https://bugzilla.suse.com/show_bug.cgi?id=1200461 https://bugzilla.suse.com/show_bug.cgi?id=1200461#c29 --- Comment #29 from Thomas Blume <thomas.blume@suse.com> --- (In reply to Mike DeMicco from comment #28)

FYI, there was a change to dracut-functions.sh that invoked "udevadm info -a." Older versions of this shell script do not do this (e.g., the 15.3 version of Leap, vs. latter versions). This is the change that caused the problem on my system.

Ok, still, 'updevadm info -a' should not hang your computer. Unfortunately, the udev debug logs didn't make it into the dmesg output. But I've found a resource conflict with your i/o controller: --> [ 13.209692] ACPI Warning: SystemIO range 0x0000000000000428-0x000000000000042F conflicts with OpRegion 0x000000000000042C-0x000000000000042D (\GP2C) (20211217/utaddress-204) [ 13.209701] ACPI: OSL: Resource conflict; ACPI support missing from driver? [ 13.211431] lpc_ich: Resource conflict(s) found affecting gpio_ich --< Such conflicting resources could probably cause a system hang when they are accessed by udevadm via sysfs. -- You are receiving this mail because: You are on the CC list for the bug.