Problem-Audio Bug with the 3.9.5 Kernel.
Edit in, 19:45, 15 June 2013: It's a bug. See post #15, below.
***************************************************************** Original first post: Did the upgrade about an hour ago and sound, for the most part, has disappeared. Sound will work in Xfce, but the volume is very low. Upon starting KDE it brings up a box with the message that KDE "has detected that one or more internal devices were removed.." and do I want KDE to forget about them. It then lists two items, one for output and one for capture, and they are both the default sound device that has not been removed. I've ran alsamixer and all looks well and it shows the Sigmatel stac9221 A1 card as the default device. Looks to be a kernel problem or a firmware problem? Guess they are one and the same, basically. Thanks. :hattip: |
Went back to the 3.8.13 kernel and sound has returned.
Kept the new 20130610 firmware package. |
I saw the KDE prompt as well, and confirmed the removal (it was capture and output for both HDA Intel and Conexant audio on my X200.) Sound still works as it should on mine, however.
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Decided to give the 3.9.5 kernel another try and the results were the same. However, just for chuckles I ran "play" from the command line outside of X and could play audio files. Then, if on a fresh boot, I use Xfce I can hear audio in music or video IF I turn the volume almost all the way to the max.
However, once KDE is fired up there is no audio whatsoever. None, from the command line outside of X, or if I switch to Xfce without rebooting, i.e., no sound from any application running in Xfce. I've tried various "fixes" and still searching for a answer. Any ideas.. anyone? Thanks. :hattip: |
I had the same thing here right after the kernel bump and removing the KDE devices upon restarting KDE (which I think is the right thing to do). Volume was up, so I hit the mixer button and found that PCM was turned all the way down. Once I turned that up, it worked. It's been fine since.
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However, :) I had already checked the PCM and it was on (selected as a control) and turned all the way up. Doesnt' make a difference. The problem remains. :) |
Maybe deleting the files in /var/lib/alsa/ and restarting rc.alsa would help?
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Try to remove /home/you/.kde/share/config/phonondevicesrc
and restart kde |
I saw the same thing with my hardware.
On initial boot with the new kernel, I saw messages about undefined controls from alsa. I deleted /var/lib/alsa/asound.state and did 'alsactl store'. On reboot the messages were gone. KDE prompted about devices being removed, so I removed the devices. I also entered 'alsamixer' from a terminal window, pushed the levels up, then tested sound using mpg123. I then entered the KDE SystemSettings -> Multimedia -> Phonon -> Device Preferences and configured the device preferences after using the Test button to find the appropriate device. More mucking about than I have had to do for a while, so a good reminder! |
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I tried re-installing gstreamer, phonon, X (just for the heck of it), and a few other things. Nothing worked. Finally, I threw in the towel and did a fresh installation from a very recent ISO of -current, brought it up-to-date, installed all the multilib files, etc., and audio has returned. The volume is still not as "strong" as it use to be, but it now works. Nothing wrong with the speakers, btw, I booted over to, ugh, Xp, and they work fine. Thanks to Mr. Volkerding and gmgf for their suggestions and zakame and allend for their replies. :hattip: |
Well, I'm over here in, ugh, Xp and, well.... With the volume knob on the speakers turned up only half way, as compared to the level used in Slackware64-current, about 80%, I have to turn the XP software volume control almost to 1 or 2 to get it down to a reasonable level. Plus the overall quality of the sound (tone, richness, etc., etc.) is far superior to what comes out of the same speakers, playing the same file through the same player (VLC).
Don't know what to say, but there has to be something wrong with the audio since installing the latest kernel. :scratch: |
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IIRC, "True Multilib" is how Alien BOB referred to the files.:) Other than the name, they are the "standard" multilib files, nothing customized.
:) Edit in: Found it, first paragraph, "This article contains instructions on how to create a true multilib Slackware64..." http://alien.slackbook.org/dokuwiki/...kware:multilib |
Well, well, well.... Seems it is considered a bug over at Redhat,
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