS off it needs to be "enabled" it first by using "xrandr ... --auto".
Afterwards it is possible to really turn it off.
Expected behavior:
- LVDS stays off after resume when it was off before
Sidenote:
If the displays are configured the other way round (VGA off/LVDS on) a suspend/resume cycle does not enable the VGA output.
** Affects: xserver-xorg-video-intel (Ubuntu)
Importance: Undecided
Status: New
** Tags: kms resume suspend
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Displaystate not remebered after suspend/resume (KMS)
https://bugs.launchpad.net/bugs/432334
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