Tested with mainline kernel 4.9-rc3 and the bug still exists. Like discussed on Sep 9 in this same thread, creating the kernel resume trace file fails
$ sudo sh -c "sync && echo 1 > /sys/power/pm_trace && pm-suspend" sh: 1: cannot create /sys/power/pm_trace: Permission denied Please help me solve the "Permission denied" error to enable tracing in steps 3.-10. ** Tags removed: kernel-bug-exists-upstream-4.8-rc8 ** Tags added: kernel-bug-exists-upstream-4.9-rc3 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1618550 Title: [HP 15-r085no Notebook PC (ENERGY STAR)] Suspend/resume freezes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1618550/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs