Following up to myself, I have ruled out a hardware problem by booting the Fedora 7 Live CD and confirming that he card works under that distro. I used the F7 /etc/modprobe.conf as a cheat sheet but still am not getting audio under CentOS 5. I listed the loaded modules after rebooting and found that the sound drivers still had not loaded in spite of the modified modprobe.conf: alias scsi_hostadapter sata_nv alias eth0 forcedeth alias snd-card-0 snd-hda-intel options snd-card-0 index=0 options snd-hda-intel index=0 I ran modprobe snd-card-0 and all of the expected modules loaded as they did under F7 but still no audio output. I checked to be sure kudzu was seeing the device and it is: # kudzu -p ........ class: AUDIO bus: PCI detached: 0 desc: "nVidia Corporation MCP61 High Definition Audio" vendorId: 10de deviceId: 03f0 subVendorId: 103c subDeviceId: 2a5c pciType: 1 pcidom: 0 pcibus: 0 pcidev: 5 pcifn: 0 ''''''''' I want to stay on CentOS for stability and longevity reasons. On Sun, 2007-09-30 at 19:24 -0400, Chuck Mattern wrote: > I've go a Compaq Presario (SR5110NX) that I've loaded CentOS 5 on and > all is well except for the sound card. I understand that OSS supports > the chipset but it's not being detected an loaded properly and I've > invested a significant amount of time already. I've probably got an old > supported card lying around here somewhere but I hat to give up on the > principal. I would rather not download the proprietary drivers as that > will create a dependency when the kernel is upgraded and I'm shipping > this off to a remote law office where I'd like them to be a little more > self sufficient than having to have me log in and recompile each time > they upgrade a kernel. Any experience or advise with this would be > appreciated. > > Regards, > Chuck > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos