Bug#1130605: I needed to disable systemd's user-slice freezing

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From	"Sanjoy Mahajan" <sanjoy@mit.edu>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#1130605: I needed to disable systemd's user-slice freezing
Date	Sat, 14 Mar 2026 11:30:01 +0100
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The following solution, or workaround, works for me (found on
<https://bbs.archlinux.org/viewtopic.php?id=296954>).  I made a file
/etc/systemd/system/systemd-suspend.service.d/override.conf containing
these two lines:

[Service]
Environment="SYSTEMD_SLEEP_FREEZE_USER_SESSIONS=false"

(I did so via "systemctl edit systemd-suspend.service")

Now suspend works reliably.  Apparently this new behavior, of freezing
the user slice, was introduced in systemd 256, so I must have been
running an earlier version for a while.  Anyway, now I am running
systemd 260~rc4-1 (kernel 6.19.6+deb14-amd64).

This solution was proposed first to solve suspend problems with properietary
NVIDIA drivers.  However, I had similar suspend problems without any
proprietary drivers (the laptop uses intel graphics), and the same
solution worked for me as for the NVIDIA users.

-Sanjoy

P.S. A few sites describe the new configuration slightly incorrectly and
give the magic line simply as

SYSTEMD_SLEEP_FREEZE_USER_SESSIONS=false

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Bug#1130605: suspend hangs with all kernels that I've tried "Sanjoy Mahajan" <sanjoy@mit.edu> - 2026-03-14 08:40 +0100
  Bug#1130605: I needed to disable systemd's user-slice freezing "Sanjoy Mahajan" <sanjoy@mit.edu> - 2026-03-14 11:30 +0100

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