Public bug reported:
Description:
Since the update to kernel 6.8.0-101-generic, my system fails to resume from
sleep (suspend-to-RAM). This setup has worked perfectly for several years on
this hardware until this specific update.
Symptoms:
The system enters sleep mode (indicated by a blinking power LED).
Upon pressing a key to wake it up, the LED stops blinking for a moment
(attempting to resume), but then either turns off or starts blinking
again without the system becoming responsive.
The screen remains black, and the only way to recover is a hard power-
off/reset.
Regression:
Works: 6.8.0-100-generic
Fails: 6.8.0-101-generic
Log Snippet (syslog during failed resume):
The logs show null bytes (^@^@^@), indicating a hard freeze before or during
the resume process:
2026-03-04T15:35:56.074767+01:00 Nilar systemd[1]: Starting
syncthing-resume.service...
2026-03-04T15:35:56.076031+01:00 Nilar systemd[1]: Starting
systemd-suspend.service - System Suspend...
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@
[New Boot Starts Here]
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: kernel-bug regression suspend-resume
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https://bugs.launchpad.net/bugs/2143252
Title:
[Regression] Suspend-to-RAM fails on kernel 6.8.0-101-generic (worked
in 6.8.0-100)
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