kernel 2.6.7 and sound

jam222 · 07-08-2004, 04:23 PM

I have just compiled kernel 2.6. 7. It seems that there is an issue with sound. Wen I start KDE it gives me an error

Error initializing the sound driver:

device /dev/dsp can't be opened (No such file or directory)

The sound server will continue using a null output device.

I looked at dev directory and I cannot find dsp.

I also tried running alsaconf but it couldn't find my sound card. With kernel 2.4.x. It had no problems finding my sound card. I am using Dell Latitude C810 (laptop) and the sound card is built in. When I was compiling kernel I selected the option for "Dell laptop support".

Can someone please help.

suslik · 07-08-2004, 04:58 PM

There is no Dell Support option in sound section of 2.6.7. I checked both, ALSA and OSS. You probably saw it in CHipset support for sensors or APM/ACPI. In any case, that doesnt activate/include software for your soundcard.

TO DO:

Find out what actual sound chip you have in the laptop, and Check it in Device Drivers>Sound>ALSA>PCI Devices

jong357 · 07-08-2004, 05:03 PM

It's probably an i810 AC'97. I would suggest the same thing that I just suggested to the_woelf on this page only use the appropriate ./configure switch for that card.... Just my 2 cents...

jam222 · 07-08-2004, 06:07 PM

Sorry I cannot find teh post by he_woelf. Do you have the link

thanks

jong357 · 07-08-2004, 06:14 PM

Sorry....

http://www.linuxquestions.org/questi...35#post1035435

Thats just what I do based upon my expierences with alsa over the past year or so. It always works for me... Other people would probably suggest entirely different solutions. This just works for me....

Go here and click on the DETAILS link of your card and follow the instructions for the alsa-driver part of it... I'm still assuming you are using an i810.... Check the results of 'lspci' to make sure...

http://www.alsa-project.org/alsa-doc...r-Intel#matrix

jong357 · 07-08-2004, 07:04 PM

You could also just download the package, untar it, cd into it and:

Code:

./snddevices

chmod a+rw /dev/dsp /dev/mixer /dev/sequencer /dev/midi

Just a thought. All that stuff is on their web page. You can also run that script on newer versions than what it states. I have to no ill effect... It just sounds like your missing some dev nodes is all...... Not sure why you would be, but if you honestly can't find it, then your probably missing it. That script will create it.

jam222 · 07-08-2004, 08:34 PM

will it be OK to uninstall all the alsa packages and then reinstall the packages includung the driver package. I mean to say will it have the same effect

jong357 · 07-08-2004, 08:48 PM

Sure.... Theres no reason to do that unless you want to move to a newer version. 1.0.5a is the latest tho. When 1.0.6 comes out and you want to upgrade to the newer version, uninstall ALL of them and then make sure you keep the version numbers the same when you re-install....

alsa-driver is the only one that you need, but if it makes you feel better, you can unistall them all and then re-install them all... It shouldn't matter tho... Personally, I would download the source and use the "card specific ./configure switch" for your card. By installing the Slak-pak off the cd, your bloating your 'module sound' directory with stuff your not even going to use. ie- modules for all sorts of other cards.... Up to you tho.

I would probably try using that sndevices script first tho.... Thats just me tho. It couldn't hurt as far as I can tell... I've done it before. It just makes device nodes that should already be there. Alsa is complaining that you don't have atleast one of them tho, so thats what I would tend to look at first....

javamdk · 07-08-2004, 11:54 PM

Well I had the same problem when I updated my older 2.4.x kernel to 2.6.7... When I booted back up and loged into X, I got the same error... all I did was log into root, type:

Code:

alsaconfig

then follow through the instructions, let it compile everything for you and voila... you should be set... type:

Code:

alsamixer

and fix your PCM and Master controls to your liking.

I believe 2.6.7 did away with other sound drivers, so your /dev/ folder will look a bit different. I hope this helps... JoeY

jong357 · 07-09-2004, 07:24 AM

Hey, If you haven't found this yet, here it is...

http://www.linuxquestions.org/questi...a+udev+devices

Sounds like your Exact same problem. I don't use 2.6 kernels so I was unaware of it.... Good luck... I need a break from the alsa posts....

jam222 · 07-09-2004, 07:43 AM

thanks it worked. Still no /dev/dsp but sound is working.