Not super how much it helps, but I have the same exact issue on two different systems (one using Kubuntu 22.10 -- with a mainline kernel of 6.0 and the other one using Kubuntu 23.04 [upgraded from 22.10] development branch with a mainline kernel of 6.2.7).
This specifically happens when krunner is used to launch an application, and it happens randomly (even in the same session; but I noticed that it is less likely to happen when the first session started and more likely to happen after you start a few apps).
Here is what I get when I run krunner and choose slack to launch.
❯ krunner --replace
/user.slice/user-1000.slice/user@1000.service/app.slice/app-slack_slack-7092918b60f045318ad5898c1cd14a71.scope is not a snap cgroup
First attempt fails with this, but then I try it again and it works (2nd attempt). I quite and try to launch it again, but this time first two attempts fail and the third one succeeds and launches slack again.
/user.slice/user-1000.slice/user@1000.service/app.slice/app-slack_slack-e699191c66c043c49b21af01db44a21f.scope is not a snap cgroup
/user.slice/user-1000.slice/user@1000.service/app.slice/app-slack_slack-a38502fd65ca425ebdf9b3cbac2d154c.scope is not a snap cgroup
Not super how much it helps, but I have the same exact issue on two different systems (one using Kubuntu 22.10 -- with a mainline kernel of 6.0 and the other one using Kubuntu 23.04 [upgraded from 22.10] development branch with a mainline kernel of 6.2.7).
This specifically happens when krunner is used to launch an application, and it happens randomly (even in the same session; but I noticed that it is less likely to happen when the first session started and more likely to happen after you start a few apps).
Here is what I get when I run krunner and choose slack to launch.
❯ krunner --replace user-1000. slice/user@ 1000.service/ app.slice/ app-slack_ slack-7092918b6 0f045318ad5898c 1cd14a71. scope is not a snap cgroup
/user.slice/
First attempt fails with this, but then I try it again and it works (2nd attempt). I quite and try to launch it again, but this time first two attempts fail and the third one succeeds and launches slack again.
/user.slice/ user-1000. slice/user@ 1000.service/ app.slice/ app-slack_ slack-e699191c6 6c043c49b21af01 db44a21f. scope is not a snap cgroup user-1000. slice/user@ 1000.service/ app.slice/ app-slack_ slack-a38502fd6 5ca425ebdf9b3cb ac2d154c. scope is not a snap cgroup
/user.slice/
❯ echo $DBUS_SESSION_ BUS_ADDRESS /run/user/ 1000/bus
unix:path=
Everything I have is stock Kubuntu 23.04 (I'm updating it each day) except the mainline kernel (which is needed for the graphics driver).
System: AMD Ryzen 9 7950X as both the CPU and iGPU.