Bug#962003: *ERROR* Failed to wait for idle; VT'd may hang
On 17/07/2021 15.04, Simon Josefsson wrote:
> Hi. I just installed Debian bullseye daily today (linux-image-amd64
> version 5.10.40-1), and ran into this problem on a Lenovo X201. The
> message repeats every other second or so. I don't notice any other
I believe, the messages/behaviour was slowing the system or so,
not just giving messages, at least I have seen this on X201T.
The workaround is to boot with kernel parameter intel_iommu=igfx_off
e.g. set in /etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT="intel_iommu=igfx_off"
and then re-run sudo update-grub and reboot.
[I tend to remove "quiet splash" but you could of course have
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash intel_iommu=igfx_off"
Playing the Git-Bisect game would be helpful if somebody could
find *exactly* where the problem was introduced ......
--Simon
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