Ubuntu
linux package

  1. Bug #1813663
  2. Comment #29

Comment 29 for bug 1813663

Revision history for this message
Jan (mail-ubuntu-x) wrote :

I'm affected with this issue on a Thinkpad T460P. My problem is slightly different, though. I boot up my laptop while it is already docked, two external screens are connected to the docking station. The display manager initializes all three screens (laptop + both external screens) and LXDE/Openbox combines them into one virtual desktop over all three screens. When I try to switch off the laptop's screen via the command

xrandr --output eDP-1 --off --output HDMI-3 --off --output HDMI-2 --off --output HDMI-1 --off --output DP-3-1 --mode 1920x1080 --pos 1920x0 --rotate normal --output DP-3-3 --off --output DP-3-2 --primary --mode 1920x1080 --pos 0x0 --rotate normal --output DP-3 --off --output DP-2 --off --output DP-1 --off

the system freezes and I see the exact same stacktrace in my syslog as posted in the duplicate issues #1813763 and #1813831.
Reverting to 4.15.0-43-generic fixes the problem for me.