Bug 1918672 - kernel > 5.10.3 breaks sound playback on Raspberry Pi 4
Summary: kernel > 5.10.3 breaks sound playback on Raspberry Pi 4
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: 33
Hardware: aarch64
OS: Linux
Target Milestone: ---
Assignee: Kernel Maintainer List
QA Contact: Fedora Extras Quality Assurance
Depends On:
TreeView+ depends on / blocked
Reported: 2021-01-21 10:33 UTC by Benjamin Masse
Modified: 2021-03-10 18:15 UTC (History)
19 users (show)

Fixed In Version:
Doc Type: ---
Doc Text:
Clone Of:
Last Closed: 2021-02-26 09:52:52 UTC
Type: Bug

Attachments (Terms of Use)
dmesg.txt (7.07 KB, text/plain)
2021-01-21 10:33 UTC, Benjamin Masse
no flags Details

Description Benjamin Masse 2021-01-21 10:33:34 UTC
Created attachment 1749343 [details]

Created attachment 1749343 [details]

1. Please describe the problem:
kernel-5.10.x break sound playback on Raspberry Pi 4

2. What is the Version-Release number of the kernel:

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 :
Sound playback working when running with kernel 5.9.x

4. Can you reproduce this issue? If so, please provide the steps to reproduce
   the issue below:
Update to kernel-5.10.9 on Raspberry Pi 4 enabling updates-testing 
Reboot and login back
Unable to test speakers via gui or cli

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``:

6. Are you running any modules that not shipped with directly Fedora's kernel?:

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.

Comment 1 Benjamin Masse 2021-02-26 09:52:52 UTC
Resolved with kernel-5.11

Comment 2 Benjamin Masse 2021-03-08 12:49:33 UTC
Present in march kernel test day kernel-5.11.3-50.fc33 (also reported in Test results)

Comment 3 Benjamin Masse 2021-03-10 18:15:02 UTC
Curiously enough, when restablishing dtparam=audio=on in config.txt with kernel-5.11.5, sound is working again, while that precise parameter was not needed with 5.10.3
Sorry for the confusion

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