Workspace Switcher won't show updated screen layout until clicked on

Submitted by haarp

Assigned to Nick Schermer

Link to original bug (#10160)

Description

When monitors are added or removed via xrandr, the switcher will still show the old layout until clicked on.

Version: 4.10.1

added 5. Workspace Switcher / Pager label

added 5. Multi-Monitor label

Not able to reproduce this with certainty.

@haarp: Can you provide steps of how you can reporoduce this and/or provide a video.

added 3. Need Info label

1. Have two monitors active with windows on both
2. Have workspace switcher active with multiple workspaces, in minature view, one row

-> Workspace switcher is sized to encompass both montitors. e.g. 2 workspaces on 2x 1920x1080 side-by-side results in two boxes, each of which encompasses a 3840x1080 area. This is obvious when moving large windows.

3. Disable one monitor with xrandr --output $foo --off

-> Total screen size is reduced to 1920x1080, but Workspace switcher is still sized 3840x1080 per workspace

4. Manually change number of workspace back and forth

-> Now the workspace switcher is updated properly, resizing itself to 1920x1080 per workspace

removed 3. Need Info label

Not able to repo this with Xubuntu 20.04 and Xfce 4.14.

I did notice that after restarting, the switcher was incorrectly showing 2 screens workspaces and clicking it did correct the issue.

I tried this with a 3 monitor setup and the Workspace Switcher resizes immediately after using xrandr to switch off a display

What I tried:

$ xrandr --listmonitors 
Monitors: 3
 0: +*DP-2 1920/344x1080/194+0+0  DP-2
 1: +HDMI-0 1920/527x1080/296+3840+0  HDMI-0
 2: +DP-4 1920/521x1080/293+1920+0  DP-4

A panel in each monitor with the Workspace Switcher added, Show miniature view is checked. Then:

xrandr --output HDMI-0 --off

Workspace Switcher resizes immediately after using xrandr

Here's a video showing my testing https://imgur.com/a/u7liixI

I'm using this

OS: Ubuntu 20.04.2 LTS x86_64 
XFCE: 4.14 (no Xubuntu-dev ppa added)
Kernel: 5.4.0-65-generic 
CPU: Intel i7-9750H (12) @ 2.600GHz 
GPU: NVIDIA GeForce GTX 1660 Ti Mobi

It works fine for me too. We track monitor changes well in our code, and the callback rebuilds the pager completely, so I don't think that's where the problem is coming from.

It may be that Libwnck fails to set the layout, especially when there are multiple plugins (which does not seem to be the case here). But in these cases, there is not much we can do. I'm closing.

closed

added 3. Not Xfce label