Bug#990868: lenovo T460 Shutdown Problem
- To: Faustin Lammler <faustin@fala.red>
- Cc: 990868@bugs.debian.org, Brian Falco <falcol64@protonmail.com>
- Subject: Bug#990868: lenovo T460 Shutdown Problem
- From: Bjørn Mork <bjorn@mork.no>
- Date: Wed, 25 Aug 2021 20:12:09 +0200
- Message-id: <[🔎] 8735qxl7gm.fsf@miraculix.mork.no>
- Reply-to: Bjørn Mork <bjorn@mork.no>, 990868@bugs.debian.org
- In-reply-to: <YSZedEqQn6Gt/vHw__9882.77107696689$1629904713$gmane$org@falared> (Faustin Lammler's message of "Wed, 25 Aug 2021 17:15:00 +0200")
- References: <gUw7bv3DNOn1cnsV3QfD9L3pK19Tc8Ehu-KckCHGfwtMko4ZZTmf-8Hu6l7Zr1uhM56RqAot3aeYXB9Q598BLunxTy1b8FOsldQBTzuGYWo=@protonmail.com> <YSZedEqQn6Gt/vHw__9882.77107696689$1629904713$gmane$org@falared> <gUw7bv3DNOn1cnsV3QfD9L3pK19Tc8Ehu-KckCHGfwtMko4ZZTmf-8Hu6l7Zr1uhM56RqAot3aeYXB9Q598BLunxTy1b8FOsldQBTzuGYWo=@protonmail.com>
Faustin Lammler <faustin@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
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