Description of problem:
As description says, a high-frequency sound coming from the speakers when there has been no connection to pulseaudio for ~10 seconds. Very annoying, and a regression, seeing as I use pulse now on ubuntu, and it works nice.
Steps to Reproduce:
1. Boot fedora, turn on speakers
High-freq sound coming from speakers
The sound disappear when anything is connected to pulseaudio (it seems). Even the pa-volume-control
Seems like its the "ATI Technologies Inc SB600 Azalia" that is the sinner, seeing as I don't use anything but the dvi-output from the card.
What logs are needed for this?
Sounds more like a driver/hw problem.
Could you please run "pacmd ls" when you hear this and attach this here. If everything is correct in PA this should tell us that no app is playing audio an the device closed becuase idle. If that is the case then we should reassign this to the kernel, as it is a kernel driver/hw prob.
Created attachment 361305 [details]
output from pacmd ls
Created attachment 361316 [details]
The "pacmd ls" shows that all of PA's sinks are in state "SUSPENDED" meaning that the devices are closed. If you hear noise this means the sound must come from somewhere else.
Why changing from "10 seconds" to "for a while?", I counted, and it starts after pretty much 10 seconds every time.
do you see any interesting messages in /var/log/messages ? especially around the time the problem kicks in / goes away (when you start playing sound).
Fedora Bugzappers volunteer triage team
I'll get a copy of /var/log/messages uploaded as soon as I get the time (hopefully tomorrow). Any other files that would be interesting?
The problem seems to be the same as described on launchpad, and can (probably,haven't tested it yet) temporarily be solved by changing "options snd-hda-intel power_save=10 power_save_controller=N" to "options snd-hda-intel power_save=0 power_save_controller=N" in alsa-base.conf
Will test when I get the time.
This bug appears to have been reported against 'rawhide' during the Fedora 12 development cycle.
Changing version to '12'.
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I can confirm that adding line "options snd-hda-intel power_save=0" to a file in /etc/modprobe.d (for example /etc/modprobe.d/snd_hda_intel.conf) and rebooting works as a workaround for me.
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