Bug 481811 - Cursor size only depend on scaling and seem to scale 2x the scaling factor in VirtualBox
Summary: Cursor size only depend on scaling and seem to scale 2x the scaling factor in...
Status: RESOLVED NOT A BUG
Alias: None
Product: kwin
Classification: Plasma
Component: general (other bugs)
Version First Reported In: 5.93.0
Platform: Other Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords: qt6
Depends on:
Blocks:
 
Reported: 2024-02-25 14:32 UTC by postix
Modified: 2024-02-29 11:51 UTC (History)
1 user (show)

See Also:
Latest Commit:
Version Fixed/Implemented In:
Sentry Crash Report:

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Screenshot (380.48 KB, image/png)
2024-02-25 14:32 UTC, postix 		Details
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Description postix 2024-02-25 14:32:03 UTC 
Created attachment 166090 [details]
Screenshot

SUMMARY

Independent of the cursor size settings, the cursor always has a fixed size:
* at 1.0 scaling it scales correct
* at 2.0 it seems to scale like 4x the size of the cursor with 1.0 scaling

Please see the screenshot.

SOFTWARE/OS VERSIONS
Operating System: Fedora-KDE-Live-x86_64-Rawhide-20240225.n.0.iso
KDE Plasma Version: 6.0.0
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.2
Kernel Version: 6.8.0-rc5
Graphics Platform: Wayland
Graphics Processor: llvmpipe
VirtualBox 7.0 on openSUSE TW
Comment 1 postix 2024-02-25 14:32:51 UTC 
Interestingly, when I take a screenshot with Spectacle in the virtual machine, the cursor scales fine. The screenshot above is obviously taken from the host system.
Comment 2 postix 2024-02-25 14:35:37 UTC 
FWIW I see the following errors in journalctl:

kwin_wayland_wrapper[4444]: libEGL warning: pci id for fd 14: 80ee:beef, driver (null)
kwin_wayland_wrapper[4444]: libEGL warning: MESA-LOADER: failed to open vboxvideo: /usr/lib64/dri/vboxvideo_dri.so: cannot open shared object file: No such file or directory (search paths /usr/lib64/dri, suffix _dri)
kwin_wayland_wrapper[4444]: MESA: error: ZINK: failed to choose pdev
kwin_wayland_wrapper[4444]: libEGL warning: egl: failed to create dri2 screen

Not sure if this is relevant.
Comment 3 Vlad Zahorodnii 2024-02-26 09:13:53 UTC 
This sounds like a bug in virtualbox
Comment 4 postix 2024-02-29 11:51:01 UTC 
(In reply to Vlad Zahorodnii from comment #3)
> This sounds like a bug in virtualbox