lock screen does not fill screen when two monitors are in use

[Thomas Castleman]

Problem occurs with all kernels tried (4.15, 5.0, 5.1, and 5.2), and no matter what the resolution of the second monitor is set to.

When system is locked, the lock screen takes up less than 1/4 of the primary monitor's area. It is expected the lock screen at least fill the entire primary display.

output of lsb_release -rd:
Description: Ubuntu 18.04.3 LTS
Release: 18.04

Package version: 0.9.6.1

No log files where found in /tmp to indicate any problems occurred. Attached is the seat0-greeter.log file found in /var/log/lightdm.

You can see in the log file on lines 44 and 45 that it knows the main monitor is 1920x1080, and it sets the MainWindow to this same resolution during start up. However, on lines 125-127 that it gets 720x480 to use for the MainWindow. I have no idea where it got this resolution since Monitor :0 is 1920x1080 and Monitor :1 is 1360x768, and I get the same results when I set both monitors to 1920x1080 (you can see this on lines 206-208).

Please note that I plugged in the secondary monitor after I logged in. This was done to work around an unrelated problem with Xfce font scaling.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: budgie-lightdm-theme 0.9.6.1
Uname: Linux 5.2.0-11.1-liquorix-amd64 x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7.7
Architecture: amd64
CurrentDesktop: XFCE
Date: Sun Sep 1 19:45:28 2019
InstallationDate: Installed on 2019-06-30 (63 days ago)
InstallationMedia: Xubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
PackageArchitecture: all
SourcePackage: budgie-artwork
UpgradeStatus: No upgrade log present (probably fresh install)

[fossfreedom (fossfreedom)]

You filed this bug report under "budgie-artwork" - budgie uses gnome-screensaver, so I've changed the package for the bug-report.

Note though - your bug report also states that your current desktop is "XFCE" - so what are you using?

I would recommend that you test this on a clean live session boot of ubuntu budgie 18.04.3 just in-case you have some weird XFCE/Budgie interaction issues.

[Thomas Castleman (batcastle)]

I just tried Ubuntu Budgie 18.04.3 and while it does use entire primary display on the lock screen, it struggles to use the secondary display at all while a live system. I would install it next to my Xubuntu installation and give it a shot to see if I could get I could get it working properly but I would rather not risk breaking it since I have a knack for borking things. I honestly think the live system issue is down to it using nouveau instead of the proprietary Nvidia Drivers. But that's besides the point.

I'll try installing the Budgie desktop on my Xubuntu installation to see if that helps anything. I don't have very high hopes but it's worth a shot, unless someone can provide me with an alternative approach.