Confirm that removing: nvme_core.default_ps_max_latency_us=0 from boot params results in reproducible problem on resume from suspend.
Downloaded and installed 4.13 headers and generic kernel: Linux version 4.13.0-041300rc1-generic Unable to test issue with above kernel. System boots ok, but now fails to suspend, so cannot check result on resume. Starts to suspend, switches off monitors, then hangs and becomes totally unresponsive, but still powered up, fan running, etc, will not resume, requiring power down or reset button to be pressed, no clues in syslog: Jul 22 00:40:05 phs08 systemd[1]: Reached target Sleep. Jul 22 00:40:05 phs08 systemd[1]: Starting Suspend... Jul 22 00:40:05 phs08 systemd-sleep[4059]: Failed to connect to non-global ctrl_ifname: (nil) error: No such file or directory Jul 22 00:40:05 phs08 systemd-sleep[4060]: /lib/systemd/system-sleep/wpasupplicant failed with error code 255. Jul 22 00:40:05 phs08 systemd-sleep[4059]: Suspending system... Screens off, keyboard, mouse unresponsive, will not resume from suspend Reset or Power off/on -> re-boots ok System is also much noisier with fan seemingly running at higher speed, but cannot check as it87 will not load. Also notice that asus_wmi is loaded, but this is not a laptop. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1705748 Title: Samsung SSD 960 EVO 500GB refused to change power state To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1705748/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
