Have you got ACPI working on? I have a HP zt1180 laptop which also uses on-board VIA 82cXXX sound card. It had the same symptom like yours until I enabled acpi. Zach Wilkinson <zachw@xxxxxxxxxxx> writes: > On board sound card is a ADI AD1980 SoundMAX 6-channel CODEC S/PDIF out > interface. Is detected as follows: > > [Output from dmesg:] > Via 686a/8233/8235 audio driver 1.9.1-ac3 > PCI: Found IRQ 9 for device 00:11.5 > PCI: Sharing IRQ 9 with 00:10.4 > via82cxxx: Six channel audio available > PCI: Setting latency timer of device 00:11.5 to 64 > via82cxxx: timeout while reading AC97 codec (0xAA0000) > ac97_codec: AC97 Audio codec, id: ADS112 (Unknown) > via82cxxx: board #1 at 0xE000, IRQ 9 > > [Output from lsmod:] > via82cxxx_audio 24056 1 (autoclean) > ac97_codec 17064 0 (autoclean) [via82cxxx_audio] > uart401 8356 0 (autoclean) [via82cxxx_audio] > sound 73300 0 (autoclean) [via82cxxx_audio uart401] > soundcore 6500 4 (autoclean) [via82cxxx_audio sound] > > [Output from cat /proc/pci:] > Bus 0, device 17, function 5: > Multimedia audio controller: VIA Technologies, Inc. VT8233/A/8235 > AC97 Audio Controller (rev 96). > IRQ 9. > I/O at 0xe000 [0xe0ff]. > > Sound Card detection tool identifies it as above, but the test sound > cannot be heard. From command line, # play <some_wav>.wav also produces > no sound, as well as no errors. > System thinks everything is fine but I hear nothing, even when volume is > turned up. > Works fine when booted into WinXP. > > Zach -- The rain it raineth on the just And also on the unjust fella, But chiefly on the just, because The unjust steals the just's umbrella.