Bug 406257

Summary:	At reboot dolphin launch thumbnail.so that eates a cpu
Product:	[Frameworks and Libraries] kio-extras	Reporter:	Busico Mirto Silvio <m.busico>
Component:	Thumbnails and previews	Assignee:	Plasma Bugs List <plasma-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	major	CC:	elvis.angelaccio, nate
Priority:	NOR
Version First Reported In:	17.12.3
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	thumbnail.so eating 100% of 1 cpu LibreOffice/Calligra preview disabled

Description Busico Mirto Silvio 2019-04-05 15:41:04 UTC

SUMMARY
After a reboot kde restore a session with dolphin. A thumbnail.so process uses 100% of one cpu

STEPS TO REPRODUCE
1. open dolphin and go to a folder that shows thumbnails (everything normal)
2. reboot
3. at login the restored dolphin launches thumbnail.so that eates a cpu and tumbnails are not shown

OBSERVED RESULT
thumbnail.so eates a cpu and dolphin don't show thumbnails

EXPECTED RESULT
noral cpu usage and dolphin shows thumbnails

SOFTWARE/OS VERSIONS

Linux/KDE Plasma: Kubuntu 18.04 
(available in About System)
KDE Plasma Version: 5.12.7
KDE Frameworks Version: 5.44.0
Qt Version: 5.9.5

ADDITIONAL INFORMATION

Comment 1 Busico Mirto Silvio 2019-04-11 16:45:01 UTC

Created attachment 119356 [details]
thumbnail.so eating 100% of 1 cpu

Comment 2 Nate Graham 2019-04-12 18:15:47 UTC

Any chance you can test with a version more recent than 17.12? Like 18.12 or the upcoming 19.04?

Comment 3 Busico Mirto Silvio 2019-04-13 17:29:16 UTC

Sorry, I don'understand which version are you referring.
If you mean the Kubuntu version, it is 18.04 (the last LTS) updated daily; I should prefer not to abandon an LTS
If you mean the KDE version (5.12.7) the only thing I can do (this is my home/office machine) without risk is to enable the Kubuntu backports ppa; but I don't know which Kde version will be installed.

Should I install this ppa?

Comment 4 Busico Mirto Silvio 2019-04-13 17:56:52 UTC

Additional informations:
Hardware:
  Santech c37 (https://www.santech.eu/ )
  processor Intel I7
  videocard Nvidia GEForce GTX
  video drivers nvidia-driver-390

The strange thing is that this error apperas only on the Santech notebook.
I have also an old HP Pavillion DV6 notebook which works correctly with the same software installed (Kubuntu 18.04 etc.)

The correctly working HP have:
  processor Intel I3
  videocard Nvidia GeForce GT 320M
  video drivers nvidia-340

Comment 5 Busico Mirto Silvio 2019-04-20 15:35:09 UTC

Created attachment 119529 [details]
LibreOffice/Calligra preview disabled

UPDATE:

disabling previews for LibreOffice and Calligra solves the problem.

Still infestigating to narrow the list of disabled previews

Comment 6 Nate Graham 2020-04-18 15:36:05 UTC


*** This bug has been marked as a duplicate of bug 404652 ***