Bug 426419

Summary:	KDevelop crashes every few minutes when second screen + global scale factor
Product:	[Applications] kdevelop	Reporter:	Lukas Sommer <sommerluk>
Component:	general	Assignee:	kdevelop-bugs-null
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	sommerluk
Priority:	NOR
Version First Reported In:	5.5.0
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	backtrace.txt

Description Lukas Sommer 2020-09-11 17:53:18 UTC

SUMMARY

KDevelop crashes every few minutes or even every few seconds if all the following conditions are met:

STEPS TO REPRODUCE
1. A second screen is connected to the laptop (for me: right screen within the screen layout).
2. The global screen scale factor is bigger than 1 (for me: 1.25).
3. The KDevelop windows is running on the second screen.

OBSERVED RESULT

KDevelop crashes every few minutes or even every few seconds if all the following conditions are met:

EXPECTED RESULT

KDevelop does not crash.

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: Ubuntu 20.04
(available in About System)
KDE Plasma Version: 5.18.5
KDE Frameworks Version: 5.68.0
Qt Version: 5.12.8

ADDITIONAL INFORMATION

There is no crash if at least one of the conditions is not met.

Comment 1 Milian Wolff 2020-09-11 19:16:33 UTC

can you try any release after 5.5.0 please and see if the problem persists? I fixed a problem (bug 417151) for 5.5.1 and above that sounds related?

also, please attach a backtrace for the crashes you are encountering

Comment 2 Lukas Sommer 2020-09-14 09:46:00 UTC

Created attachment 131627 [details]
backtrace.txt

The requested backtrace. (Unfortunately I didn't find the debug symbol package, so it's not really detailed.)

Comment 3 Lukas Sommer 2020-09-14 09:52:31 UTC

Hi Milian.

Thanks for the quick reply. I could't test KDevelop 5.5.1 due to lack of package. But I think you are right: This is a duplicate bug 417151 because indeed it occurs exactly when hovering with the mouse over a part of source code that should pop up a tool tip, just as described in bug 417151.

Should we close this one as duplicate?

Comment 4 Milian Wolff 2020-09-14 10:04:00 UTC

yes, the backtrace is enough to show that this is a duplicate

please update, note that you could just use an appimage for 5.6 e.g. to get a fix for this

*** This bug has been marked as a duplicate of bug 417151 ***