You can check whether s2idle or suspend (s3) is used by kernel 5.4 & kernel 4.15 by
$ cat /sys/power/mem_sleep s2idle [deep] where deep is s3 Switching one to another can be done by "echo deep | sudo tee /sys/power/mem_sleep" or "echo s2idle ..."). If switching to "deep" fixes your problem, you can make it permanent by adding "mem_sleep_default=deep" to your kernel parameters. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1910927 Title: Suspend stopped working since kernel 5.4 (ubuntu 20.04) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1910927/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
