Here are futher observations: Using a USB device interferes with suspend/hibernation. When something is plugged in my USB ports, suspend/hibernation seems to always fail (everytime I tried it so far with USB device plugged in). The I have to 'sudo update-initramfs -u' again, reboot once, and then suspend/hibernation works again. After I just plugged in a USB device, and unplugged it right away, and tried suspend, computer did not go in a complete sleep mode, but instead only after a few seconds the computer immediately came back from suspend.
Even when I hibernate successfully, at the beginning of the hibernation process, I see a fleeting error message (most of the time, maybe every time?) about PCI...something failing to thaw. But otherwise everyhting seems to work as expected. The two executions of 'sudo update-initramfs -u' that I wrote about before, were not meant for two different kernel version, but it was the identical repetiotion of the same commad for the same kernel. I am not sure whether one really needs to run it twice every time, but I was suprise to see, that the size of initrd.img produced for the same kernel by consecutive runs of 'sudo update-initramfs -u' always changes between runs by a few bytes (up to a hundred bytes or so). Actually so far I did it only three times consecutively at most ... -- suspend/hibernate stopped working after abrupt shutdown https://bugs.launchpad.net/bugs/311954 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs