Bug 456077 - Severe rendering artifacts in okular after update to ubuntu 22.04 from 20.04
Summary: Severe rendering artifacts in okular after update to ubuntu 22.04 from 20.04
Status: RESOLVED WORKSFORME
Alias: None
Product: okular
Classification: Applications
Component: PDF backend (show other bugs)
Version: 22.04.2
Platform: Other Linux
: NOR normal
Target Milestone: ---
Assignee: Okular developers
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2022-06-28 11:11 UTC by Sergio
Modified: 2022-07-29 04:35 UTC (History)
1 user (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:


Attachments
Screenshot with the rendering issue: figure is completely missing, part of the text is covered by an artifact (31.15 KB, image/png)
2022-06-28 11:11 UTC, Sergio
Details

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Description Sergio 2022-06-28 11:11:07 UTC
Created attachment 150224 [details]
Screenshot with the rendering issue: figure is completely missing, part of the text is covered by an artifact

SUMMARY

The version of okular shipped with ubuntu 22.04 produces severe rendering artifacts on a laptop with intel graphics (CometLake-U GT2 [UHD Graphics]). Seen using an X11 session.

It is unclear to me if the issue is with okular itself or with some libraries used by okular or in the graphics stack provided by ubuntu 22.04. Other applications do not have similar issues, though.

STEPS TO REPRODUCE
1. Open a PDF file 
2. Repeatedly press F5  (Reload).

OBSERVED RESULT

Note that the PDF is not always rendered in the same way. In multiple occasions parts of the page are missing, while other are covered in dark artifacts.

EXPECTED RESULT

The PDF is always rendered correctly and in the same way.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 
KDE Plasma Version: 5.24.5
KDE Frameworks Version: 5.95.0
Qt Version: 5.15.3
Comment 1 Albert Astals Cid 2022-06-29 22:59:57 UTC
Can we get that PDF file?
Comment 2 Bug Janitor Service 2022-07-14 04:37:06 UTC
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!
Comment 3 Bug Janitor Service 2022-07-29 04:35:56 UTC
This bug has been in NEEDSINFO status with no change for at least
30 days. The bug is now closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

Thank you for helping us make KDE software even better for everyone!