Cannot start HVM qubes on System76 thelio (ryzen CPU)

User Support Hardware Issues
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1

i just installed Qubes 4.2.4 on a new PC, and I’m having trouble starting my qubes. PVH qubes start fine. But if i try to start any HVM qube (with or without PCI devices attached) i get this error:

Internal error: libxenlight failed to create new domain ‘sys-net’, see /var/log/libvirt/libxl/libxl-driver.log for details

In that file are two lines like this:

libxl_dm.c:2857:stubdom_xswait_ch: Domain 4:Stubdom 5 for 4 startup: startup timed out
libxl_create.c:1975:domcreate_devmodel_started: Domain 4:device model did not start: -9

From reading other threads, i have tried:

  • enable IOMMU in bios
  • disable SMT in bios
  • add iommu_inclusive_mapping=1 to /boot/efi/EFI/qubes/xen.cfg (file was previously not present)
  • manually correcting my system clock

Note unlike some other users who reported this issue, i have been completely unable to start any HVM qubes at all, not one single success.

2

Check your system time in BIOS:

3

Thank you so much! This did the trick