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[SOLVED] Dummy output - No Sound Card Detected / snd-hda-intel - (Karmic)

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linux-howto

http://ubuntuforums.org – After so many many attempts to solve my audio problems when upgrading to Karmic, I finally found a working solution :p ! First, let me decribe what the problem was: 1) no audio card was detected at all => cat /proc/asound/cards returned an empty content => cat /proc/asound/devices did not include any audio devices => 'Hardware' tab in sound preferences was empty 2) the audio tray indicated a "dummy output" SOLUTION ======== For those who do not have a fresh Karmic install (in other words those who have upgraded their Jaunty install), you should update your Grub BEFORE applying the 2 steps described hereunder: sudo update-grub Step1: make the sound card being recognized => Purge alsa-base and pulseaudio, eg: sudo apt-get remove --purge alsa-base sudo apt-get remove --purge pulseaudio sudo apt-get install alsa-base sudo apt-get install pulseaudio sudo alsa force-reload Now, reboot, you shoud now SEE (but maybe not yet hear) your soundcard. Give a try to: cat /proc/asound/cards and see if any card is listed... Step2 : If the sound is crapy, you MAY have to edit the alsa config file: sudo gedit /etc/modprobe.d/alsa-base-conf a) comment (#) the following line: # options snd-hda-intel power_save=10 power_save_controller=N b) Add a new line options snd-hda-intel probe_mask=1 model=hp Replace "hp" with appropriate computer model. See here Good luck ! Bernard. (Hardware)