I just installed Ubuntu Server 12.10. I am using openbox and startx for my gui session. I decided not to post in the Ubuntu forum because I felt this issue might be relevant to other distros as well, especially Debian based ones.I installed firefox and flashplugin-installer so I could watch youtube videos. The videos seem like the work fine, however, I seem to be without sound.I also got volumeicon-alsa and alsa-utils but when I run alsamixer I get:cannot open mixer: No such file or directorywhen I try to run volumeicon I getvolumeicon: alsa_backend.c:86: asound_get_volume: Assertion `m_elem != ((void *))' failed.I don't mind using something other than alsa if I need to. I would just like to know what packages I need to install to be able to get sound on youtube videos.
Packages needed to get sound working
ubuntu;audio
First get the available sound card device list by:aplay -lThen you can create either ~/.asoundrc or /etc/asound.conf ( go with the second one, then it will be set for every user on the machine ) with the default device settings. So write into one of this files accordingly to the output of the first command. For example my output was:card 0: Generic [HD-Audio Generic], device 3: HDMI 0 [HDMI 0]- Subdevices: 1/1- Subdevice #0: subdevice #0card 1: SB [HDA ATI SB], device 0: CONEXANT Analog [CONEXANT Analog]- Subdevices: 1/1- Subdevice #0: subdevice #0  See the lines I made bold? That is the line for my soundcard, so I use that data to enter into my /etc/asound.conf:defaults.pcm.card 1defaults.pcm.device 0defaults.ctl.card 1Do this for yourself (use all three configuration option), and dont forget to login/logout.