Public bug reported:
Binary package hint: xserver-xorg-video-intel
Running xrandr with no parameters to get a list of valid resolutions (or
indeed running a program like totem, or even totem's mozilla plugin),
the external VGA monitor is momentarilly blanked out. After a moment or
so, the screen is restored with no changes. My monitor however seems to
take its time adjusting to this, and about 5 seconds later reappears
with the "analog signal detected" on-screen display on for a moment.
This is precisely the same symptom the monitor exhibits by being
momentarilly unplugged from the VGA output and plugged back in.
This is on a Intel GMA945:
00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML
Express Integrated Graphics Controller (rev 03)
with xserver-xorg-video-intel 2:2.1.1-0ubuntu3 from ubuntu gutsy.
The built-in LVDS laptop screen does not appear to be affected.
** Affects: xserver-xorg-video-intel (Ubuntu)
Importance: Undecided
Status: New
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xrandr causes temporary blanking of external output
https://bugs.launchpad.net/bugs/147073
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