LibreOffice Writer using Integrated GPU instead of Dedicated after monitor change

[Remodeler0679]

I recently updated my monitor layout. My laptop is now closed (laptop monitor off), while I have a dual monitor set-up: one 2K (1440p) screen and one vertical 1080p screen, respectively 165 and 144hz. Since then, my LibreOffice Writer has been rather laggy, especially noticeable when scrolling. I can now see, based on this topic (Libre office uses wrong GPU -> lagging experience. Fix?), that LibreOffice is using GPU 0 instead of GPU1, which might cause issues. (I could not find any discussions in the bug forum about this, but I may have missed it. The forum is not so easy to navigate for a newbie.)

Here are my installation details:

Version: 7.6.4.1 (X86_64) / LibreOffice Community
Build ID: e19e193f88cd6c0525a17fb7a176ed8e6a3e2aa1
CPU threads: 8; OS: Windows 10.0 Build 22631; UI render: Skia/Vulkan; VCL: win
Locale: en-GB (nl_NL); UI: en-GB
Calc: threaded

I tried to disable Skia, but it did not necessarily make things work more smoothly. Scrolling was still really jagged. No crazy images or anything in the document, only 12 pages, with Zotero footnotes. Everything worked fine with this set-up before changing my monitor layout.

Many thanks for any help!

[mariosv]

Try with:
Right-click on Star icon
Select Device Manager.
Select Display adapters.
Disable the device not to use.

[Remodeler0679]

Thank you, this has fixed the issue. Still would rather make changes on a per-app basis than for the entire workspace just because LibreOffice cannot utilise the correct GPU…

[EarnestAl]

In the NVidia Control Panel, I can set soffice.bin to use High Performance NVidia Processor by clicking the Add button and navigating to soffice.bin, then selecting the appropriate processor. I can’t see any difference though.

Or, in Tools > Options > LibreOffice > View just tick the box Force Skia software rendering to get maybe better performance from the integrated graphics.

[Remodeler0679]

I have tried this for a while, but I got quite a few issues from disabling the integrated graphic card. Not sure if this is the best solution after all.

[LuckyAbsoluter]

Bug Report: Integrated GPU Usage Issue in LibreOffice

Summary:

LibreOffice is using the Integrated GPU (iGPU) instead of the Dedicated GPU (dGPU), even when the dGPU is set as the preferred option. This results in performance issues, noticeable slowdowns, and stuttering. The iGPU should always be at 0% usage, so this issue is easily identifiable through the Windows Task Manager where the iGPU shows usage activity.

Steps to Reproduce:

1. Open a .csv file from Windows File Explorer:

• Double-click a .csv file to open it in LibreOffice.
• scalc.exe does not start; instead, soffice.exe starts and runs soffice.bin as a subprocess.
• The iGPU shows usage activity.

2. Manually start LibreOffice:

• Manually start soffice.exe and open a .csv file.
• The iGPU usage issue persists.

3. Alternative method using scalc.exe:

• Manually start scalc.exe.
• soffice.exe starts as a subprocess, and then soffice.bin starts as a subprocess of soffice.exe.
• In this case, the iGPU is not used.

Expected Behavior:

LibreOffice should consistently use the dGPU for all operations, ensuring smooth performance, and the iGPU should always show 0% usage.

Actual Behavior:

LibreOffice defaults to using the iGPU when started in certain ways, leading to performance degradation.

Workaround:

Applying the solution provided by EarnestAl resolves the issue:

1. Navigate to Tools > Options > LibreOffice > View.
2. Check the box labeled “Force Skia software rendering”.

After applying this fix, soffice.exe no longer uses the iGPU, improving performance.

System Information:

• Operating System: Windows
• LibreOffice Version: 24.2.4.2
• Graphics Card: Nvidia [Specify Model]
• LibreOffice Installation Path: C:\Program Files\LibreOffice\program\soffice.exe

Conclusion:

This bug causes unnecessary use of the iGPU, leading to performance issues in LibreOffice. The workaround of enforcing software rendering with Skia effectively resolves the problem. Further investigation and a permanent fix in future updates would be beneficial for all users encountering this issue.

[Wanderer]

Wrong place for a bug-report:

Bugs should be submitted directly to Bugzilla
Log in to Bugzilla

Above is cited from here:

This is the guide - How to use the Ask site?

Ask a question To do this, click on “+ New topic” in the top bar. [EN Button New Topic] The “Create a new topic” dialog appears. [EN Dialog Create a new Topic] In the “Type title, or paste a link here” line, enter as short a title as possible for the question. In any case, avoid entering the entire content of your question in the “Title” line. If you create your question in the “English” category, “English” will appear automatically. To the right of “Select at least 1 item”, you can sel…