Xubuntu 24.04 with Ubuntu Studio packages: Linux dlm-tb 6.8.0-60-lowlatency #63.1-Ubuntu SMP PREEMPT_DYNAMIC Tue Apr 22 18:37:00 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux
About 1 or 2 times in a hundred, I close the laptop lid, and then a couple hours later, find that the computer is wide awake, getting warm and chewing up battery, just physically closed.
Since it works 98-99% of the time, I don't think it's the same type of system configuration problem as in most similar issue reports. (Power manager is definitely set to Suspend when closing the lid.)
What else to check? Thanks.
Just happened again -- syslog has:
2025-06-24T17:22:48.112391+08:00 dlm-tb NetworkManager[1208]: <info> [1750756968.1120] manager: sleep: sleep requested (sleeping: no enabled: yes)
... snip...
2025-06-24T17:22:48.325933+08:00 dlm-tb NetworkManager[1208]: <info> [1750756968.3256] device (wlp0s20f3): state change: disconnected -> unmanaged (reason 'sleeping', sys-iface-state: 'managed')
2025-06-24T17:22:48.344607+08:00 dlm-tb wpa_supplicant[1213]: p2p-dev-wlp0s20: CTRL-EVENT-DSCP-POLICY clear_all
2025-06-24T17:22:48.344803+08:00 dlm-tb wpa_supplicant[1213]: p2p-dev-wlp0s20: CTRL-EVENT-DSCP-POLICY clear_all
2025-06-24T17:22:48.344891+08:00 dlm-tb wpa_supplicant[1213]: nl80211: deinit ifname=p2p-dev-wlp0s20 disabled_11b_rates=0
2025-06-24T17:22:48.346835+08:00 dlm-tb systemd[1]: Reached target sleep.target - Sleep.
2025-06-24T17:22:48.370136+08:00 dlm-tb systemd[1]: Starting systemd-suspend.service - System Suspend...
2025-06-24T17:22:48.391355+08:00 dlm-tb wpa_supplicant[1213]: wlp0s20f3: CTRL-EVENT-DSCP-POLICY clear_all
2025-06-24T17:22:48.395522+08:00 dlm-tb kernel: PM: suspend entry (s2idle)
2025-06-24T17:22:48.395800+08:00 dlm-tb systemd-sleep[97934]: Performing sleep operation 'suspend'...
2025-06-24T17:22:48.403468+08:00 dlm-tb kernel: Filesystems sync: 0.007 seconds
2025-06-24T17:22:48.411279+08:00 dlm-tb wpa_supplicant[1213]: wlp0s20f3: CTRL-EVENT-DSCP-POLICY clear_all
2025-06-24T17:22:48.411440+08:00 dlm-tb wpa_supplicant[1213]: nl80211: deinit ifname=wlp0s20f3 disabled_11b_rates=0
// note, here I've deleted nothing from the log
// the log pauses for 8 minutes,
// seems to continue the sleep process,
// and then suddenly (17:30:55.936759) unblocks an interrupt
// and we see things waking up
2025-06-24T17:30:55.936672+08:00 dlm-tb kernel: Freezing user space processes
2025-06-24T17:30:55.936719+08:00 dlm-tb kernel: Freezing user space processes completed (elapsed 0.002 seconds)
2025-06-24T17:30:55.936749+08:00 dlm-tb kernel: OOM killer disabled.
2025-06-24T17:30:55.936755+08:00 dlm-tb kernel: Freezing remaining freezable tasks
2025-06-24T17:30:55.936756+08:00 dlm-tb kernel: Freezing remaining freezable tasks completed (elapsed 0.001 seconds)
2025-06-24T17:30:55.936757+08:00 dlm-tb kernel: printk: Suspending console(s) (use no_console_suspend to debug)
2025-06-24T17:30:55.936758+08:00 dlm-tb kernel: e1000e: EEE TX LPI TIMER: 00000011
2025-06-24T17:30:55.936758+08:00 dlm-tb kernel: ACPI: EC: interrupt blocked
2025-06-24T17:30:55.936759+08:00 dlm-tb kernel: ACPI: EC: interrupt unblocked
2025-06-24T17:30:55.936761+08:00 dlm-tb kernel: i915 0000:00:02.0: [drm] GT0: GuC firmware i915/adlp_guc_70.bin version 70.36.0
2025-06-24T17:30:55.936762+08:00 dlm-tb kernel: i915 0000:00:02.0: [drm] GT0: HuC firmware i915/tgl_huc.bin version 7.9.3
2025-06-24T17:30:55.936762+08:00 dlm-tb kernel: nvme nvme0: Shutdown timeout set to 10 seconds
2025-06-24T17:30:55.936764+08:00 dlm-tb kernel: nvme nvme0: 16/0/0 default/read/poll queues
2025-06-24T17:30:55.936764+08:00 dlm-tb kernel: i915 0000:00:02.0: [drm] GT0: HuC: authenticated for all workloads
2025-06-24T17:30:55.936765+08:00 dlm-tb kernel: i915 0000:00:02.0: [drm] GT0: GUC: submission enabled
2025-06-24T17:30:55.936766+08:00 dlm-tb kernel: i915 0000:00:02.0: [drm] GT0: GUC: SLPC enabled
2025-06-24T17:30:55.936767+08:00 dlm-tb kernel: i915 0000:00:02.0: [drm] GT0: GUC: RC enabled
2025-06-24T17:30:55.936768+08:00 dlm-tb kernel: mei_hdcp 0000:00:16.0-b638ab7e-94e2-4ea2-a552-d1c54b627f04: bound 0000:00:02.0 (ops i915_hdcp_ops [i915])
2025-06-24T17:30:55.936768+08:00 dlm-tb kernel: OOM killer enabled.
2025-06-24T17:30:55.937282+08:00 dlm-tb kernel: Restarting tasks ...
