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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-05-30 16:52:07 +0200 |
|---|---|---|
| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-05-30 16:52:17 +0200 |
| commit | 9260319e7411ff8281700a532caa436f40120ec4 (patch) | |
| tree | 2f6bfe5f3458dd49d328d3a9eb508595450adec0 /gitlab/issues_text/target_missing/host_missing/accel_missing/1596 | |
| parent | 225caa38269323af1bfc2daadff5ec8bd930747f (diff) | |
| download | qemu-analysis-9260319e7411ff8281700a532caa436f40120ec4.tar.gz qemu-analysis-9260319e7411ff8281700a532caa436f40120ec4.zip | |
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Diffstat (limited to 'gitlab/issues_text/target_missing/host_missing/accel_missing/1596')
| -rw-r--r-- | gitlab/issues_text/target_missing/host_missing/accel_missing/1596 | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/gitlab/issues_text/target_missing/host_missing/accel_missing/1596 b/gitlab/issues_text/target_missing/host_missing/accel_missing/1596 new file mode 100644 index 000000000..31c2c3665 --- /dev/null +++ b/gitlab/issues_text/target_missing/host_missing/accel_missing/1596 @@ -0,0 +1,20 @@ +VNC console with 4K resolutions is cut off on the right side and mouse coordinates are offset (or horizontal res greater than 2600-3000 pixels) +Description of problem: +For some reason when connecting to the VNC console of a QEMU VM, when you use a resolution that has its horizontal size of about 3000 pixels or more, it gets cut off by about 1/4 of the screen from the right, and the mouse position is offset by that value towards the left. See image for explanation: + + +Steps to reproduce: +1. Create a Fedora 37 VM +2. Use `virtio-vga-gl` and `egl-headless` +3. Set the resolution to 4K (3840x2160) or anything with the horizontal resolution greater than 3000 pixels +4. Use Windows to connect to the VNC console. Issue happens with TightVNC Viewer and RealVNC Viewer +Additional information: +I also tried `-device virtio-vga-gl,edid=off,xres=3840,yres=2160`. Same result, but `edid=off` helps to make 2560x1600 appear, making it bearable. + +This also happens with Wayland and Xorg. + +Please note that while it's possible to use Gnome's Screen Sharing (RDP/VNC) options, as well as NoMachine or other options, this is an undesirable behavior in QEMU's VNC server/console that should be fixed (and can, the VNC protocol perfectly supports 4K without issues) + +Not to mention that, at least in my use case, the VNC console is faster than the alternatives, even SPICE (connecting from Windows is barely unusable at 4K res - it's a bliss from Linux. Both cases from a remote machine in the same LAN, but that is unrelated to this bug). + +I would happily try different use cases to try to help nail down this bug :smile: |