On 07/05/11 20:32, David wrote: > > I got two recommendations: > a) Used 'alsamixer' to unmute all channels. The were, as a responder > suggested, muted. > b) Installed kmod-alsa from elrepo. It produced a bunch of warnings > which I ignored. > c) I performed lspci | grep -i audio, and got > > 00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset > High Definition Audio (rev 06) > 01:00.1 Audio device: nVidia Corporation High Definition Audio > Controller (rev a1) Hmm, any idea why you have 2 audio controllers? > I am not sure where to go from here. Next you need to identify the Vendor:Device ID pairing for your device(s) above and then search for a driver that supports them. If I show you by example, on MY hardware, perhaps you can follow along for yours... You already did: # lspci | grep -i audio 00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 02) so now take the PCI ID (first part above) and query it for the Vendor:Device ID pairing: # lspci -n | grep '00:1b.0' 00:1b.0 0403: 8086:293e (rev 02) and take the Vendor:Device ID pairing (8086:293e in my example) and search for a matching driver supporting that device: # grep -i 8086 /lib/modules/*/modules.alias | grep -i 293e /lib/modules/2.6.18-128.el5/modules.alias:alias pci:v00008086d0000293Esv*sd*bc*sc*i* snd-hda-intel /lib/modules/2.6.18-164.el5/modules.alias:alias pci:v00008086d0000293Esv*sd*bc*sc*i* snd-hda-intel /lib/modules/2.6.18-194.el5/modules.alias:alias pci:v00008086d0000293Esv*sd*bc*sc*i* snd-hda-intel /lib/modules/2.6.18-238.9.1.el5/modules.alias:alias pci:v00008086d0000293Esv*sd*bc*sc*i* snd-hda-intel /lib/modules/2.6.18-238.el5/modules.alias:alias pci:v00008086d0000293Esv*sd*bc*sc*i* snd-hda-intel /lib/modules/2.6.18-53.el5/modules.alias:alias pci:v00008086d0000293Esv*sd*bc*sc*i* snd-hda-intel /lib/modules/2.6.18-92.el5/modules.alias:alias pci:v00008086d0000293Esv*sd*bc*sc*i* snd-hda-intel which shows me the snd-hda-intel driver present in kernel-2.6.18-53.el5 onwards supports my hardware. Now do the same for your hardware and show us the results.