Hi, I have just completed installing Fedora Core 9 on a Dell XPS M1530 and everything works seemingly ok, except sound.

I get the following messages in the syslog:

ALSA sound/pci/hda/hda_intel.c:1810: chipset global capabilities = 0x4401
ALSA sound/pci/hda/hda_intel.c:749: codec_mask = 0x4
ALSA sound/pci/hda/hda_codec.c:2236: hda_codec: model 'dell-bios' is selected for config 1028:22e (Dell )
ALSA sound/pci/hda/patch_sigmatel.c:1685: hda_codec: pin nid 0a bios pin config 0221101f
ALSA sound/pci/hda/patch_sigmatel.c:1685: hda_codec: pin nid 0b bios pin config 40f000f1
ALSA sound/pci/hda/patch_sigmatel.c:1685: hda_codec: pin nid 0c bios pin config 40f000f7
ALSA sound/pci/hda/patch_sigmatel.c:1685: hda_codec: pin nid 0d bios pin config 90170110
ALSA sound/pci/hda/patch_sigmatel.c:1685: hda_codec: pin nid 0e bios pin config 02a11020
ALSA sound/pci/hda/patch_sigmatel.c:1685: hda_codec: pin nid 0f bios pin config 02011030
ALSA sound/pci/hda/patch_sigmatel.c:1685: hda_codec: pin nid 10 bios pin config 40f000f2
ALSA sound/pci/hda/patch_sigmatel.c:1685: hda_codec: pin nid 11 bios pin config 40f000f3
ALSA sound/pci/hda/patch_sigmatel.c:1685: hda_codec: pin nid 12 bios pin config 40f000f4
ALSA sound/pci/hda/patch_sigmatel.c:1685: hda_codec: pin nid 13 bios pin config 90a6012e
ALSA sound/pci/hda/patch_sigmatel.c:1685: hda_codec: pin nid 14 bios pin config 40f000f5
ALSA sound/pci/hda/patch_sigmatel.c:1685: hda_codec: pin nid 21 bios pin config 985610a0
ALSA sound/pci/hda/patch_sigmatel.c:1685: hda_codec: pin nid 22 bios pin config 40f000f6
ALSA sound/pci/hda/patch_sigmatel.c:1685: hda_codec: pin nid 23 bios pin config 00000000
ALSA sound/pci/hda/patch_sigmatel.c:1712: hda_codec: pin nid 0f pin config 02270110
ALSA sound/pci/hda/patch_sigmatel.c:1712: hda_codec: pin nid 0e pin config 02a79130
ALSA sound/pci/hda/hda_codec.c:2857: autoconfig: line_outs=1 (0xd/0x0/0x0/0x0/0x0)
ALSA sound/pci/hda/hda_codec.c:2861: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
ALSA sound/pci/hda/hda_codec.c:2865: hp_outs=2 (0xf/0xa/0x0/0x0/0x0)
ALSA sound/pci/hda/hda_codec.c:2866: mono: mono_out=0x0
ALSA sound/pci/hda/hda_codec.c:2874: inputs: mic=0xe, fmic=0x0, line=0x0, fline=0x0, cd=0x0, aux=0x0
ALSA sound/pci/hda/patch_sigmatel.c:2080: stac92xx_add_dyn_out_pins: total dac count=4
ALSA sound/pci/hda/patch_sigmatel.c:2202: dac_nids=3 (0x5/0x2/0x4/0x0/0x0)
ALSA sound/pci/hda/hda_codec.c:1073: Cannot find slave Side Playback Volume, skipped
ALSA sound/pci/hda/hda_codec.c:1073: Cannot find slave Headphone Playback Volume, skipped
ALSA sound/pci/hda/hda_codec.c:1073: Cannot find slave Headphone Playback Volume, skipped
ALSA sound/pci/hda/hda_codec.c:1073: Cannot find slave Speaker Playback Volume, skipped
ALSA sound/pci/hda/hda_codec.c:1073: Cannot find slave External Speaker Playback Volume, skipped
ALSA sound/pci/hda/hda_codec.c:1073: Cannot find slave Speaker2 Playback Volume, skipped
ALSA sound/pci/hda/hda_codec.c:1073: Cannot find slave Side Playback Switch, skipped
ALSA sound/pci/hda/hda_codec.c:1073: Cannot find slave Headphone Playback Switch, skipped
ALSA sound/pci/hda/hda_codec.c:1073: Cannot find slave Headphone Playback Switch, skipped
ALSA sound/pci/hda/hda_codec.c:1073: Cannot find slave Speaker Playback Switch, skipped
ALSA sound/pci/hda/hda_codec.c:1073: Cannot find slave External Speaker Playback Switch, skipped
ALSA sound/pci/hda/hda_codec.c:1073: Cannot find slave Speaker2 Playback Switch, skipped
ALSA sound/pci/hda/hda_codec.c:1073: Cannot find slave IEC958 Playback Switch, skipped

Any ideas.

John

Ok, just a follow up, the sound is infact working but only through the headphones. How do I get the on board speakers to work like under FC8.

John

I have the same setup (XPS M1530 & FC9) and originally had the same problem. I ended up having to go into Volume Control, then enable (Edit -> Preferences) the Surround option, and finally unmute it. If that doesn't work, you might need to install alsa-oss-1.0.15-0.1.fc9 if you have the Sigmatel audio device (I'm pretty sure you do).

Good luck.