I have 2 Toshiba Satellite A135 laptops with SB450 HDA Audio. The sound did not work at all with Kubuntu 7.04 Feisty, but did work with Kubuntu 6.10 Edgy. I got the sound working by adding some parameters to the snd_hda_intel driver module. I did not update the ALSA drivers.
$ sudo vim /etc/modprobe.d/alsa-base
Add the following line at the end of the file:
options snd-hda-intel probe_mask=8 model=3stack
I restarted the laptop after saving the changes to the /etc/modprobe.d/alsa-base file.
Note: I had tried the snd-hda-intel options line with model=auto and that did not work for me. I tried the snd-hda-intel options line with model=auto without the probe_mask and it did not work for me. On the second laptop I downloaded and compiled the newer ALSA drivers and the 1.0.14rc4 drivers did not work for me.
I have 2 Toshiba Satellite A135 laptops with SB450 HDA Audio. The sound did not work at all with Kubuntu 7.04 Feisty, but did work with Kubuntu 6.10 Edgy. I got the sound working by adding some parameters to the snd_hda_intel driver module. I did not update the ALSA drivers.
$ sudo vim /etc/modprobe. d/alsa- base
Add the following line at the end of the file:
options snd-hda-intel probe_mask=8 model=3stack
I restarted the laptop after saving the changes to the /etc/modprobe. d/alsa- base file.
Note: I had tried the snd-hda-intel options line with model=auto and that did not work for me. I tried the snd-hda-intel options line with model=auto without the probe_mask and it did not work for me. On the second laptop I downloaded and compiled the newer ALSA drivers and the 1.0.14rc4 drivers did not work for me.
I got this workaround from https:/ /bugs.launchpad .net/ubuntu/ +source/ linux-source- 2.6.20/ +bug/103379