Here is the output of the sudo cat /sys/kernel/debug/suspend_stats command after taking the steps from https://wiki.ubuntu.com/DebuggingKernelSuspend
success: 0 fail: 0 failed_freeze: 0 failed_prepare: 0 failed_suspend: 0 failed_suspend_late: 0 failed_suspend_noirq: 0 failed_resume: 0 failed_resume_early: 0 failed_resume_noirq: 0 failures: last_failed_dev: last_failed_errno: 0 0 last_failed_step: SSH connection was not possible during the blank screen after resume. Tried both WLAN and fixed. Apparently networking is down after resume. I'm nevertheless attaching /var/log/Xorg.0.log.old in the hope that this would give additional information (not from SSH, this is from normal boot and login with 4.8-rc4) ** Attachment added: "/var/log/Xorg.0.log.old" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1618550/+attachment/4734015/+files/Xorg.0.log.old -- 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