Bug 783116

Summary:	[Regression] "hda-intel: IRQ timing workaround" being invoked for 3.2-series kernels
Product:	[Fedora] Fedora	Reporter:	James <james>
Component:	kernel	Assignee:	Kernel Maintainer List <kernel-maint>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	rawhide	CC:	auxsvr, gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda
Target Milestone:	---
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Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2012-05-02 19:50:52 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:

Description James 2012-01-19 12:27:28 UTC

Description of problem:
On the 3.2-series kernels (the earliest I've tested is kernel-3.2.0-2.fc16.x86_64 built from F17 sources), the IRQ timing workaround for hda-intel is being invoked again. This leads sometimes to choppy audio under load.

This ISN'T being invoked on kernel-3.1.6-1.fc16.x86_64, where I've not noticed any problems.

The machine has a Realtek ALC883 codec. Relevant stuff from dmesg (under 3.1.6):


[   22.949918] ALSA sound/pci/hda/patch_realtek.c:1226 SKU: Nid=0x1d sku_cfg=0x40158615
[   22.949922] ALSA sound/pci/hda/patch_realtek.c:1228 SKU: port_connectivity=0x1
[   22.949924] ALSA sound/pci/hda/patch_realtek.c:1229 SKU: enable_pcbeep=0x1
[   22.949926] ALSA sound/pci/hda/patch_realtek.c:1230 SKU: check_sum=0x00000005
[   22.949929] ALSA sound/pci/hda/patch_realtek.c:1231 SKU: customization=0x00000086
[   22.949931] ALSA sound/pci/hda/patch_realtek.c:1232 SKU: external_amp=0x2
[   22.949933] ALSA sound/pci/hda/patch_realtek.c:1233 SKU: platform_type=0x1
[   22.949935] ALSA sound/pci/hda/patch_realtek.c:1234 SKU: swap=0x0
[   22.949938] ALSA sound/pci/hda/patch_realtek.c:1235 SKU: override=0x1


With 3.2, the additional appears:


[   62.488790] hda-intel: IRQ timing workaround is activated for card #0. Suggest a bigger bdl_pos_adj.

Comment 1 Josh Boyer 2012-01-19 12:41:30 UTC

We've added no patches to the 3.2 kernel in the ALSA area, so this is likely an upstream issue.  Since you seem comfortable building your own kernels, would you mind reporting this to the upstream ALSA maintainers and working directly with them?

If you wind up opening a bug in https://bugtrack.alsa-project.org/alsa-bug/, please add it to the External Trackers section.

Comment 2 James 2012-01-19 13:17:47 UTC

Will do.

Comment 3 Josh Boyer 2012-04-30 21:09:48 UTC

Are you still seeing this issue with the 3.3 final kernel or with 3.4-rc4/5?

Comment 4 James 2012-05-02 19:21:30 UTC

Not currently seeing it with kernel-3.3.2-6.fc16.x86_64.

Comment 5 Josh Boyer 2012-05-02 19:50:52 UTC

Great, thanks.  Please reopen if it pops back up.

Comment 6 Red Hat Bugzilla 2013-10-04 00:13:47 UTC

Removing external tracker bug with the id '0005513' as it is not valid for this tracker