Bug 153007 - LibreOffice 7.4.3.2 very slow with VCL GTK3
Summary: LibreOffice 7.4.3.2 very slow with VCL GTK3
Status: RESOLVED DUPLICATE of bug 154602
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: LibreOffice (show other bugs)
Version:
(earliest affected)
7.4.3.2 release
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: Not Assigned
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2023-01-13 16:37 UTC by Gerald
Modified: 2023-05-18 12:35 UTC (History)
3 users (show)

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Crash report or crash signature:


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Description Gerald 2023-01-13 16:37:57 UTC
Description:
With SAL_USE_VCLPLUGIN=gen libreoffice, LibreOffice Writer runs super fast without any issue. 

Steps to Reproduce:
1.Run LibreOffice on PopOS 22.04 (Gnome environment; GTK3)
2.Bigger documents with many tables can hardly be edited as keyboard input becomes extremely slow.
3.It must be related to VLC=GTK3

Actual Results:
LO Writer is almost unusable with GTK3. Same happens on my system with kf5. It may be related to Nvdida driver (version 525.60.11)

Expected Results:
When I run LO with SAL_USE_VCLPLUGIN=gen libreoffice, it works without any issue.


Reproducible: Always


User Profile Reset: Yes

Additional Info:
Version: 7.4.3.2 / LibreOffice Community
Build ID: 1048a8393ae2eeec98dff31b5c133c5f1d08b890
CPU threads: 16; OS: Linux 6.0; UI render: default; VCL: gtk3
Locale: de-DE (de_DE.UTF-8); UI: de-DE
Flatpak
Calc: CL
Comment 1 Julien Nabet 2023-01-13 20:35:02 UTC
Do you have any accessibility tool enabled? If yes, could you disable them just for the test?
Indeed, contrary to gen rendering, gtk3 and kf5 use accessibility part.

It could also be due to Skia or graphic driver, could you apply advice from the link https://wiki.documentfoundation.org/QA/FirstSteps#Graphics-related_issues_.28_Skia_.29 ?
Comment 2 Gerald 2023-01-14 08:33:25 UTC
(In reply to Julien Nabet from comment #1)
> Do you have any accessibility tool enabled? If yes, could you disable them
> just for the test?
> Indeed, contrary to gen rendering, gtk3 and kf5 use accessibility part.
> 
> It could also be due to Skia or graphic driver, could you apply advice from
> the link
> https://wiki.documentfoundation.org/QA/FirstSteps#Graphics-related_issues_.
> 28_Skia_.29 ?

Thanks a lot for your answer. I have disabled all accessibility tools, but the issue still occurs. Regarding the graphic driver, I get "UI-Render: Standard" when accessing the "About info". I have also tried to disable "HiDpi daemon" of Pop Os, but there is no difference -  the lagging is still there. I use a 4k screen, maybe it is related to that.
Comment 3 Julien Nabet 2023-01-14 10:21:01 UTC
Thank you for the feedback, let's put it back to UNCONFIRMED since I don't have more questions.
Comment 4 Stéphane Guillou (stragu) 2023-01-16 09:03:26 UTC
As Pop! OS is based on Ubuntu, do you use Wayland with GNOME?
You can see if LibreOffice is a Wayland window with: https://bugs.documentfoundation.org/show_bug.cgi?id=100156#c1

And do you use a scaling factor for your display or are you at 100%?
Comment 5 Telesto 2023-05-18 12:35:30 UTC
Cause is likely the 4k screen.

*** This bug has been marked as a duplicate of bug 154602 ***