Crash when unplug displaylink hub under wayland

General Help
1

I recently switched from x11 to wayland as I got a new monitor which needed fractional scaling and x11 didn't handle having multiple monitors with differing fractional scaling well.

An issue I've had since switching is that when I unplug my USB C displaylink hub the desktop environment crashes and I'm booted out to the login screen. On logging back in all have quit.

I think the culprit may be the Zorin App Indicator plugin as this is one of the first post-disconnect errors in the log:

May 08 18:06:39 john-xps15-zorin gnome-shell[76310]: [76287:1916407:0508/180639.014799:ERROR:net/socket/socket_posix.cc:93] CreatePlatformSocket() failed: Address family not supported by protocol (97)
May 08 18:06:39 john-xps15-zorin gnome-shell[76310]: [76287:1916407:0508/180639.016420:ERROR:net/socket/socket_posix.cc:93] CreatePlatformSocket() failed: Address family not supported by protocol (97)
May 08 18:06:39 john-xps15-zorin gnome-shell[25510]: JS ERROR: Gio.DBusError: GDBus.Error:org.freedesktop.DBus.Error.Failed: error occurred in Get
                                                     _promisify/proto[asyncFunc]/</<@resource:///org/gnome/gjs/modules/core/overrides/Gio.js:446:45
                                                     ### Promise created here: ###
                                                     getProperty@/usr/share/gnome-shell/extensions/zorin-appindicator@zorinos.com/util.js:553:33
                                                     refreshProperty@/usr/share/gnome-shell/extensions/zorin-appindicator@zorinos.com/appIndicator.js:316:48
                                                     _refreshOwnProperties/<@/usr/share/gnome-shell/extensions/zorin-appindicator@zorinos.com/appIndicator.js:202:32
                                                     _refreshOwnProperties@/usr/share/gnome-shell/extensions/zorin-appindicator@zorinos.com/appIndicator.js:200:51
                                                     _onSignalAsync/refreshPropertiesPromises<@/usr/share/gnome-shell/extensions/zorin-appindicator@zorinos.com/appIndicator.js:256:26
                                                     _onSignalAsync@/usr/share/gnome-shell/extensions/zorin-appindicator@zorinos.com/appIndicator.js:255:50
                                                     async*_onSignal@/usr/share/gnome-shell/extensions/zorin-appindicator@zorinos.com/appIndicator.js:214:14
                                                     _init/<@/usr/share/gnome-shell/extensions/zorin-appindicator@zorinos.com/util.js:504:43
May 08 18:06:39 john-xps15-zorin systemd[1]: docker-150f2e45d6ba89185ca08a69229ac3882233571571bda46afe1c1c1ab303d5c7.scope: Deactivated successfully.
May 08 18:06:39 john-xps15-zorin systemd[1]: docker-150f2e45d6ba89185ca08a69229ac3882233571571bda46afe1c1c1ab303d5c7.scope: Consumed 1.696s CPU time.
May 08 18:06:40 john-xps15-zorin containerd[1987]: time="2025-05-08T18:06:40.003724382+01:00" level=info msg="shim disconnected" id=150f2e45d6ba89185ca08a69229ac3882233571571bda46afe1c1c1ab303d5c7 namespace=moby
May 08 18:06:40 john-xps15-zorin containerd[1987]: time="2025-05-08T18:06:40.003770771+01:00" level=warning msg="cleaning up after shim disconnected" id=150f2e45d6ba89185ca08a69229ac3882233571571bda46afe1c1c1ab303d5c7 namespace=moby
May 08 18:06:40 john-xps15-zorin containerd[1987]: time="2025-05-08T18:06:40.003784399+01:00" level=info msg="cleaning up dead shim" namespace=moby
May 08 18:06:40 john-xps15-zorin dockerd[10658]: time="2025-05-08T18:06:40.003778744+01:00" level=info msg="ignoring event" container=150f2e45d6ba89185ca08a69229ac3882233571571bda46afe1c1c1ab303d5c7 module=libcontainerd namespace=moby topic=/tasks/delete type="*events.TaskDelete"

Has anyone else seen this issue and know of any fixes/workarounds that don't involve disabling the extension, which is a last resort.

There's a lot in the logs, so I can't be 100% sure that's the culprit, but from reading around it seems likely.

Next time I'm in work I'll try unpluggin but with the extension disabled and see what happens.

2

The Problem could be the USB Displaylink Hub, too. An easy Thing to try would be to turn off the Zorin AppIndicator Extension and then try if works.

An Alternative to the Zorin AppIndicator Extension is this: AppIndicator and KStatusNotifierItem Support - GNOME Shell Extensions

You could use/try this instead. But first, I would suggest the Action from the Beginning.

1 Like
3

Did a bit of testing this morning and have now managed to resolve the issue.

  • Disabling Zorin AppIndicator stopped the crash when unplugging DisplayLink hub
  • Enabling Zorin AppIndicator and plugging monitor into HDMI, rather than DVI also resolved the resolved the issue.

So I have now now stuck with the second solution as it means I can still use AppIndicator.

Seems like it's a fairly specific bug relating the combination of Wayland, DisplayLink hub and DVI connected monitor.

1 Like
4

Turns out it's not fixed but doesn't happen every time. It does seem to happen every time at the end of a working day though.

And I was able to unplug the DisplayLink hub tonight without issue. But then and I unplugged the USB-C monitor and it crashed.

One change I had made was to plug the ethernet into the monitor ethernet port, and the same with the audio jack. So one of those two may be the culprit.

I don't think the AppIndicator extension is a factor any more.