Note: This is a public test instance of Red Hat Bugzilla. The data contained within is a snapshot of the live data so any changes you make will not be reflected in the production Bugzilla. Email is disabled so feel free to test any aspect of the site that you want. File any problems you find or give feedback at bugzilla.redhat.com.
Bug 1351738 - Broadwell sound no longer workin in 4.6 kernels
Summary: Broadwell sound no longer workin in 4.6 kernels
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: 24
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Kernel Maintainer List
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-06-30 17:07 UTC by Oleg Drokin
Modified: 2016-07-20 00:23 UTC (History)
8 users (show)

Fixed In Version: kernel-4.6.4-301.fc24
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2016-07-20 00:23:39 UTC
Type: Bug
Embargoed:

Attachments (Terms of Use)

Description Oleg Drokin 2016-06-30 17:07:11 UTC 
Description of problem:

Upgrading to
kernel-core-4.6.3-300.fc24.x86_64 I lost sound on my Broadwell core-m laptop
(Dell Latitude 7350).

Version-Release number of selected component (if applicable):

kernel-4.6.3-300.fc24.x86_64

How reproducible:
100% reproducible.

The problem is apparently the CONFIG_SND_SOC_INTEL_BROADWELL_MACH is no longer selected in the 4.6 kernel where as it all worked fine before:

[root@gnome ~]# grep BROADW /boot/config-4.*
/boot/config-4.5.6-300.fc24.x86_64:CONFIG_SND_SOC_INTEL_BROADWELL_MACH=m
/boot/config-4.5.7-300.fc24.x86_64:CONFIG_SND_SOC_INTEL_BROADWELL_MACH=m
[root@gnome ~]# rpm -qa | grep kernel-core
kernel-core-4.5.6-300.fc24.x86_64
kernel-core-4.6.3-300.fc24.x86_64
kernel-core-4.5.7-300.fc24.x86_64
Comment 1 Josh Boyer 2016-07-02 00:48:30 UTC 
Should be fixed in the next build.  With the rebase I accidentally dropped CONFIG_DW_DMAC_CORE=y (because it's actually a terrible hack but upstream made a poor choice requiring that for sound on these platforms).
Comment 2 charles profitt 2016-07-04 22:10:33 UTC 
Any ETA on a new build of the kernel with this config option
Comment 3 Josh Boyer 2016-07-04 22:20:27 UTC 
(In reply to charles profitt from comment #2)
> Any ETA on a new build of the kernel with this config option

Later this week.  The Fedora updates system will leave comments when it's filed.
Comment 4 Delyan Kratunov 2016-07-11 06:24:07 UTC 
@Josh - the week is over yet no comment from the updates system and I'm still experiencing this with the latest kernel from @updates - 4.6.3-300.fc24. I see that you kicked off a build on July 5 for 4.6.3-200 - was that the build with the fix? Is it possible that someone beat you to bumping the version number? :)
Comment 5 Josh Boyer 2016-07-11 11:19:23 UTC 
(In reply to Delyan Kratunov from comment #4)
> @Josh - the week is over yet no comment from the updates system and I'm
> still experiencing this with the latest kernel from @updates -
> 4.6.3-300.fc24. I see that you kicked off a build on July 5 for 4.6.3-200 -
> was that the build with the fix? Is it possible that someone beat you to
> bumping the version number? :)

No.  4.6.4 was queued upstream and we're waiting for that release.
Comment 6 Fedora Update System 2016-07-12 18:31:57 UTC 
kernel-4.6.4-301.fc24 has been submitted as an update to Fedora 24. https://bodhi.fedoraproject.org/updates/FEDORA-2016-9a16b2e14e
Comment 7 Fedora Update System 2016-07-14 01:55:31 UTC 
kernel-4.6.4-301.fc24 has been pushed to the Fedora 24 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-9a16b2e14e
Comment 8 Oleg Drokin 2016-07-14 12:44:27 UTC 
kernel-4.6.4-301.fc24 fixes the issue for me.
Comment 9 charles profitt 2016-07-16 21:48:28 UTC 
kernel-4.6.4-301.fc24 fixes the issue for me as well.
Comment 10 Fedora Update System 2016-07-20 00:22:38 UTC 
kernel-4.6.4-301.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.
Note You need to log in before you can comment on or make changes to this bug.