Created attachment 1460028 [details] Screenshot Description of problem: Fedora boot stalled for 1 minute at least, then definitively it fails. Version-Release number of selected component (if applicable): kernel-4.17* How reproducible: Random before system boot. Actual results: INFO: rcu_sched detected stalls on CPUs/tasks: o1-...! (0 ticks this GP) idle=880/0/0 softirq=547/550 fqs=o(detected by 0, t=60002 jiffies, g=-156, c=-157, q=27) ... Please, see attached image. $ journalctl --all | grep rcu lug 16 17:36:27 localhost kernel: RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 lug 17 10:31:40 localhost kernel: RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 lug 17 11:34:19 localhost kernel: RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 lug 17 21:05:11 localhost kernel: RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 lug 18 11:16:10 localhost kernel: RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 lug 18 15:37:27 localhost kernel: RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 lug 19 10:45:27 localhost kernel: RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 lug 19 11:08:23 localhost kernel: RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 lug 19 14:16:43 localhost kernel: RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 Expected results: System boot begins.
We apologize for the inconvenience. There is a large number of bugs to go through and several of them have gone stale. Due to this, we are doing a mass bug update across all of the Fedora 28 kernel bugs. Fedora 28 has now been rebased to 4.18.10-300.fc28. Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel. If you have moved on to Fedora 29, and are still experiencing this issue, please change the version to Fedora 29. If you experience different issues, please open a new bug report for those.
I'm still getting those random errors at boot with Fedora 28 and 4.18.12-200.fc28.x86_64
This issue looks fixed with recent 4.19.* kernels. I will reopen this bug if happens again.
>I will reopen this bug if happens again. Happens again: kernel 4.20.13-200.fc29.x86_64 I fear it may be even an hardware issue.
The boot interruptions does not longer occur since i removed 'rhgb quiet' options from kernel boot line of Grub2.