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Bug 1351738

Summary: Broadwell sound no longer workin in 4.6 kernels
Product: [Fedora] Fedora Reporter: Oleg Drokin <green>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 24CC: delyan.kratunov, fedora, gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda, mchehab
Target Milestone: ---   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: kernel-4.6.4-301.fc24 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2016-07-20 00:23:39 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

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.