I'm tentatively reassigning this to the kernel. I reproduced this using VMware Workstation on Windows 11 (what a nightmare figuring out to download that product from Broadcom was!) It's nearly unusable. Everything feels very laggy and uses a lot more CPU than I'd expect.
The audio is super laggy, but so is gnome-shell. If you move a terminal window around for instance, it can easily start pegging the CPU. I see in the journal several messages about firmware bugs, but I'm unsure how serious they are. There's also kernel faults, some worringly from do_mmap, which makes me think it's a kernel problem. I also see kworker's dominating `top` output often, which is unusual. I tried bumping the number of CPUs and memory up, disabled / enabled 3D acceleration, disabling side-channel mitigations, and so forth, but nothing I did so far changed behaviour. Will see if I get better performance using 24.04 to confirm the regression. ** Package changed: pipewire (Ubuntu) => linux (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2127250 Title: Severe Performance Lag on 25.10 Live CD in VirtualBox and VMware Workstation on Windows 11 hosts To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2127250/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
