The internal speaker of my laptop never functionned under Ubuntu. I tried to follow indication on the web and now the jack audio does not work either.
The graphic interface for audio management now displays a 'dummy output' instead of the three possible outputs I used to have (one of them was working for the jack output).
In a terminal
raises an error:
cannot open mixer: No such file or directory
I did try to remove and reinstall
alsa-utils but it did not change anything.
This happened after a failed atempt to install
alsa-driver-linuxant_18.104.22.168_all.deb from here.
My sound card seems to be not recognised anymore. After reboot I have no more the sound icon in menu bar the upper right corner.
I think I have removed my sound card driver.
Indeed, the command
sudo lshw -class multimedia
indicated audi device as unclaimed.
Any idea how I could revert to a better situation (that is jack support and alsa working)?
lspci -nnk | grep -iEA3 audio gives
lspci -nnk | grep -iEA3 audio 00:1b.0 Audio device : Intel Corporation 82801I (ICH9 Family) HD Audio Controller [8086:293e] (rev 03) Subsystem: ASUSTeK Computer Inc. Device [1043:1893] 00:1c.0 PCI bridge : Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 [8086:2940] (rev 03)