[Bug 1868704] [NEW] Second monitor starts up black

[Roger Light]

Public bug reported:

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)
ProcVersionSignature: Ubuntu 5.4.0-18.22-generic 5.4.24
Uname: Linux 5.4.0-18-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair nvidia_modeset nvidia
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)

** Affects: kwin (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug focal

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Title:
  Second monitor starts up black

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