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Hi, I have a Wacom drawing tablet I'm trying to pass through to a QEMU VM with virt-manager. I can use the tablet just fine, pressure sensitivity works, detected by guest, etc, but the tablet is restricted to a subsection of the screen, not the whole screen. Guest is Fedora 43 with KDE Plasma.
I believe this is because the virtual monitor is reporting itself as having a smaller resolution. I changed the settings in software to be 1920×1080 (the size of my actual monitor) and it displays correctly, but the tablet doesn't seem to be able to "reach" the extra space.
Is there some way of increasing the size virt-manager reports the virtual monitor size as?
Also, another problem: while the tablet works, I can't see a cursor while using it indicating the current position of the pen. The tablet doesn't have a screen so I'm normally reliant on a cursor to be able to draw with it. I think this is probably something I would be setting in software in the guest, maybe there's a setting for it in Plasma? If it's a Plasma-specific issue I don't mind using GNOME or something else.
Tested with Xournal++ and Krita, both of which work fine with the tablet on the host and don't have either aforementioned problem.
Anyone been able to successfully passthrough a drawing tablet to a virt-manager QEMU guest?
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Current solution is to not passthrough the tablet and just use it on the host. This allows me to access the entire screen, and also shows a cursor over the current position of the stylus, however it means I don't get pressure sensitivity on the guest.
virt-manager seems to have a Tablet option in the hardware you can add to a VM, but from looking it up, this seems to be a virtual tablet for certain mouse input behaviours rather than related to physical graphics tablets.
Any way to actually passthrough my tablet to the guest would be appreciated!
Last edited by fopdudel (2026-01-06 15:15:43)
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