Also tested with mutter-common 42.5-0ubuntu1 and gnome-shell 42.5-0ubuntu1:
fabiomirmar@U-1JSKZM4R9U78P:~$ sudo apt-cache policy mutter-common [sudo] password for fabiomirmar: mutter-common: Installed: 42.5-0ubuntu1 Candidate: 42.5-0ubuntu1 Version table: *** 42.5-0ubuntu1 500 500 http://sa-east-1.ec2.archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages 100 /var/lib/dpkg/status 42.0-3ubuntu2 500 500 http://sa-east-1.ec2.archive.ubuntu.com/ubuntu jammy/main amd64 Packages fabiomirmar@U-1JSKZM4R9U78P:~$ sudo apt-cache policy gnome-shell gnome-shell: Installed: 42.5-0ubuntu1 Candidate: 42.5-0ubuntu1 Version table: *** 42.5-0ubuntu1 500 500 http://sa-east-1.ec2.archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages 100 /var/lib/dpkg/status 42.0-2ubuntu1 500 500 http://sa-east-1.ec2.archive.ubuntu.com/ubuntu jammy/main amd64 Packages And I have the same issue. When I apply the scale change I see: May 25 13:30:21 U-1JSKZM4R9U78P systemd[2514]: vte-spawn-11c0b6cb-a094-4eee-9cbf-7a694348f00a.scope: Consumed 1.272s CPU time. May 25 13:30:21 U-1JSKZM4R9U78P systemd[2514]: gnome-terminal-server.service: Consumed 1.231s CPU time. May 25 13:30:25 U-1JSKZM4R9U78P gnome-shell[2862]: Impossible to set scaling on crtc 59 to 0.615385, error id 2 May 25 13:30:25 U-1JSKZM4R9U78P gnome-shell[2862]: Window manager warning: Scalig CRTC 59 at 0.615385 failed May 25 13:30:25 U-1JSKZM4R9U78P gnome-shell[2862]: Xlib: extension "DPMS" missing on display ":1". May 25 13:30:25 U-1JSKZM4R9U78P gnome-shell[2862]: Missing logical monitor, using scale 1 May 25 13:30:26 U-1JSKZM4R9U78P gnome-shell[2862]: Xlib: extension "DPMS" missing on display ":1". May 25 13:30:26 U-1JSKZM4R9U78P gnome-shell[2862]: Missing logical monitor, using scale 1 May 25 13:30:26 U-1JSKZM4R9U78P gnome-shell[2862]: Spurious clutter_actor_allocate called for actor 0x55a6ef3a4ba0/<dashtodockContainer>[<Gjs_ubuntu-dock_ubuntu_com_docking_DashToDock>:0x55a6ef3a4ba0] which isn't a descendent of the stage! May 25 13:30:26 U-1JSKZM4R9U78P gsd-color[2980]: could not find device: property match 'XRANDR_name'='VNC-output-0' does not exist May 25 13:30:26 U-1JSKZM4R9U78P gsd-color[2980]: could not find device: property match 'XRANDR_name'='VNC-output-1' does not exist May 25 13:30:26 U-1JSKZM4R9U78P gsd-color[2980]: could not find device: property match 'XRANDR_name'='VNC-output-2' does not exist May 25 13:30:26 U-1JSKZM4R9U78P gsd-color[2980]: could not find device: property match 'XRANDR_name'='VNC-output-3' does not exist May 25 13:30:26 U-1JSKZM4R9U78P gsd-color[2980]: could not find device: property match 'XRANDR_name'='VNC-output-0' does not exist May 25 13:30:26 U-1JSKZM4R9U78P gsd-color[2980]: could not find device: property match 'XRANDR_name'='VNC-output-1' does not exist May 25 13:30:26 U-1JSKZM4R9U78P gsd-color[2980]: could not find device: property match 'XRANDR_name'='VNC-output-2' does not exist May 25 13:30:26 U-1JSKZM4R9U78P gsd-color[2980]: could not find device: property match 'XRANDR_name'='VNC-output-3' does not exist May 25 13:30:26 U-1JSKZM4R9U78P gnome-shell[2862]: Can't update stage views actor <unnamed>[<MetaWindowGroup>:0x55a6ee826330] is on because it needs an allocation. May 25 13:30:26 U-1JSKZM4R9U78P gnome-shell[2862]: Can't update stage views actor <unnamed>[<MetaWindowActorX11>:0x55a6f04896e0] is on because it needs an allocation. May 25 13:30:26 U-1JSKZM4R9U78P gnome-shell[2862]: Can't update stage views actor <unnamed>[<MetaSurfaceActorX11>:0x55a6f048ca30] is on because it needs an allocation. May 25 13:30:26 U-1JSKZM4R9U78P gnome-shell[2862]: Window manager warning: Overwriting existing binding of keysym 31 with keysym 31 (keycode a). May 25 13:30:26 U-1JSKZM4R9U78P gnome-shell[2862]: Window manager warning: Overwriting existing binding of keysym 32 with keysym 32 (keycode b). May 25 13:30:26 U-1JSKZM4R9U78P gnome-shell[2862]: Window manager warning: Overwriting existing binding of keysym 33 with keysym 33 (keycode c). May 25 13:30:26 U-1JSKZM4R9U78P gnome-shell[2862]: Window manager warning: Overwriting existing binding of keysym 34 with keysym 34 (keycode d). May 25 13:30:26 U-1JSKZM4R9U78P gnome-shell[2862]: Window manager warning: Overwriting existing binding of keysym 35 with keysym 35 (keycode e). May 25 13:30:26 U-1JSKZM4R9U78P gnome-shell[2862]: Window manager warning: Overwriting existing binding of keysym 36 with keysym 36 (keycode f). May 25 13:30:26 U-1JSKZM4R9U78P gnome-shell[2862]: Window manager warning: Overwriting existing binding of keysym 37 with keysym 37 (keycode 10). May 25 13:30:26 U-1JSKZM4R9U78P gnome-shell[2862]: Window manager warning: Overwriting existing binding of keysym 38 with keysym 38 (keycode 11). May 25 13:30:26 U-1JSKZM4R9U78P gnome-shell[2862]: Window manager warning: Overwriting existing binding of keysym 39 with keysym 39 (keycode 12). May 25 13:30:27 U-1JSKZM4R9U78P gnome-shell[2862]: Can't update stage views actor <unnamed>[<MetaWindowGroup>:0x55a6ee826330] is on because it needs an allocation. May 25 13:30:27 U-1JSKZM4R9U78P gnome-shell[2862]: Can't update stage views actor <unnamed>[<MetaWindowActorX11>:0x55a6f0488f00] is on because it needs an allocation. May 25 13:30:27 U-1JSKZM4R9U78P gnome-shell[2862]: Can't update stage views actor <unnamed>[<MetaSurfaceActorX11>:0x55a6f048cdb0] is on because it needs an allocation. When I try to revert I get: May 25 13:30:34 U-1JSKZM4R9U78P gnome-shell[2862]: Failed to restore previous configuration: Invalid mode 2560x984 (19.921875) for monitor 'unknown unknown' May 25 13:30:34 U-1JSKZM4R9U78P gnome-shell[2862]: Failed to use stored monitor configuration: Invalid mode 1920x1080 (19.958942) for monitor 'unknown unknown' May 25 13:30:34 U-1JSKZM4R9U78P gnome-shell[2862]: Failed to use linear monitor configuration: Invalid mode 800x600 (-nan) for monitor 'unknown unknown' May 25 13:30:34 U-1JSKZM4R9U78P gnome-shell[2862]: Failed to use fallback monitor configuration: Invalid mode 800x600 (-nan) for monitor 'unknown unknown' May 25 13:30:34 U-1JSKZM4R9U78P gnome-shell[2862]: Impossible to set scaling on crtc 59 to 1.000000, error id 2 May 25 13:30:35 U-1JSKZM4R9U78P gnome-shell[2862]: Xlib: extension "DPMS" missing on display ":1". May 25 13:30:35 U-1JSKZM4R9U78P gsd-color[2980]: could not find device: property match 'XRANDR_name'='VNC-output-0' does not exist May 25 13:30:35 U-1JSKZM4R9U78P gsd-color[2980]: could not find device: property match 'XRANDR_name'='VNC-output-1' does not exist May 25 13:30:35 U-1JSKZM4R9U78P gsd-color[2980]: could not find device: property match 'XRANDR_name'='VNC-output-2' does not exist May 25 13:30:35 U-1JSKZM4R9U78P gsd-color[2980]: could not find device: property match 'XRANDR_name'='VNC-output-3' does not exist May 25 13:30:35 U-1JSKZM4R9U78P gsd-color[2980]: could not find device: property match 'XRANDR_name'='VNC-output-0' does not exist May 25 13:30:35 U-1JSKZM4R9U78P gsd-color[2980]: could not find device: property match 'XRANDR_name'='VNC-output-1' does not exist May 25 13:30:35 U-1JSKZM4R9U78P gsd-color[2980]: could not find device: property match 'XRANDR_name'='VNC-output-2' does not exist May 25 13:30:35 U-1JSKZM4R9U78P gsd-color[2980]: could not find device: property match 'XRANDR_name'='VNC-output-3' does not exist May 25 13:30:35 U-1JSKZM4R9U78P gnome-shell[2862]: DING: (gnome-control-center:3419): display-cc-panel-WARNING **: 13:30:35.541: Config not applicable: GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: Monitor mode not found May 25 13:30:35 U-1JSKZM4R9U78P gnome-shell[2862]: DING: (gnome-control-center:3419): display-cc-panel-WARNING **: 13:30:35.567: Config not applicable: GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: Monitor mode not found May 25 13:30:35 U-1JSKZM4R9U78P gnome-shell[2862]: Can't update stage views actor <unnamed>[<MetaWindowGroup>:0x55a6ee826330] is on because it needs an allocation. May 25 13:30:35 U-1JSKZM4R9U78P gnome-shell[2862]: Can't update stage views actor <unnamed>[<MetaWindowActorX11>:0x55a6f0488f00] is on because it needs an allocation. May 25 13:30:35 U-1JSKZM4R9U78P gnome-shell[2862]: Can't update stage views actor <unnamed>[<MetaSurfaceActorX11>:0x55a6f048cdb0] is on because it needs an allocation. May 25 13:30:35 U-1JSKZM4R9U78P gnome-shell[2862]: Can't update stage views actor <unnamed>[<MetaWindowGroup>:0x55a6ee826330] is on because it needs an allocation. May 25 13:30:35 U-1JSKZM4R9U78P gnome-shell[2862]: Can't update stage views actor <unnamed>[<MetaWindowActorX11>:0x55a6f0488f00] is on because it needs an allocation. May 25 13:30:35 U-1JSKZM4R9U78P gnome-shell[2862]: Can't update stage views actor <unnamed>[<MetaSurfaceActorX11>:0x55a6f048cdb0] is on because it needs an allocation. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/2020782 Title: Changing display scale setting and reverting it, causes gnome-shell to error with "Failed to restore previous configuration" and other error messages Status in mutter package in Ubuntu: New Bug description: In Amazon Workspaces running Ubuntu 22.04, when attempting to change the Scale in the Gnome Display settings, if you click on a different scale (i.e. changing from 100% to 200%) and hitting apply, it will bring up a prompt asking if you want to keep or revert the changes and there will be a timer of 20 seconds. If you try to revert the changes (either by letting the timer expire or by clicking the "revert" button), we will hit one of the following two behaviors: 1 - The setting won't revert and will keep scaled 2 - gnome-shell will show some error messages in syslog and the display will be "corrupted", where the only window you are able to click is the display setting and if you try to drag it, it will leave a "blur" throughout the window (per discussions, this seems to be https://launchpad.net/bugs/1924689) For both situations, changing the display resolution (i.e. going into and out of full screen in the workspaces client) will fix the issue When hitting situation 1, syslog shows: May 17 17:33:10 U-1AZMIM8SIPZ6I gnome-shell[3030]: Failed to restore previous configuration: Invalid mode 1920x1080 (19.958942) for monitor 'unknown unknown' When hitting situation 2, syslog shows: May 17 17:31:24 U-1AZMIM8SIPZ6I gnome-shell[3030]: Failed to restore previous configuration: Invalid mode 1920x984 (19.895834) for monitor 'unknown unknown' May 17 17:31:24 U-1AZMIM8SIPZ6I gnome-shell[3030]: Failed to use stored monitor configuration: Invalid mode 1920x984 (19.895834) for monitor 'unknown unknown' May 17 17:31:24 U-1AZMIM8SIPZ6I gnome-shell[3030]: Failed to use linear monitor configuration: Invalid mode 800x600 (-nan) for monitor 'unknown unknown' May 17 17:31:24 U-1AZMIM8SIPZ6I gnome-shell[3030]: Failed to use fallback monitor configuration: Invalid mode 800x600 (-nan) for monitor 'unknown unknown' May 17 17:31:24 U-1AZMIM8SIPZ6I gnome-shell[3030]: Impossible to set scaling on crtc 59 to 1.000000, error id 2 May 17 17:31:24 U-1AZMIM8SIPZ6I gnome-shell[3030]: Xlib: extension "DPMS" missing on display ":1". May 17 17:31:24 U-1AZMIM8SIPZ6I gnome-shell[3030]: Object St.Label (0x557090d07de0), has been already disposed — impossible to access it. This might be caused by the object having been destroyed from C code using something such as destroy(), dispose(), or remove() vfuncs. May 17 17:31:24 U-1AZMIM8SIPZ6I gnome-shell[3030]: == Stack trace for context 0x557090bee180 == May 17 17:31:24 U-1AZMIM8SIPZ6I gnome-shell[3030]: #0 557093f00e68 i /usr/share/gnome-shell/extensions/ubuntu-d...@ubuntu.com/appIcons.js:1349 (2cdac32b2e20 @ 105) May 17 17:31:24 U-1AZMIM8SIPZ6I gnome-shell[3030]: #1 557093f00dd8 i /usr/share/gnome-shell/extensions/ubuntu-d...@ubuntu.com/dash.js:42 (2cdac32a5d80 @ 27) May 17 17:31:24 U-1AZMIM8SIPZ6I gnome-shell[3030]: #2 557093f00d58 i resource:///org/gnome/shell/ui/dash.js:545 (20c3e0d20970 @ 24) May 17 17:31:24 U-1AZMIM8SIPZ6I gnome-shell[3030]: JS ERROR: TypeError: monitor is null#012_updateWorkAreaBox@resource:///org/gnome/shell/ui/overviewControls.js:58:26#012_init/<@resource:///org/gnome/shell/ui/overviewControls.js:51:45 Sometimes the stack trace isn't shown, but the symptom is the same: May 17 18:31:39 U-1AZMIM8SIPZ6I gnome-shell[3030]: Failed to restore previous configuration: Invalid mode 1920x984 (19.895834) for monitor 'unknown unknown' May 17 18:31:39 U-1AZMIM8SIPZ6I gnome-shell[3030]: Failed to use stored monitor configuration: Invalid mode 1920x984 (19.895834) for monitor 'unknown unknown' May 17 18:31:39 U-1AZMIM8SIPZ6I gnome-shell[3030]: Failed to use linear monitor configuration: Invalid mode 800x600 (-nan) for monitor 'unknown unknown' May 17 18:31:39 U-1AZMIM8SIPZ6I gnome-shell[3030]: Failed to use fallback monitor configuration: Invalid mode 800x600 (-nan) for monitor 'unknown unknown' May 17 18:31:39 U-1AZMIM8SIPZ6I gnome-shell[3030]: Impossible to set scaling on crtc 59 to 1.000000, error id 2 May 17 18:31:40 U-1AZMIM8SIPZ6I gnome-shell[3030]: Xlib: extension "DPMS" missing on display ":1". I'm unable to reproduce the problem if I manually install ubuntu-desktop and use the Nice DCV Server (as used by Workspaces) by following the steps from (using the xorg-x11-drv-dummy): https://docs.aws.amazon.com/dcv/latest/adminguide/setting-up- installing-linux.html One relevant difference is that Workspaces uses a custom X11 server /usr/bin/Xdcv, instead of /usr/lib/xorg/Xorg, and they have the following process being started: /usr/bin/Xdcv -output 800x600+0+0 -output 800x600+800+0 -output 800x600+1600+0 -output 800x600+2400+0 -enabledoutputs 1 vt2 -displayfd 3 -auth /run/user/541001128/gdm/Xauthority -nolisten tcp -background none -noreset -keeptty -novtswitch -verbose 3 I'm also unable to reproduce the problem using xrdp + Xorg. While discussing this with the desktop crew, it was mentioned that we see the same problems in Xorg. And to a much lesser extent some issues in Wayland too when changing scales. mutter and gnome-shell versions being used: $ sudo apt-cache policy mutter-common mutter-common: Installed: 42.2-0ubuntu1 Candidate: 42.5-0ubuntu1 Version table: 42.5-0ubuntu1 500 500 http://sa-east-1.ec2.archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages *** 42.2-0ubuntu1 100 100 /var/lib/dpkg/status 42.0-3ubuntu2 500 500 http://sa-east-1.ec2.archive.ubuntu.com/ubuntu jammy/main amd64 Packages $ sudo apt-cache policy gnome-shell gnome-shell: Installed: 42.4-0ubuntu0.22.04.1 Candidate: 42.5-0ubuntu1 Version table: 42.5-0ubuntu1 500 500 http://sa-east-1.ec2.archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages *** 42.4-0ubuntu0.22.04.1 100 100 /var/lib/dpkg/status 42.0-2ubuntu1 500 500 http://sa-east-1.ec2.archive.ubuntu.com/ubuntu jammy/main amd64 Packages To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/2020782/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp