Bug 140388 - Document text becomes blurry when moving Writer window to a HiDPI 150% scaled display on GTK + Wayland
Summary: Document text becomes blurry when moving Writer window to a HiDPI 150% scaled...
Status: NEW
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Writer (show other bugs)
Version:
(earliest affected)
7.0.4.2 release
Hardware: All Linux (All)
: medium normal
Assignee: Not Assigned
URL:
Whiteboard:
Keywords:
Depends on:
Blocks: HiDPI Wayland GTK3 Multimonitor
  Show dependency tree / graph
 
Reported: 2021-02-13 10:26 UTC by Jan Vlug
Modified: 2023-03-28 18:38 UTC (History)
5 users (show)

See Also:
Crash report or crash signature:

Attachments
Screenshot displaying a window with blurry text and a window with sharp text (1.93 MB, image/png)
2021-02-13 10:34 UTC, Jan Vlug 		Details
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Description Jan Vlug 2021-02-13 10:26:45 UTC 
Description:
Text in LibreOffice is is inconsistently sharp or blurred on my Fedora Linux system running GNOME Wayland with two displays. One regular display and one HiDPI display, zoomed to 150%.
This issue can be manifest at the same time in two different documents using the same font, see screenshot.
Resizing the window with the blurry text makes the text sharp again.

Steps to Reproduce:
1. Move a Writer window with text in it from the HiDPI display to the normal display.
2. Maximize this window in the normal display.
3. Drag the window to the HiDPI display, the text becomes blurry.
4. Resize the window on the HiDPI display, the text becomes sharp.

Actual Results:
After moving the Writer window to a 150% scaled HiDPI display in GNOME Wayland the text rendering is burry.

Expected Results:
The text should always be rendered sharply.


Reproducible: Always


User Profile Reset: No


OpenGL enabled: Yes

Additional Info:
libreoffice-writer.x86_64    1:7.0.4.2-7.fc33
libwayland                   1.18.0.2.fc33
Fedora 33, fully up to date

 # inxi -G
Graphics:  Device-1: Intel Crystal Well Integrated Graphics driver: i915 v: kernel 
           Device-2: Acer BisonCam NB Pro type: USB driver: uvcvideo 
           Display: server: Fedora Project X.org 1.20.10 driver: modesetting unloaded: fbdev,vesa resolution: 
           1: 2560x1440~30Hz 2: 1920x1080~60Hz 
           OpenGL: renderer: Mesa DRI Intel Iris Pro Graphics P5200 (HSW GT3) v: 4.5 Mesa 20.3.4 

$ loginctl show-session 36   | grep -i type
Type=wayland
Comment 1 Jan Vlug 2021-02-13 10:34:23 UTC 
Created attachment 169712 [details]
Screenshot displaying a window with blurry text and a window with sharp text
Comment 2 Roman Kuznetsov 2021-05-22 18:24:03 UTC 
Please update your LibreOffice to latest stable version like 7.1.3 and try retest the problem
Comment 3 Jan Vlug 2021-05-22 20:53:13 UTC 
This still happens in LibreOffice 7.1.3.2 on a fully up-to-date Fedora 34.
Comment 4 QA Administrators 2021-05-23 04:20:54 UTC Comment hidden (obsolete)
Comment 5 shaform 2022-06-11 02:25:39 UTC 
I am seeing the same problem using LibreOffice 7.3.3.2 on Ubuntu 22.04 using wayland.

The texts become blurry when I move the window to a HiDPI display with 200% scale.

The texts become sharp when I move the window to a normal display with 100% scale.
Comment 6 Dieter 2022-06-11 03:33:03 UTC 
(In reply to shaform from comment #5)
> I am seeing the same problem using LibreOffice 7.3.3.2 on Ubuntu 22.04 using
> wayland.

=> NEW