Hello, I was able to pass-through an audio card to the VM. I could see the card connected to the VM, but it seems like it is not working in the VM. I tried passing card to Ubuntu 10.04 and Windows 7 as well. Windows7 detected the hardware as 'High Definition Audio Controller' but shows the device status as "The device can not start. (code 10)" Output from host machine the $ lspci -vvv -xxx 00:14.2 Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA) (rev 40) Subsystem: ASUSTeK Computer Inc. Device 8410 Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=slow >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Interrupt: pin ? routed to IRQ 16 Region 0: Memory at f9af8000 (64-bit, non-prefetchable) [disabled] [size=16K] Capabilities: [50] Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=55mA PME(D0+,D1-,D2-,D3hot+,D3cold+) Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME- Kernel driver in use: pci-stub Kernel modules: snd-hda-intel 00: 02 10 83 43 00 04 10 04 40 00 03 04 10 40 00 00 10: 04 80 af f9 00 00 00 00 00 00 00 00 00 00 00 00 20: 00 00 00 00 00 00 00 00 00 00 00 00 43 10 10 84 30: 00 00 00 00 50 00 00 00 00 00 00 00 0a 00 00 00 40: 00 00 02 00 00 10 00 00 00 00 00 00 01 00 00 00 50: 01 00 42 c8 00 00 00 00 00 00 00 00 00 00 00 00 60: 00 00 80 00 00 00 00 00 00 00 00 00 00 00 00 00 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Messages [ 358.721208] pci-stub 0000:00:14.2: PCI INT A -> GSI 16 (level, low) -> IRQ 16 [ 358.760108] pci-stub 0000:00:14.2: restoring config space at offset 0xf (was 0x0, writing 0xa) [ 358.760135] pci-stub 0000:00:14.2: restoring config space at offset 0x4 (was 0x4, writing 0xf9af8004) [ 358.760145] pci-stub 0000:00:14.2: restoring config space at offset 0x3 (was 0x0, writing 0x4010) [ 358.760156] pci-stub 0000:00:14.2: restoring config space at offset 0x1 (was 0x4100000, writing 0x4100002) # lspci -n 00:14.2 0403: 1002:4383 (rev 40) # echo "1002 4383" > /sys/bus/pci/drivers/pci-stub/new_id # echo "0000:00:14.2" > /sys/module/snd_hda_intel/drivers/pci\:HDA\ Intel/unbind # echo "0000:00:14.2" > /sys/bus/pci/drivers/pci-stub/bind # echo "1002 4383" > /sys/bus/pci/drivers/pci-stub/remove_id # qemu-system-x86_64 -hda Windows_7.img -m 1024M -device pci-assign,host=00:14.2 # lspci -k 00:14.2 Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA) (rev 40) Subsystem: ASUSTeK Computer Inc. Device 8410 Kernel driver in use: pci-stub Kernel modules: snd-hda-intel Now it shows the pci-stub as the kernel driver in use, but prior to executing the bind/unbind commands it was showing driver in use as HDA Intel. Thanks and Regards, Prasad -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
