Bug 1351738

Summary:	Broadwell sound no longer workin in 4.6 kernels
Product:	[Fedora] Fedora	Reporter:	Oleg Drokin <green>
Component:	kernel	Assignee:	Kernel Maintainer List <kernel-maint>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	24	CC:	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.