Thank you all for your assistance. Kieran's libao magic got me outputting sound to "ALSA PCM on hw:1 (pcsp)". This was better than nothing, but it sounds like a tin-can-and-string phone. Other suggestions I found on the net were dead ends. Pulseaudio showed rhythmbox sound going to "ALSA PCM on front:0 (STAC92xx Analog)" but I couldn't get my mixer (right term?) to connect that to the speakers. ANYWAY, I went another route, installing ubuntu 8.10 on a partition on my laptop. It worked out of the box. I finally heard those bongos! -Rich -----Original Message----- From: wlug-bounces@mail.wlug.org [mailto:wlug-bounces@mail.wlug.org] On Behalf Of E Johnson Sent: Friday, February 20, 2009 6:22 AM To: Worcester Linux Users Group Subject: Re: [Wlug] no sound from ubuntu I'm running ubuntu 8.04 on Dell 1525n (laptop) and had sound problems out of the box when it arrived April 2008 with ubuntu 7.10 installed. I had it fixed within 24 hours. Then various kernel updates have had sound working or not, seemingly randomly. Now I'm running 8.04, with working sound in kernel 2.6.24-22 generic, which as I recall, did not need extra effort to get it working... they have it right in that one. I think we tested the later kernel and sound was broken again. Getting it going: I would first do Kieran's step 4 before starting to remove obsolete config files & that stuff. If you get any indication your sound is trying to work, go see about the switches in Alsamixer then. We have a new Gregbuilt* desktop in here, which runs ubuntu 8.04 very very nicely. But even in this, we had to set some sound switches oddly --labels on some of these speakers (front, back, etc) did not seem to correspond correctly. So it took some tweaking. If you are running on a Dell laptop (I saw something in your lspci output that mentioned Dell), and if all else fails, I would roll back to ubuntu 8.04 --the kernel I have working here --until the forums quit reporting broken sound.in intrepid. I like ubuntu hardy very well. I can share my amixer output (how switches are set in ALSA) if needed, or other config files or whatever. Your mileage may differ, but there may be some use in checking out what works here. Good luck, Liz J * a WLUG member. 2009/2/20 Kieran O'Callaghan <kieran@tiac.net>:
I had the same problem after upgrading to 8.10, below are my notes from fixing it. These steps worked for me. However, I have the nagging
worry that maybe I didn't have to go through all of it (the steps 1 to
5) and that maybe I just had to futz around with the volume levels and
other settings to get everything to work. So maybe try the stuff after
step 5 first.
What seems to have fixed sound after it didn't work after upgrade to 8.10:
From https://wiki.ubuntu.com/PulseAudio did: Go to System -> Administration -> and click on Users and Groups.
Click on Manage Groups, and scroll all the way to the bottom of the list where you will find:
* pulse-access * pulse-rt
Make sure to highlight each, one at a time, and click Properties. Just
put a check next to each user that you want to be able to have access to sound. For example, there's "ted" and "root" and "kamilion" listed,
and you only want "kamilion" to have access to sound, that's the one to check, leave the other two blank.
Note: The "pulse" group is for pulseaudio internal use, and normal users should not be added to this group.
Then did: 2. Configure libao applications to use PulseAudio: Code:
$ echo "default_driver=pulse" >~/.libao
3. Perform the following steps to remove obsolete configuration files,
ensure "libflashsupport" is not installed & you have the all the necessary packages up-to-date: Code:
$ rm -r ~/.pulse ~/.asoundrc* $ sudo apt-get update && sudo apt-get dist-upgrade $ sudo apt-get remove libflashsupport $ sudo apt-get install libasound2-plugins padevchooser libao-pulse libsdl1.2debian-pulseaudio
NOTE: Choose Yes to allow unsigned packages to be installed.
4. Go to System/Preferences/Sound. Set all "Sound playback" options to
"Autodetect", and set "Sound capture" to "ALSA".
5. Reboot for changes to take effect!
Then had to use: alsamixer -D hw:0 and turn up pcm volume to get sound.
Recording still didn't work from the built-in mic. Also, the volume icon vanished somewhere along the line. Brought it back by going to the panel, right clicking and hitting add and adding it from there. Once it was there, right clicked on it and went to "open volume control". Go to preferences for each item in the dropdown and check everything. What seems to work is, under HDA ATI SB (Alsa Mixer), the volumes in the recording tab can all be all the way down and the device not set to be a recording device, under the switches tab though, it seems to be pretty important that analog loopback is unchecked. In the options tab, digital input source should be set to digital mic. Under HDA ATI HDMI (Alsa Mixer), IEC958 should be unchecked Under Sigmatel STAC9205 (OSS Mixer), it seems that the in-gain level is not important, as long as it isn't muted. Capture: Monitor Source of ALSA PCM on front:0 with toggle input source from master toggled on, unmuted and turned up Capture: ALSA PCM on front:0 (STAC92xx Analog) .. volume turned up, unmuted and master toggle on. Doesn't seem to matter what the volume level is, but it does matter if it's muted.
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