## Update (2026-09-20): failure rate has jumped — 5 hangs in 8 days, 0 in the previous 4 weeks; two more silent freezes on plain s2idle suspend entry
Two more hangs on 2026-09-19, both on a plain suspend (no hibernate involved in the failing step), same signature as before: journal ends right after "PM: suspend entry (s2idle)", keyboard backlight stays lit, no reaction to any key/power short-press, hard power-off required. Next boot: dirty EFI partition, systemd-journald "corrupted or uncleanly shut down", orphan inode cleanup. - 10:12:39 — second suspend request issued 6 s after a very short first suspend (woken immediately by AC plug-in). It was a suspend-then-hibernate request (default 2h delay); the machine froze on s2idle entry itself, not at the RTC wake. - 20:42:03 — suspend requested 16 s after a successful 1h42 suspend/resume. Machine stayed frozen ~9.5 h until a forced reboot. ## Statistics (journal analysis, 450 suspend/hibernate entry/exit events since 2026-08-15) - Suspend/hibernate entries issued < 60 s after a resume: 104, of which 2 failed (both on 2026-09-19). - All other entries: 123, of which 3 failed (2026-09-12 hibernate, 2026-09-14 suspend, 2026-09-16 hibernate). - So a quick re-suspend after a resume is NOT the trigger (~2% failure rate in both groups). - However, there were **zero failures from 2026-08-15 to 2026-09-11, then 5 failures between 2026-09-12 and 2026-09-19** (roughly one per day). They happen on 7.0.0-27 and 7.0.0-31, before and after the BIOS update to 1.29.0. No firmware, graphics stack or systemd package was updated before the first failure of the series (packages updated 08-09/09: libc, perl, gnupg, curl...; 13/09: kernel 7.0.0-31, wireless-regdb). I cannot find what changed around 2026-09-12. The failures leave no usable trace (kernel is frozen before it can log; last minutes of journal are lost on power-off), so I cannot narrow the cause further from logs alone. Happy to test patches/parameters or run a debug kernel if useful (netconsole/serial capture is possible if requested). ## Hardware/software (unchanged) Dell Inspiron 14 5425, AMD Ryzen 7 5825U, AMD Barcelo iGPU (amdgpu), BIOS 1.29.0, kernel 7.0.0-31-generic, Ubuntu, KDE Plasma 6.5, Wayland. `HibernateMode=shutdown` workaround applied since 2026-09-16. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2161312 Title: System hangs on suspend (s2idle) with kernel 7.0.0-28-generic, works fine on 7.0.0-27 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2161312/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
