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No sound with new install

Hi debian folks,

I installed Debian last week (for the first time), and things
generally went very nicely.

One thing which isn't yet working though is sound. I'm currently
using the kernel from debian-backports
(linux-image-3.2.0-0.bpo.2-amd64) in order to get my ethernet
working, but the same thing happenned with the stock 2.6 kernel too

Any suggestions at all of things to try would be most appreciated.
Below is hopefully relevant output from interesting commands.

Many thanks,


'alsactl init' returns the following:
Unknown hardware: "HDA-Intel" "Realtek ALC887-VD" "HDA:10ec0887,1458a002,00100302" "0x1458" "0xa002"
Hardware is initialized using a guess method
/usr/share/alsa/init/default:26: control element not found
/usr/share/alsa/init/default:26: control element not found
/usr/share/alsa/init/default:41: control element not found

'alsamixer' fails with:
cannot load mixer controls: Invalid argument

the relevant part of 'lspci -knnvv':
00:1b.0 Audio device [0403]: Intel Corporation Cougar Point High Definition Audio Controller [8086:1c20] (rev 04)
        Subsystem: Giga-byte Technology Device [1458:a002]
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 41
        Region 0: Memory at f7d00000 (64-bit, non-prefetchable) [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-
        Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
                Address: 00000000fee0300c  Data: 4171
        Capabilities: [70] Express (v1) Root Complex Integrated Endpoint, MSI 00
                DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us
                        ExtTag- RBE- FLReset+
                DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
                        RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
                        MaxPayload 128 bytes, MaxReadReq 128 bytes
                DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-
                LnkCap: Port #0, Speed unknown, Width x0, ASPM unknown, Latency L0 <64ns, L1 <1us
                        ClockPM- Surprise- LLActRep- BwNot-
                LnkCtl: ASPM Disabled; Disabled- Retrain- CommClk-
                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
                LnkSta: Speed unknown, Width x0, TrErr- Train- SlotClk- DLActive- BWMgmt- ABWMgmt-
        Capabilities: [100 v1] Virtual Channel
                Caps:   LPEVC=0 RefClk=100ns PATEntryBits=1
                Arb:    Fixed- WRR32- WRR64- WRR128-
                Ctrl:   ArbSelect=Fixed
                Status: InProgress-
                VC0:    Caps:   PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
                        Arb:    Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
                        Ctrl:   Enable+ ID=0 ArbSelect=Fixed TC/VC=01
                        Status: NegoPending- InProgress-
                VC1:    Caps:   PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
                        Arb:    Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
                        Ctrl:   Enable+ ID=1 ArbSelect=Fixed TC/VC=22
                        Status: NegoPending- InProgress-
        Capabilities: [130 v1] Root Complex Link
                Desc:   PortNumber=0f ComponentID=00 EltType=Config
                Link0:  Desc:   TargetPort=00 TargetComponent=00 AssocRCRB- LinkType=MemMapped LinkValid+
                        Addr:   00000000fed1c000
        Kernel driver in use: snd_hda_intel

'lsmod|grep snd' output:
snd_hda_codec_realtek   188417  1 
snd_hda_intel          26023  0 
snd_hda_codec          81579  2 snd_hda_codec_realtek,snd_hda_intel
snd_hwdep              13148  1 snd_hda_codec
snd_pcm                67465  2 snd_hda_intel,snd_hda_codec
snd_seq                44678  0 
snd_timer              22658  2 snd_pcm,snd_seq
snd_seq_device         13155  1 snd_seq
snd                    52458  8 snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_seq,
soundcore              13014  1 snd
snd_page_alloc         12969  2 snd_hda_intel,snd_pcm

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