This is affecting me as well. The Xorg stack trace is nearly identical in my case.
I am using Kubuntu 23.10 as Host and 22.04 LTS as guest. It is quite annoying as I use the VM for work and this kind of crash happens randomly sometimes 5 times per day. I noticed it happens every time when I either start typing text or click something inside the Guest. If the thing I clicked was a text field, the mouse pointer is stuck as the "I" symbol but I can still move it around for a few seconds until Xorg dies completely. I use the VM in a multi-monitor setup with 3 screens. This is my Video QXL config: <video> <model type="qxl" ram="262144" vram="131072" vgamem="131072" heads="3" primary="yes"/> <alias name="video0"/> <address type="pci" domain="0x0000" bus="0x00" slot="0x01" function="0x0"/> </video> I used the exact same configuration and Guest VM on my "old" pc, that was running Kubuntu 22.04 LTS as host as well as guest, and I never had this problem there. My current pc has an integrated AMD Radeon 780m (does not matter if I used AMD's drivers or default ones) and the previous one has integrated Intel Xe G7 80EUs. All my software is regularly updated to latest available versions. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-qxl in Ubuntu. https://bugs.launchpad.net/bugs/1980889 Title: X crashes with qxl(0): error doing QXL_ALLOC To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-qxl/+bug/1980889/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp