[plasmashell] [Bug 483163] On X11 with compositing turned on, blank screen on lock screen when using Breeze Plasma style

[Nicole Schoebel]

https://bugs.kde.org/show_bug.cgi?id=483163

--- Comment #33 from Nicole Schoebel <schoebel220630 at nschoebel.de> ---
I just made an interesting observation. A couple of days ago I added a second
monitor to my system. Since then the bug had disappeared. I would always see
the lock screen as intended. Today I checked what happens when I remove the
second monitor again.

I unplugged the second monitor from the computer, changed
“/etc/X11/xorg.conf.d/10-monitor.conf” back to what it was before, and
rebooted. The bug was back. I would see a black lock screen with the exception
of a visible mouse cursor. I then plugged the (second) monitor cable back into
the computer, but did NOT connect the other end to the monitor yet. Bug still
there.

I then connected the other end of the cable to the monitor, and - without
having to reboot (!) - the lock screen would then work as intended. The monitor
was connected to power, but in standby at that point. When I turned it
completely on nothing was visible, it wasn’t even getting a signal. “xrandr -q”
was showing the monitor as connected though.

I then unplugged the monitor cable from the computer again. The lock screen
would still work as intended.

So, to sum it up: As long as I connect a second monitor at any time after a
reboot, the lock screen will work as intended until the next reboot. The
monitor does NOT have to stay connected. It just had to be there at some point.

For information: My primary monitor is connected via DisplayPort. The second
one is connected via HDMI.

-- 
You are receiving this mail because:
You are on the CC list for the bug.