Bug 114485 - Widgets have transparent background
Summary: Widgets have transparent background
Status: RESOLVED NOTOURBUG
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: graphics stack (show other bugs)
Version:
(earliest affected)
5.4.3.2 release
Hardware: All All
: medium normal
Assignee: Not Assigned
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2017-12-15 10:01 UTC by David Edmundson
Modified: 2017-12-15 10:17 UTC (History)
0 users

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Screenshot of the problem (664.32 KB, image/png)
2017-12-15 10:01 UTC, David Edmundson 		Details
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Description David Edmundson 2017-12-15 10:01:57 UTC 
Created attachment 138458 [details]
Screenshot of the problem

Widgets rendered by the VCL toolkit don't have alpha on the backing store set properly. The screenshot explains it best. 
We also have it in the grey area behind the white document in writer.

Problem exists in multiple window managers. Turning off WM compositing masks the problem.

In libreoffice GL acceleration is off (and apitrace shows no calls)
VCL backend is GTK. Changing the VCL toolkit doesn't seem to make a difference.

It's fine on my main machine, this happens on a specific ARM64 laptop. Whereas other apps (Qt4, Qt5, GTK2, GTK3) all work fine. I assume it's something quirky with our X drivers that libreoffice isn't handling the same.

Happy to get any other information requested.

(reproducible with libreoffice 5.1 and 5.4)
Comment 1 David Edmundson 2017-12-15 10:17:54 UTC 
Sorry for the noise.