Bug 890622 (hdmithaw)

Summary: hdmi audio fails after hibernate-thaw
Product: [Fedora] Fedora Reporter: Arne Woerner <arne_woerner>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: unspecified    
Version: 17CC: gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2013-01-29 08:20:16 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:
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Bug Depends On:    
Bug Blocks: 781749    
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Description Flags
audio related syslog messages none

Description Arne Woerner 2012-12-28 08:27:54 UTC 
Created attachment 669789 [details]
audio related syslog messages

Description of problem:
When I do some (e. g. 2) hibernate-thaw-cycles I cannot use HDMI audio anymore.
It doesnt happen each time, but i have to reboot if i want to fix it...
I use
os: Fedora Core 17 (fully updated)
sound system: pulseaudio
cpu: AMD A10-5800K
mainboard: GigaByte GA-F2A75M-D3H

Version-Release number of selected component (if applicable):
Linux vaako.intern.wgboome.org 3.6.10-2.fc17.x86_64 #1 SMP Tue Dec 11 18:07:34 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

How reproducible:
sometimes 3 thaw-s r successful...

Steps to Reproduce:
1. start mplayer and pause
2. hibernate-thaw
3. continue mplayer
  
Actual results:
Sometimes there is no sound with the following symptoms:
Pulseaudio's volume meter either shows zero volume or the volume bar doesnt
flicker as rapid as it should and video playback is slow and jumpy.
When I switch the mplayer process to the analog audio sink, audio+video work fine again.
Restarting pulseaudio+mplayer doesnt help.
Reloading the kernel module (fglrx) doesnt help.
Rmmod-ing the snd_hda_intel module crashes the box.

Expected results:
audio should work after thaw like it did before hibernate...

Additional info:
i added audio related syslog lines
i filed a bug report here: http://ati.cchtml.com/show_bug.cgi?id=681
Comment 1 Arne Woerner 2012-12-29 08:48:14 UTC 
i found a workaround:
1. i do this before hibernate:
   > ( echo set-card-profile alsa_card.pci-0000_00_01.1 off ; \
       echo set-card-profile alsa_card.pci-0000_00_14.2 off ) | pacmd
2. and set the proper profiles after thaw
3. when the HDMI profile fails, then i let it hibernate-thaw again
   (with profiles set to 'off'),
   but in fake mode
   (in order to avoid a power cycle):
   # echo reboot > /sys/power/disk

does it help to debug that problem?
why is it, that the HDMI audio sometimes thaws properly and sometimes it doesnt?
Comment 2 Arne Woerner 2013-01-29 08:20:16 UTC 
it seems like it is fixed now (since a week or so)... :-)