I'm gonna try posting this again for two reasons: first, I have a bit more information to provide, and second, because I don't believe there is no-one floating around the list that can't help me out. Here's the order of events 1) Downloaded and installed the following 2.6.0-test kernel from arjanv's repo: kernel-2.6.0-0.test9.1.89 2) Downloaded all the support RPMs as well, but didn't install them since the dates and version numbers where lower than those already installed on FC1. 3) Created my /etc/modprobe.conf - after much tweaking, poking, prodding, and googling, it looks like this: include /etc/modprobe.conf.dist alias eth0 natsemi alias sound-slot-0 snd-ali5451 alias sound-card-0 snd-ali5451 alias sound-service-0-0 snd-mixer-oss alias sound-service-0-1 snd-seq-oss alias sound-service-0-3 snd-pcm-oss alias sound-service-0-8 snd-seq-oss alias sound-service-0-12 snd-pcm-oss alias usb-controller usb-ohci alias ieee1394-controller ohci1394 alias eth1 orinoco_pci install sound-slot-0 /sbin/modprobe --ignore-install sound-slot-0 && { /bin/aumix-minimal -f /etc/.aumixrc -L >/dev/null 2>&1 || :; } remove sound-slot-0 { /bin/aumix-minimal -f /etc/.aumixrc -S >/dev/null 2>&1 || :; } ; /sbin/modprobe -r --ignore-remove sound-slot-0 (Note: in my original post, I was trying to use the "snd-trident" driver, but I feel this is a better match for the hardware). 4) When I reboot, all the relevant modules are loaded when needed (e.g. when I bring up eth[0|1], those modules load fine). Unfortunately sound does not. 5) If I manually type "modprobe snd-ali5451" it loads up no worries. --> Question 1 is why doesn't it load automatically, like 2.4.22's "trident" module does? 6) I've gone away and installed the alsa RPMs from FreshRPMS, since the new kernel wants to use alsa. 7) I then go into KDE, and some sound-related things work (such as the mixer, which loads up fine), others do not. For a start, Xine (which I obtained from http://cambuca.ldhs.cetuc.puc-rio.br/xine/) has serious issues playing - it correctly realises that it should use the ALSA plugin, but no sound comes out, it fills up the output buffer and starts throwing error messages that the buffer is full. audio_alsa_out: snd_pcm_open() of front failed: Invalid argument audio_alsa_out: >>> check if another program don't already use PCM <<< libmad: ALERT input buffer too small (418 bytes, 83 avail)! audio_alsa_out: snd_pcm_open() of front failed: Invalid argument audio_alsa_out: >>> check if another program don't already use PCM <<< 8) Also, I insert an audio CD and nothing happens (I start up kscd, but it doesn't even pick up the audio CD to play it - I don't know if this is related to my sound woes or not). If someone floating around out there on the list has any suggestions at all, i'd appreciate it. Obviously it's just a test kernel, and these sorta bugs are to be expected - but I have a feeling this is just something stupid I'm doing wrong somewhere. Cheers, Dan