Subject: bug#78421: Occasional crashes when resuming from software suspend

From: Ludovic Courtès <[email-masked]>
Date: Wed, 14 May 2025 10:34:59 +0200

Hello,

With Linux-libre 6.14.5-gnu (commit
300d29e69988caf23684f08effa51f621c7ec083), my laptop occasionally
crashes when resuming from software suspend: blank screen, does not
answer to pings, cannot switch ttys, etc. and hard shutdown is the only
way out.  /var/log/messages shows software suspend but does not contain
a single line corresponding to resuming:

--8<---------------cut here---------------start------------->8---
2025-05-13 20:24:40 localhost elogind[285]: Power key pressed short.
2025-05-13 20:24:40 localhost elogind[285]: Suspending...
2025-05-13 20:24:40 localhost NetworkManager[323]: <info>  [1747160680.7195] manager: sleep: sleep requested (sleeping: no  enabled: yes)
2025-05-13 20:24:40 localhost NetworkManager[323]: <info>  [1747160680.7196] manager: NetworkManager state is now ASLEEP
2025-05-13 20:24:40 localhost e-suspend[24819]: Performing sleep operation 'suspend'...
2025-05-13 20:24:40 localhost linux: [88210.153645] PM: suspend entry (deep)
2025-05-13 23:07:22 localhost linux: [    0.000000] Linux version 6.14.5-gnu (guix@guix) (gcc (GCC) 11.4.0, GNU ld (GNU Binutils) 2.41) #1 SMP PREEMPT_DYNAMIC 1
--8<---------------cut here---------------end--------------->8---

This was fine with 6.14.4 (commit
3cdf7bec6b1caa808a7b498ea8ca4596ab1edfeb) and earlier versions.

Ludo’.