Bug 1981009

Summary: slow boot after kernel upgrade to 5.12.13-300.fc34.x86_64
Product: [Fedora] Fedora Reporter: Marco <palazzotti>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED DUPLICATE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: unspecified    
Version: 34CC: acaringi, adscvr, airlied, alciregi, bskeggs, christian.groove, hdegoede, jarodwilson, jeremy, jforbes, jglisse, jonathan, josef, kernel-maint, lgoncalv, linville, masami256, mchehab, ptalbert, steved
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
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Last Closed: 2021-07-24 15:53:59 UTC Type: Bug
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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dmesg none

Description Marco 2021-07-10 14:11:29 UTC
1. Please describe the problem:
   after upgrade to 5.12.13-300.fc34.x86_64 boot process take long time to boot

2. What is the Version-Release number of the kernel:
   5.12.13-300.fc34.x86_64

3. Did it work previously in Fedora? If so, what kernel version did the issue
   *first* appear?  Old kernels are available for download at
   https://koji.fedoraproject.org/koji/packageinfo?packageID=8 :
   Yes it work previusly

4. Can you reproduce this issue? If so, please provide the steps to reproduce
   the issue below:
   Just selecting old kernel (5.12.12-300) at boot time all is fine

5. Does this problem occur with the latest Rawhide kernel? To install the
   Rawhide kernel, run ``sudo dnf install fedora-repos-rawhide`` followed by
   ``sudo dnf update --enablerepo=rawhide kernel``:
   I don't know. Same problem with last 5.12.14-300.fc34.x86_64

6. Are you running any modules that not shipped with directly Fedora's kernel?:
   no

7. Please attach the kernel logs. You can get the complete kernel log
   for a boot with ``journalctl --no-hostname -k > dmesg.txt``. If the
   issue occurred on a previous boot, use the journalctl ``-b`` flag.

I can see a lot of error from xkbcomp

Comment 1 Marco 2021-07-10 14:15:58 UTC
Created attachment 1800266 [details]
dmesg

Comment 2 GroovieMan 2021-07-12 05:41:34 UTC
I do see also slow boot time on all of my pc's  (3 PC and 2 Notbooks).

Comment 3 GroovieMan 2021-07-21 05:21:38 UTC
The problem is still there, after updating to the newest kernel '5.12.17-300.fc34.x86_64' the system is still slow on boot. So a little workaround ist is run 

$ dracut -o "dbus" -f

to fix it until the next kernel update arrives.

Comment 4 Justin M. Forbes 2021-07-24 15:53:59 UTC
This has nothing to do with kernel at all, other than your initramfs is generated on kernel install.

*** This bug has been marked as a duplicate of bug 1976653 ***