Bug 143228 - Content area flashes when moving the mouse
Summary: Content area flashes when moving the mouse
Status: RESOLVED WORKSFORME
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: LibreOffice (show other bugs)
Version:
(earliest affected)
7.1.2.2 release
Hardware: x86-64 (AMD64) Linux (All)
: lowest minor
Assignee: Not Assigned
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2021-07-07 07:59 UTC by Hans van Buitenen
Modified: 2023-01-20 19:30 UTC (History)
2 users (show)

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Description Hans van Buitenen 2021-07-07 07:59:25 UTC 
Description:
Content area's like Recent document or the style list are flashing with a high frequency, approx 20 cycles/sec.
It seems at random but i think that moving the mouse, or small accidental mouse movements cause the flashing.
It seems that each input event causes a display update, while this is not necessary.
Ths issue persistes now for several Libre office updates.


Steps to Reproduce:
1. Go to recent ducument
2. Move the mouse
3.

Actual Results:
The content area flashes with a high frequncy.

Expected Results:
After returning back to the edit area, and closing the style list, it performs normal.


Reproducible: Always


User Profile Reset: No


OpenGL enabled: Yes

Additional Info:
[Information automatically included from LibreOffice]
Locale: en-US
Module: StartModule
[Information guessed from browser]
OS: Linux (All)
OS is 64bit: yes
I'm running Debian 9.13
Comment 1 Buovjaga 2021-07-19 17:41:52 UTC 
Please paste into a comment the version information from LibreOffice's Help - About dialog.
Comment 2 Hans van Buitenen 2021-07-19 19:45:05 UTC 
Version: 7.1.2.2 / LibreOffice Community
Build ID: 8a45595d069ef5570103caea1b71cc9d82b2aae4
CPU threads: 2; OS: Linux 4.9; UI render: default; VCL: gtk3
Locale: en-US (en_US.UTF-8); UI: en-US
Calc: threaded
Comment 3 QA Administrators 2021-07-20 03:38:48 UTC Comment hidden (obsolete)
Comment 4 Dmitriy Siushkin 2021-07-22 08:36:24 UTC 
no repro in 

Version: 7.3.0.0.alpha0+ (x64) / LibreOffice Community
Build ID: c5ca46e75e28ba4245d8544ca53c71fea87d1bbd
CPU threads: 4; OS: Windows 10.0 Build 19041; UI render: Skia/Raster; VCL: win
Locale: ru-RU (ru_RU); UI: en-US
Calc: CL
Comment 5 raal 2021-12-06 19:54:07 UTC 
No repro with Version: 7.4.0.0.alpha0+ / LibreOffice Community
Build ID: ba7db98cca3d8516697c94ef0d6af27db9e1655e
CPU threads: 4; OS: Linux 5.11; UI render: default; VCL: gtk3
Locale: cs-CZ (cs_CZ.UTF-8); UI: en-US
Calc: threaded

Is it still the issue in newer version?
Comment 6 Hans van Buitenen 2021-12-08 18:56:34 UTC 
Just installed 7.2.4.1
Yes it still does. I don't know if it is exactly the same but the flashing 
seems to be triggered by mouse movements.
If i do't do anything in the office window, it stops, with a 1..2 sec. lag.
Comment 7 Timur 2022-09-29 08:29:56 UTC 
Also no repro. This makes it specific to your system. You may attach a screencast. 
Otherwise, bug cannot be confirmed, unless it's reproducible for others under some condition.
Comment 8 Timur 2022-09-29 08:30:46 UTC 
User Profile Reset: indicates you should try to rename or delete LO user profile folder.
Comment 9 Hans van Buitenen 2023-01-20 19:25:09 UTC 
Recently i upgraded Linux debian from 9 to 10.
Not reinstall, but upgrade so everything else remained the same.

now the issue is gone both with Libre Office 7.2 and 7.3 (which did not start on Debian 9, but now it does)

so i now guess it has something to do with the combination of how Libre Office is updating the screen and the video driver which is the one Debian delivers for NVidia.

I guess this closes the issue.