Sound worked with this hardware in Fedora Core 4. After an upgrade to Fedora Core 5, sound did not work. Currently, sound does not work on this machine with either kernel-smp-2.6.15-1.2054_FC5 or kernel-smp-2.6.16-1.2080_FC5. I have gone through the normal steps of running system-config-soundcard and using alsamixer to make sure that output channels are not muted. No sound. The proper sound modules seem to be loaded but the sound device doesn't appear to get initialized properly. For example, 'cat /sys/module/snd_hda_intel/parameters/model' returns "<NULL>", which I gather from some reading around means that the module hasn't loaded and/or initialized the device correctly. This issue seems similar to that discussed in bug #182940, but I've not been able to find any reference to the ALC260 in any of the discussion of this issue (that bug is for the HDA/STAC92xx). My computer is not a laptop, either, but an HP desktop. My problem may be related to the issues described in https://bugtrack.alsa-project.org/alsa-bug/view.php?id=1843. However, the changes made to ALSA drivers for 1.0.11-rc4 do not fix the problem for me. I upgraded my ALSA drivers to 1.0.11-rc4 by following the instructions in http://people.redhat.com/stransky/alsa/ with no change.
Created attachment 127581 [details] Output of system-config-soundcard after upgrading ALSA drivers to 1.0.11-rc4
Created attachment 127582 [details] Output of system-config-soundcard with default kernel drivers
I have a HP dc7600 with kernel-smp-2.6.16-1.2080_FC5, and had exactly the same problem. I've installed the latest alsa drivers and still no sound at all. Finally I succeded by adding the line options snd-hda-intel model=basic to file /etc/modprobe.conf (then reboot and unmute the volume with alsamixer) good luck!
Yes, adding the model parameter works for me, too. Also, there's a patch at https://bugtrack.alsa-project.org/alsa-bug/view.php?id=2106 which solves the problem for me, as well.
Cool...thanks for the info!