Ubuntu
linux package

  1. Bug #1973434
  2. Comment #3

Comment 3 for bug 1973434

Revision history for this message
Matthew Ruffell (mruffell) wrote :

Hi Henning,

Just a thought, could you try booting with IOMMU disabled?

Edit /etc/default/grub, and append "intel_iommu=off" to GRUB_CMDLINE_LINUX_DEFAULT. Then save, and run "sudo update-grub" and reboot.

Between 21.10 and 22.04 we enabled CONFIG_INTEL_IOMMU_DEFAULT_ON=y, and it has caused all sorts of odd issues, including performance related ones, so its worth a shot.

We will be reverting the change to CONFIG_INTEL_IOMMU_DEFAULT_ON, and turning it off again in a kernel update in the near future.

If "intel_iommu=off" doesn't help, then a make oldconfig with the 22.04 config and 5.17.7 would be interesting to see.

Thanks,
Matthew