Faustin Lammler <faus...@fala.red> writes: > Hi! > I seem to have the same problem on my T460s and it is impossible to > suspend the laptop (lid close or systemctl suspend). > > As far as I can remember, the problem appeared with kernel 5 branch (bpo > on buster). > > At that time I did not wanted to open a bug report because I was not > sure of my installation (dist-upgrade from buster, plus lots of bpo > kernel installation and test) and I had found a workaround for the > suspend problem, using those commands after reboot: > | echo reboot >/sys/power/disk > | echo disk >/sys/power/state > > Now I have a clean Debian 11 installation and both suspend and poweroff > does not work anymore.
This sounds like https://bugs.debian.org/949020 Short version: Disable TPM 2.0 (select 1.2) i BIOS, or disable IOMMU by booting with intel_iommu=off on the command line. Bjørn
