Hi everyone (first post!)

I have just installed Fedora Core 8, but I can't hear any sounds. When I run the soundcard detection (currently using GNOME) it finds 2 cards:
- a Creative SoundBlaster Live! Value card (as seen in the lspci output below) (which works!)
- an Intel audio controller (doesn't work)

Why can't I hear any sound except in the soundcard detection, and how can I fix it? My soundcard does work in Windows XP, Ubuntu and OpenSUSE 10.2.

uname -r output:
2.6.23.1-42.fc8

/sbin/lspci output:
00:00.0 Host bridge: Intel Corporation 82875P/E7210 Memory Controller Hub (rev 02)
00:01.0 PCI bridge: Intel Corporation 82875P Processor to AGP Controller (rev 02)
00:1d.0 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #1 (rev 02)
00:1d.1 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #2 (rev 02)
00:1d.2 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #3 (rev 02)
00:1d.3 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #4 (rev 02)
00:1d.7 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB2 EHCI Controller (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev c2)
00:1f.0 ISA bridge: Intel Corporation 82801EB/ER (ICH5/ICH5R) LPC Interface Bridge (rev 02)
00:1f.1 IDE interface: Intel Corporation 82801EB/ER (ICH5/ICH5R) IDE Controller (rev 02)
00:1f.2 IDE interface: Intel Corporation 82801EB (ICH5) SATA Controller (rev 02)
00:1f.3 SMBus: Intel Corporation 82801EB/ER (ICH5/ICH5R) SMBus Controller (rev 02)
00:1f.5 Multimedia audio controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) AC'97 Audio Controller (rev 02)
01:00.0 VGA compatible controller: nVidia Corporation NV31 [GeForce FX 5600] (rev a1)
02:00.0 FireWire (IEEE 1394): Texas Instruments TSB12LV26 IEEE-1394 Controller (Link)
02:01.0 Modem: Broadcom Corporation BCM4212 v.90 56k modem (rev 02)
02:02.0 Multimedia audio controller: Creative Labs [SB Live! Value] EMU10k1X
02:02.1 Input device controller: Creative Labs [SB Live! Value] Input device controller
02:08.0 Ethernet controller: Intel Corporation 82562EZ 10/100 Ethernet Controller (rev 02)

Have you tried adjusting (and unmuting) channels in alsamixer?