| Summary: | plasmashell process consumes all shared memory (SHM) segments, causing problems for other process that need to be able to allocate SHM | ||
|---|---|---|---|
| Product: | [Plasma] plasmashell | Reporter: | Cobus Carstens <cobus.carstens> |
| Component: | general | Assignee: | David Edmundson <kde> |
| Status: | RESOLVED FIXED | ||
| Severity: | normal | CC: | plasma-bugs-null, the.great.zarf |
| Priority: | NOR | ||
| Version First Reported In: | 5.14.2 | ||
| Target Milestone: | 1.0 | ||
| Platform: | Kubuntu | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed In: | ||
| Sentry Crash Report: | |||
| Attachments: | Output of lsipc -m. Notice all the plasmashell entries. | ||
Please report if: * it happens under a new user / wiped ~/.config/plasma* * Run kcmshell5 qtquicksettings and report with the software backend It does not occur for a new user. Also, removing ~/.config/plasma* fixed it for the existing user. Thanks! Marking as resolved. I seem to have been a bit premature in marking the issue as resolved. The issue re-surfaced after deleting ~/.config/plasma* Using the software rendered seems to do the trick. I have been working for a few hours now and the SHM is constant. Removing the Nouveau drivers and using the Intel ones seems to have sorted out the problem. |
Created attachment 116046 [details] Output of lsipc -m. Notice all the plasmashell entries. SUMMARY Shortly after system boot all available shared memory segments are consumed by the plasmashell process, causing other applications that makes use of it (for rendering, for instance) to fail [in my case specifically the `keepassx` application]. STEPS TO REPRODUCE 1. Boot 2. Check shared memory using the `lsipc` command. 3. Repeat 2 and watch the shared memory segments usage climb to 100% OBSERVED RESULT From `lsipc`: SHMMNI Shared memory segments 4096 4096 100.00% SHMALL Shared memory pages 18446744073692774399 575743 0.00% SHMMAX Max size of shared memory segment (bytes) 18446744073692774399 - - From `lsipc -m`: 0x00000000 196055039 rwxrwxrwx cobusc 480K 1 dest Nov01 6380 19719 /usr/bin/plasmashell (this is repeated 4072 times) notice that the segments are flagged as "to be destroyed", but it cannot, since the process is still attached. EXPECTED RESULT SOFTWARE VERSIONS (available in About System) KDE Plasma Version: 4:5.14.2-0ubuntu1~ubuntu18.10~ppa1 KDE Frameworks Version: 5.51.0 Qt Version: 5.11.1 ADDITIONAL INFORMATION