Bug 161479 - Presentation is not displayed in fullscreen mode when using GTK3 as VCLPLUGIN and the screen is fractional scaled
Summary: Presentation is not displayed in fullscreen mode when using GTK3 as VCLPLUGIN...
Status: NEW
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Impress (show other bugs)
Version:
(earliest affected)
24.2.2.2 release
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: Not Assigned
URL:
Whiteboard:
Keywords:
Depends on:
Blocks: Wayland GTK3
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Reported: 2024-06-09 04:06 UTC by liangrui.ch
Modified: 2024-06-14 07:16 UTC (History)
1 user (show)

See Also:
Crash report or crash signature:

Attachments
The screenshot of the issue (345.27 KB, image/jpeg)
2024-06-09 04:07 UTC, liangrui.ch 		Details
Recording of the issue (2.27 MB, video/mp4)
2024-06-14 01:59 UTC, Bastián Díaz 		Details
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Description liangrui.ch 2024-06-09 04:06:26 UTC 
Description:
Title

The presetation is only displayed in the small area of the screen when using GTK3 as VCLPLUGIN on KDE Wayland while the screen is fractional scaled.

I tried setting the scale factor to 100% or using Qt6 as VCLPLUGIN, the problem is gone.

Steps to Reproduce:
1. Using a monitor which the screen factor is fractional like 125%.
2. Open a impress file on KDE Wayland with GTK3 as VCLPLUGIN
3. Present

Actual Results:
The presentation is not displayed in fullscreen mode.

Expected Results:
The presentation is displayed in fullscreen mode.


Reproducible: Always


User Profile Reset: No

Additional Info:
Version: 24.2.3.2 (X86_64) / LibreOffice Community
Build ID: 420(Build:2)
CPU threads: 16; OS: Linux 6.9; UI render: default; VCL: gtk3
Locale: zh-CN (zh_CN.UTF-8); UI: zh-CN
24.2.3-3
Calc: threaded
Comment 1 liangrui.ch 2024-06-09 04:07:27 UTC 
Created attachment 194611 [details]
The screenshot of the issue
Comment 2 Bastián Díaz 2024-06-14 01:59:18 UTC 
Created attachment 194717 [details]
Recording of the issue

Hello. I can confirm the problem. The same thing happens to me related to fractional scaling using gnome/wayland. When returning to integers the problem doesn't persist. The same using the session in gnome/Xorg.

OS: Fedora 40 Workstation/Gnome 46/Wayland
LibO Version: 24.2.4.2 (X86_64)
Build ID: 420(Build:2)
CPU threads: 8; OS: Linux 6.8; UI render: default; VCL: gtk3
Locale: es-CL (es_CL.UTF-8); UI: es-ES
Calc: threaded

Steps to reproduce:
- Login gnome in Wayland
- Set a number on a fractional scale (Ex. 125%)
- Start Impress, select a template
- Start SlideShow

The issue is always reproducible under these conditions (Wayland and Fractional scaling)

Note: It should be noted that at least in Gnome, fractional scaling is experimental, however, a couple of minor versions earlier, LibO impress was working fine, it was only recently that I experienced these problems when starting a SlideShow.
Comment 3 Bastián Díaz 2024-06-14 02:03:45 UTC 
I'm sorry. I forgot to mention that I did restart the LibO profile and even used it in safe mode. The strange thing is that when doing so, for example restarting the profile and opening a presentation, it works (fullscreen slideshow), but only the first time, then the same thing happens as the video I uploaded before.

Cheers