I installed FC1 on Toshiba Satellite 1675 with CS4281 onboard. The sound works great until today suddenly it stops working. 1. I run modprobe cs4281, there's no result is displayed. 2. Restart my notebook. 3. Rerun modprobe cs4281, gives me this result: /lib/modules/2.4.22-1.2115.nptl/kernel/drivers/sound/cs4281/cs4281.o: init_module: No such device Hint: insmod errors can be caused by incorrect module parameters, including invalid IO or IRQ parameters. You may find more information in syslog or the output from dmesg /lib/modules/2.4.22-1.2115.nptl/kernel/drivers/sound/cs4281/cs4281.o: insmod /lib/modules/2.4.22-1.2115.nptl/kernel/drivers/sound/cs4281/cs4281.o failed /lib/modules/2.4.22-1.2115.nptl/kernel/drivers/sound/cs4281/cs4281.o: insmod cs4281 failed I didn't change anything on my system. Can anyone help? Thanks, toblo