On Wed, Jan 10, 2024 at 11:57 PM Michael B Allen <ioplex at gmail.com> wrote: > > Just updated CentOS 9 Stream on a Lenovo T17 Gen 4 Intel and now it > won't suspend with the following error: ... > [ 72.805437] Freezing of tasks failed after 20.006 seconds (1 tasks > refusing to freeze, wq_busy=0): > [ 72.805450] task:NFSv4 callback state:I stack:0 pid:2191 > ppid:2 flags:0x00004000 FYI After reverting to 5.14.0-388 yesterday, stability is restored. I can consistently suspend and resume without issues. In hindsight, kernel 391 was also giving me issues. My wired network would sporadically fail to come up after suspend. No amount of fiddling would restore. Only rebooting. I have not seen that behavior with 388 either. This would suggest an issue with networking / suspend between 388 and 391. Q: If I update, am I going to lose kernel 388? How can I persist that one specific kernel indefinitely and still be able to update the rest of the system? Mike # grubby --info=ALL | grep ^kernel kernel="/boot/vmlinuz-5.14.0-404.el9.x86_64" kernel="/boot/vmlinuz-5.14.0-391.el9.x86_64" kernel="/boot/vmlinuz-5.14.0-388.el9.x86_64" kernel="/boot/vmlinuz-0-rescue-aaab5fbe787947ec94b3c7574b9d41e6" # grubby --default-kernel /boot/vmlinuz-5.14.0-388.el9.x86_64