My laptop will not resume after suspend to RAM (low battery, or lid closed etc.). From user observation only, suspend seems to work normally, then resume “tries” (there’s a time when it looks as if it will work as previously) but then it reboots instead. This started after updates ~21st June. Further updates have been applied without success. The journal records a reboot (literally “-- Reboot --”) after lines indicating the system was put into sleep mode (e.g. last line before the reboot starts “systemd-sleep: preparing boot-loader: selecting entry openSUSE Tumbleweed”), and lastlog indicates a resume starts and then the system shuts down:
11676- OK ] Started Show Plymouth Boot Screen. 11677- OK ] Found device PM951 NVMe SAMSUNG 512GB primary. 11678- Starting Resume from hiber…using device /dev/nvme0n1p2... 11679- OK ] Reached target Paths. 11680- OK ] Started Forward Password R…s to Plymouth Directory Watch. 11681- OK ] Started Resume from hibern…n using device /dev/nvme0n1p2. 11682- OK ] Reached target Local File Systems (Pre). 11683- OK ] Reached target Local File Systems. 11684- OK ] Reached target System Initialization. 11685- OK ] Reached target Basic System. 11686- OK ] Found device PM951 NVMe SAMSUNG 512GB primary. 11687- OK ] Reached target Initrd Root Device. 11688- Starting File System Check…152f-4b0d-b1f4-ae8be0fe4241... 11689- OK ] Started File System Check on /dev/disk/by-uuid/c4750d41-152f-4b0d-b1f4-ae8be0fe4241. 11690- Mounting /sysroot... 11691- OK ] Mounted /sysroot. 11692- OK ] Reached target Initrd Root File System. 11693- Starting Reload Configuration from the Real Root... 11694- OK ] Started Reload Configuration from the Real Root. 11695- OK ] Reached target Initrd File Systems. 11696- OK ] Reached target Initrd Default Target. 11697- Starting Cleaning Up and Shutting Down Daemons... 11698- OK ] Stopped target Remote File Systems. 11699- OK ] Stopped target Initrd Default Target.
Suspend/resume has normally worked without fail, since this (Dell XPS13) laptop was first installed in 2015. Any ideas?