Secondary monitor black after rotation
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
kwin (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
I have two monitors, a landscape 1680x1050 (main monitor) and a portrait 1920x1080, rotated 90 degrees anticlockwise (secondary monitor). Nvidia graphics card, with the proprietary drivers.
When I log in, the secondary monitor is entirely black. If I move my mouse to the monitor, I can see it. If I try to drag a window to it, I can see the mouse cursor but no window.
If I use Ctrl-Alt-F2 to swap to a console, then swap back to the desktop the problem is resolved and I have a notification stating that kwin restarted desktop effects due to a graphics change.
This is reproducible, it happens every time I log in.
Please let me know if I can provide more details.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: kwin (not installed)
ProcVersionSign
Uname: Linux 5.4.0-18-generic x86_64
NonfreeKernelMo
ApportVersion: 2.20.11-0ubuntu21
Architecture: amd64
CurrentDesktop: KDE
Date: Tue Mar 24 10:16:47 2020
InstallationDate: Installed on 2018-10-22 (518 days ago)
InstallationMedia: Kubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.2)
SourcePackage: kwin
UpgradeStatus: Upgraded to focal on 2020-02-06 (46 days ago)
summary: |
- Second monitor starts up black + Secondary monitor black after rotation |
Update:
If I go to System Settings/Display and Monitor, then click "Identify", then only the primary monitor is identified.
I tried disabling the secondary monitor and re-enabling it, and that fixed the problem as well for this session.