Hello, Well, I finally figured out the cause, thanks to Richard's first suggestion in looking at journalctl output. I was playing around with udev rules to try to automatically mount an external drive (it didn't really work yet). Apparently having this extra rule in /etc/udev/rules.d causes the system to continually reboot, something to do with watchdog and udev I guess. These lines were in the log: Jan 19 13:19:12 daedalus kernel: watchdog watchdog1: watchdog did not stop! Jan 19 13:19:12 daedalus kernel: watchdog watchdog1: watchdog did not stop! Jan 19 13:19:12 daedalus systemd-udevd[512]: Error calling EVIOCSKEYCODE on device node '/dev/input/event16' (scan code 0x150, key code 190): Invalid argument Somehow I missed the udev error before, but simply removing the extra rule fix the infinite reboot issue. It is still surprising to me that such an innocent mistake causes that kind of catastrophic results. Thanks again for all the response. They prompted me to look into this direction which solved the issue eventually. Best, AC -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org