Workspace previews dissapear from the picker on one of the displays when monitor unplugged

[Kartonrealista]

[ids1024]

2de3669 may fix this.

[Kartonrealista]

Reaopening this since it reoccured. This time it happened when I unplugged and replugged my second monitor. This also resulted in only one workspace being present on the replugged monitor instead of default two.

[jagg2]

I have also run into this. Seems to effect my monitor running over DP when I turn it off and back on. Does not seem to effect my VGA monitor using DP adapter, or my monitor running over HDMI. Logging out and back in seems to fix it, until I turn my monitor off again.

[Kartonrealista]

I have also run into this. Seems to effect my monitor running over DP when I turn it off and back on. Does not seem to effect my VGA monitor using DP adapter, or my monitor running over HDMI. Logging out and back in seems to fix it, until I turn my monitor off again.

In my case the monitor I didn't unplug lost workspace previews.

[nevdelap]

I assume this is the same issue. I've had it since first installing the alpha when it was released.

When I log in it is working, and stops working sometime later. It might be after I've locked and unlocked the screen, but not sure about that.

It is always my main (larger) screen that they are blank, but I haven't checked if that is always showing up as zero. When I next log out and in I'll see.

Update: it is not related to locking and unlocking the screen because since pop-os/cosmic-greeter#126 I've disabled my lock screen shortcut and haven't been locking my screen (home machine) and it is still the case. And it has been screen 0 each time I've checked.

[nevdelap]

Hi @Kartonrealista. How would you characterize the sometimes-ness of this issue? For me it is always. If it is for you too maybe it would be worth updating the issue title?

[nevdelap]

I've just found something useful. Kill cosmic-workspaces and when it restarts when you press Super+w it is working again.

killall cosmic-workspaces

Update: I can confirm that it happened immediately when I've just turned it off and on after reading @Kartonrealista's update to the issue title, and killing it and having it restart worked around/fixed it. I'm pretty certain it does happen without turning the monitor off/disconnecting, I'll keep an eye on it to confirm. I think it is only when I turn off my external monitor and turn it back on.

[Gdetrane]

This is also happening for me, I'm on fedora 40 csb. I can't seem to reproduce this bug consistently, but it often happens when plugging to a different external monitor.
The workspace preview in the space of my laptop monitor does not seem to be affected.
This happens on my external monitor at home, via HDMI, as well as monitors in my office, which use DP via usb-c, I believe.
I'll attach a dump of cpu-x in case is it's useful.

cpux.txt

[Gdetrane]

I've just found something useful. Kill cosmic-workspaces and when it restarts when you press Super+w it is working again.

killall cosmic-workspaces

Update: I can confirm that it happened immediately when I've just turned it off and on after reading @Kartonrealista's update to the issue title, and killing it and having it restart worked around/fixed it. I'm pretty certain it does happen without turning the monitor off/disconnecting, I'll keep an eye on it to confirm.

@nevdelap Killing and restarting the workspaces applet works, I can confirm that

[NahsiN]

This bug also affects me and is reproducible as follows:

1. Plug in external monitor via HDMI. Workspaces view works on both monitors
2. Suspend the laptop
3. Unplug external monitor while laptop is suspended
4. Wake up laptop and login
5. Connect external monitor to same HDMI port. Workspaces view works on laptop monitor but is blank on external monitor as shown below:
   

I've just found something useful. Kill cosmic-workspaces and when it restarts when you press Super+w it is working again.

killall cosmic-workspaces

Update: I can confirm that it happened immediately when I've just turned it off and on after reading @Kartonrealista's update to the issue title, and killing it and having it restart worked around/fixed it. I'm pretty certain it does happen without turning the monitor off/disconnecting, I'll keep an eye on it to confirm.

I too confirm this works. Thank you so much for this workaround!

[locomot1f]

I had started a similar thread.

I've had this same issue as well.
With me, I've never unplugged my monitor.
It will always happen when I put my PC into Suspend mode.

thanks for the workaround.
talk soon.