Created attachment 1239276 [details]
Select output of "journalctl" on system where reboot was attempted
Description of problem:
When using either the GUI icons to "Shutdown" or "Reboot" or the CLI commands (sudo reboot, sudo shutdown -h now), the system begins to shutdown, but hangs at the CLI reporting "Kernel not configured for semaphores (System V IPC). Not using udev synchronisation code. device-mapper: remove ioctl on fedora00-root failed: Device or resource busy". I have to use the physical switch on the machine to shut the system down.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Install Fedora-Workstation-Live-x86_64-Rawhide-20170110.n.0
2. Attempt to shutdown or reboot either from the GUI or the CLI
3. Encounter error
I had a similar problem on my old AMD motherboard.
Shutdown by CLI command almost always failed and hang-up with error.
Shutdown with power-switch succeeded (but occasionally failed).
In my case, fortunately, shows oops message at pata_atiixp driver, and by removeing pata_atiixp module, the problem is gone completely.
> the problem is gone completely.
Sorry, this is my mistake. Today, I experienced similar problem again.
It's clear that removing pata_atiixp is not enough.
I updated to 4.9.6-200.fc25.x86_64.
It seems that 4.9.6-200.fc25.x86_64 almost fixes this problem, but still causes panic at shutdown in a rare case, only once in my ten shutdown attempt.
I will continue testing 4.9.6 with workaround wrote before, disabling unused device driver modules (radeon, pata_atiixp, pata_acpi, ata_generic, parport_pc, ppdev).