I am a new user and have installed 10.04 from the Edubuntu iso download. I'm running on an HP desktop (Intel P4). Things are working great, except that I have no sound. This machine previously had Kubuntu installed and sound worked. I have done some basic trouble shooting. I know that my speakers are not muted and have controls available in sound preferences. When playing music in Rythmbox or an internet video in a mozilla window, the applications indicate that sound is being played (counter moves, no error messages) but nothing comes out of the speakers. I followed the steps at <a href="https://help.ubuntu.com/community/SoundTroubleshooting">https://help.ubuntu.com/community/SoundTroubleshooting</a> Information follows this message. I verified that my soundcard is supported by ALSA and it's the right module, but I started getting lost in Codec information and a patch for this particular soundcard. I am a very new user, but I can follow directions. Thanks! <pre>sudo aplay -l *** List of PLAYBACK Hardware Devices **** </pre>card 0: ICH5 [Intel ICH5], device 0: Intel ICH [Intel ICH5] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: ICH5 [Intel ICH5], device 4: Intel ICH - IEC958 [Intel ICH5 - IEC958] Subdevices: 1/1 Subdevice #0: subdevice #0 Sound modules are installed. <pre> lspci -v | less </pre>00:1f.5 Multimedia audio controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) AC'97 Audio Controller (rev 02) Subsystem: Hewlett-Packard Company Device 12bc Flags: bus master, medium devsel, latency 0, IRQ 17 I/O ports at 1000 [size=256] I/O ports at 1400 [size=64] Memory at fc480400 (32-bit, non-prefetchable) [size=512] Memory at fc480600 (32-bit, non-prefetchable) [size=256] Capabilities: <access denied> Kernel driver in use: Intel ICH Kernel modules: snd-intel8x0