Proxmox 6 QEMU 4.0.0 Windows 7 Guest timing issue

WolfpacK

Member
Nov 11, 2018
10
0
21
43
Ran into this when trying to set up a Win 7 with GPU passthrough. QEMU 4.0.0 has a regression which seems to affect Windows 7 guests. This causes the timing of the guest to be sped up 5-10x.

The Red Hat bug report is here: https://bugzilla.redhat.com/show_bug.cgi?id=1704375

With additional details and some work arounds here:
https://bugs.launchpad.net/qemu/+bug/1826422
https://bbs.archlinux.org/viewtopic.php?id=246835

QEMU 4.1.0 appears to have been patched, and the patch was backported to 4.0.1.

If you are trying to run a Windows 7 guest and the clock seems to be going really really fast, this could be the problem.

Related thread: https://forum.proxmox.com/threads/vm-w-pcie-passthrough-not-working-after-upgrading-to-6-0.56021/
 
Last edited: