After installing the latest Ubuntu package updates this morning (which contained kernel updates and therefore required a restart - kernel version is now 2.6.24-21-generic) I noticed the sound stopped working. That is, I couldn't open the sound mixer. Before that I hadn't done a reboot for at least 3 days and there were some other package updates inbetween but it seems more logical that the kernel update caused it. I didn't change anything else in the system, as far as I'm aware.
Anyway, further investigation showed that the sound chip isn't installed / recognised anymore:
simon@copperhead:/dev$ cat /proc/asound/cards --- no soundcards ---
My laptop is the Inspiron 1525 with Ubuntu pre-installed. Is anyone else having this problem? Any clues what might have gone wrong here? Any pointers how to re-install it?
I had similar issues yesterday with a new Inspiron 530 that came with ubuntu installed.
Had to do some major editing to get the sound working using the ALSA sound drivers and alsamixer commands. Advanced Linux
ALSA = the Advanced Linux Sound Architecture
I have Kubuntu running on my pc so forgive any mention of KDE stuff . In your konsole/terminal type :
sudo alsamixer
then your password
You will then see a basic sound mixer showing the status of all sound-related devices. Check which ones have MM under, then select them one by one and press M key to unmute them.
You can also increase the levels up and down with your arrow buttons
I have also just found an excellent guide to ALSA here:
http://www.debianhelp.co.uk/sound.htm
Y
Message Edited by andybleaden on 10-15-2008 09:11 AM
With $ sudo dpkg -r linux-backports-modules-2.6.24-19-generic.
(As that was the last kernel version).
Still no sound. I purchased this 1525N laptop with Gutsy, and was successfully able to restore the sound after upgrading to Hardy as per the Dell Wiki. The wiki needs an upgrade.
Shanix: That is most weird. I was aware of that page, however it describes problems with switching to Ubuntu / kernel versions that were before my previous kernel anyway. So I was already successfully using a kernel later than the ones on that page without sound problems (apart from problems with Flash hogging sound resources). Indeed because of the Flash problems I tried the steps on that page but I didn't have that replaced-by-modem driver so everything seemed fine.
Now with the -21 kernel the appropriate folder does have a renamed driver file. o_O So I followed the steps and everything works just fine again...
So, thanks for that!
andybleaden: alsamixer failed because the sound card wasn't recognised so I couldn't do anything with that.
StewartMM: Did you try the steps in the section "If already running Ubuntu 8.04 and upgrading to kernel 2.6.24-17-generic"?
I'm using GNOME commander in lieu of having to type in some of the commands (using the shell is easier than typing the path of like 8 directories) and when I renamed the driver file, I noticed I didn't take out the "hsfmodem".
Going back, doing that, and thing typing in the last three lines:
$ sudo depmod -a
$ sudo update-initramfs -u
$ sudo reboot
Took care of everything!
But what's really nice about Linux was that even before I was helped with the fix, I still had a usable system, as I just booted up using 2.6.24-19-generic until I was helped the fix.
(BTW, will the modem fix work? I don't really need the modem, but I suspect the same driver which previously worked, if I chose to install it, would work. I probably won't install it again (to avoid this happening again, but just checking to see if anyone knew).
andybleaden
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Posted October 15th, 2008 12:00
I had similar issues yesterday with a new Inspiron 530 that came with ubuntu installed.
Had to do some major editing to get the sound working using the ALSA sound drivers and alsamixer commands. Advanced Linux
ALSA = the Advanced Linux Sound Architecture
I have Kubuntu running on my pc so forgive any mention of KDE stuff . In your konsole/terminal type :
sudo alsamixer
then your password
You will then see a basic sound mixer showing the status of all sound-related
devices. Check which ones have MM under, then select them one by one and press M key
to unmute them.
You can also increase the levels up and down with your arrow buttons
I have also just found an excellent guide to ALSA here:
http://www.debianhelp.co.uk/sound.htm
Y