Comment 27 for bug 21574

I can also confirm that this bug still exists with the latest feisty kernel (2.6.20-14-generic). dmesg doesn't show anything obvious relating to this, lspci -vv output is as follows:

00:1e.2 Multimedia audio controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 Audio Controller (rev 03)
        Subsystem: Hewlett-Packard Company Unknown device 0934
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Latency: 0
        Interrupt: pin A routed to IRQ 22
        Region 0: I/O ports at 3100 [size=256]
        Region 1: I/O ports at 3200 [size=64]
        Region 2: Memory at c8c01000 (32-bit, non-prefetchable) [size=512]
        Region 3: Memory at c8c02000 (32-bit, non-prefetchable) [size=256]
        Capabilities: [50] Power Management version 2
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-