My sound won't work on 9, and it used to work under both 7.3 and 8.0. I did a clean install of shrike. When I use the 'Soundcard Detection' to try to set up sound, it detects the proper sound device: Vendor: ALi Corp Model: M5451 PCI AC-Link Controller Audio Device Module: trident When I hit the 'Play Test Sound', a pop up says "The trident driver could not be loaded. This soundcard may not be compatible with Red Hat Linux.", then another pop up says "Automatic detection of the sound card did not work. Audio will not be available on the system. Please click OK to continue." 'lsmod' reveals no driver loading. The driver exists in /lib/modules/2.4.20-8/kernel/drivers /sound/trident.o When I try 'insmod trident.o' I get the following error: trident.o: unresolved symbol ac97_probe_codec_R84601c2b trident.o: unresolved symbol pcigame_detach_Raad1b7fe trident.o: unresolved symbol pcigame_attach_R67b22ab0 Suggestions welcome.