https://bugs.kde.org/show_bug.cgi?id=492563
Bug ID: 492563
Summary: kdeconnect freezes plasmashell upon successful
connection to phone
Classification: Applications
Product: kdeconnect
Version: 24.08.0
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: critical
Priority: NOR
Component: common
Assignee: albertv...@gmail.com
Reporter: keigh....@gmail.com
CC: andrew.g.r.hol...@gmail.com
Target Milestone: ---
SUMMARY
Immediately after kdeconnect connects to my phone (running android),
plasmashell completely freezes.
OBSERVED RESULT
1. all plasamshell panels freeze and
1. stop responding to any mouse/keyboard (shortcut) interactions
2. stop updating any visuals (e.g. clock no longer goes)
2. other parts of the KDE work without much problem
1. all existing apps and their windows continue to work as expected
2. keyboard shortcuts that are not related to plasmashell elements continue
to work, for example, I can call krunner via keyboard shortcut and start a new
application
3. kwin continues to properly render and tile app windows
4. system clipboard stops working for GUI apps, but accessible via bash
commands, such as `wl-copy`
3. journal log messages from kdeconnectd around the time of freezing
```
Sep 02 15:50:48 feist kdeconnectd[1682]: 2024-09-02T15:50:48 default: new
capabilities for "phone-name"
Sep 02 15:50:48 feist kdeconnectd[1682]: 2024-09-02T15:50:48
kf.modemmanagerqt: Failed enumerating MM objects:
"org.freedesktop.DBus.Error.NameHasNoOwner"
Sep 02 15:50:48 feist kdeconnectd[1682]: 2024-09-02T15:50:48 default:
Connecting to deprecated signal
QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString)
Sep 02 15:50:49 feist kdeconnectd[1682]: 2024-09-02T15:50:49 default:
DataControlOffer: timeout reading from pipe
Sep 02 15:50:50 feist kdeconnectd[1682]: 2024-09-02T15:50:50 default:
DataControlOffer: timeout reading from pipe
```
4. `kquitapp6 plasmashell` timeouts after 60 seconds
```
"Quitting application plasmashell failed. Error reported was:\n\n
org.freedesktop.DBus.Error.NoReply : Did not receive a reply. Possible causes
include: the remote application did not send a reply, the message bus security
policy blocked the reply, the reply timeout expired, or the network connection
was broken."
```
5. at this point, only "fix" I found is just rebooting the system, but then
shutting down the system takes unusually long time, as plasmashell doesn't stop
obdiently. After the reboot, journal log shows
```
$ journalctl -b -1 | grep -i plasma
...
Sep 02 16:10:57 feist systemd[927]: Stopping KDE Plasma Workspace...
# 40 secs later
Sep 02 16:11:37 feist systemd[927]: plasma-plasmashell.service: State
'stop-sigterm' timed out. Killing.
Sep 02 16:11:37 feist systemd[927]: plasma-plasmashell.service: Killing
process 1337 (plasmashell) with signal SIGKILL.
Sep 02 16:11:37 feist systemd[927]: plasma-plasmashell.service: Killing
process 1684 (n/a) with signal SIGKILL.
Sep 02 16:11:37 feist systemd[927]: plasma-plasmashell.service: Killing
process 2269 (n/a) with signal SIGKILL.
Sep 02 16:11:37 feist systemd[927]: plasma-plasmashell.service: Killing
process 2360 (plasmash:gdrv0) with signal SIGKILL.
Sep 02 16:11:37 feist systemd[927]: plasma-plasmashell.service: Killing
process 2824 (n/a) with signal SIGKILL.
Sep 02 16:11:37 feist systemd[927]: plasma-plasmashell.service: Main process
exited, code=killed, status=9/KILL
Sep 02 16:11:37 feist systemd[927]: plasma-plasmashell.service: Failed with
result 'timeout'.
Sep 02 16:11:37 feist systemd[927]: Stopped KDE Plasma Workspace.
...
```
SOFTWARE/OS VERSIONS
OS: Arch Linux x86_64
Kernel: Linux 6.10.7-arch1-1
Shell: bash 5.2.32
DE: KDE Plasma 6.1.4
Terminal: konsole 24.8.0
Android: 14
Android App: kdeconnect 1.32 installed from Play store
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