Public bug reported:
Binary package hint: gnome-screensaver
To reproduce, use two monitors.
1. Use xrandr to turn 1 ON and 2 OFF
2. go to screensaver/lock screen
3. Use xrandr to turn 1 OFF and 2 ON (i have a udev rule for this, a keyboard
shortcut would also work)
4. The lock dialog can not be seen. Typing in the password blindly does not
help. Using xrandr to turn 1 ON and 2 OFF again does not change this.
Switching to a VT and killing gnome-screensaver is the only way to log in.
This may be a duplicate from another bug, if someone did not realize xrandr
interaction was causing the problem.
my udev rule:
$ cat /etc/udev/rules.d/98-video.rules
SUBSYSTEM=="drm", \
ACTION=="change", \
DEVNAME=="/dev/dri/card0", \
RUN+="/usr/local/bin/toggle-display :0"
and the helper script:
$ cat /usr/local/bin/toggle-display
#!/bin/sh
test -z "$1" || export DISPLAY=$1
if xrandr|grep "VGA1 connected" 2>&1 >/dev/null; then
ON=VGA1
OFF=LVDS1
else
ON=LVDS1
OFF=VGA1
fi
xrandr --output $ON --auto --primary --output $OFF --off
** Affects: gnome-screensaver (Ubuntu)
Importance: Undecided
Status: New
--
lockup when xrandr changes display
https://bugs.launchpad.net/bugs/611874
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