I have a PC that I use as a home theater machine and suddenly it does not output any sound... The speaker icon at the task bar shows a red X (like muted) and when I double click it, it says: "No volume control GStreamer plugins and/or devices found". How can my sound device suddenly disappear like that and how do I fix it? I am running ubuntu 7.10 and i have not changed my kernel lately. I am runnning kernel 2.6.22-14.
dmesg output:
[ 0.000000] Linux version 2.6.22-14-generic (buildd@terranova) (gcc version 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2)) #1 SMP Tue Dec 18 08:02:57 UTC 2007 (Ubuntu 2.6.22-14.47-generic)
[ 0.000000] BIOS-provided physical RAM map:
[ 0.000000] BIOS-e820: 0000000000000000 - 000000000009f800 (usable)
[ 0.000000] BIOS-e820: 000000000009f800 - 00000000000a0000 (reserved)
[ 0.000000] BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved)
[ 0.000000] BIOS-e820: 0000000000100000 - 000000001ffd0000 (usable)
[ 0.000000] BIOS-e820: 000000001ffd0000 - 000000001ffde000 (ACPI data)
[ 0.000000] BIOS-e820: 000000001ffde000 - 0000000020000000 (ACPI NVS)
[ 0.000000] BIOS-e820: 00000000d0000000 - 00000000e0000000 (reserved)
[ 0.000000] BIOS-e820: 00000000fec00000 - 00000000fec01000 (reserved)
[ 0.000000] BIOS-e820: 00000000fee00000 - 00000000fef00000 (reserved)
[ 0.000000] BIOS-e820: 00000000ff780000 - 0000000100000000 (reserved)
[ 0.000000] 0MB HIGHMEM available.
[ 0.000000] 511MB LOWMEM available.
[ 0.000000] found SMP MP-table at 000ff780
[ 0.000000] Entering add_active_range(0, 0, 131024) 0 entries of 256 used
[ 0.000000] Zone PFN ranges:
[ 0.000000] DMA 0 -> 4096
[ 0.000000] Normal 4096 -> 131024
[ 0.000000] HighMem 131024 -> 131024
[ 0.000000] early_node_map[1] active PFN ranges
[ 0.000000] 0: 0 -> 131024
[ 0.000000] On node 0 totalpages: 131024
[ 0.000000] DMA zone: 32 pages used for memmap
[ 0.000000] DMA zone: 0 pages reserved
[ 0.000000] DMA zone: 4064 pages, LIFO batch:0
[ 0.000000] Normal zone: 991 pages used for memmap
[ 0.000000] Normal zone: 125937 pages, LIFO batch:31
[ 0.000000] HighMem zone: 0 pages used for memmap
[ 0.000000] DMI present.
[ 0.000000] ACPI: RSDP signature @ 0xC00F8F60 checksum 0
[ 0.000000] ACPI: RSDP 000F8F60, 0014 (r0 ACPIAM)
[ 0.000000] ACPI: RSDT 1FFD0000, 0034 (r1 A M I OEMRSDT 8000602 MSFT 97)
[ 0.000000] ACPI: FACP 1FFD0200, 0084 (r2 A M I OEMFACP 8000602 MSFT 97)
[ 0.000000] ACPI: DSDT 1FFD0440, 4BAD (r1 1ADGH 1ADGH004 4 INTL 20051117)
[ 0.000000] ACPI: FACS 1FFDE000, 0040
[ 0.000000] ACPI: APIC 1FFD0390, 0070 (r1 A M I OEMAPIC 8000602 MSFT 97)
[ 0.000000] ACPI: MCFG 1FFD0400, 003C (r1 A M I OEMMCFG 8000602 MSFT 97)
[ 0.000000] ACPI: OEMB 1FFDE040, 0060 (r1 A M I AMI_OEM 8000602 MSFT 97)
[ 0.000000] Nvidia board detected. Ignoring ACPI timer override.
[ 0.000000] If you got timer trouble try acpi_use_timer_override
[ 0.000000] ACPI: PM-Timer IO Port: 0x2008
[ 0.000000] ACPI: Local APIC address 0xfee00000
[ 0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
[ 0.000000] Processor #0 15:15 APIC version 16
[ 0.000000] ACPI: LAPIC (acpi_id[0x02] lapic_id[0x81] disabled)
[ 0.000000] ACPI: IOAPIC (id[0x01] address[0xfec00000] gsi_base[0])
[ 0.000000] IOAPIC[0]: apic_id 1, version 17, address 0xfec00000, GSI 0-23
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[ 0.000000] ACPI: BIOS IRQ0 pin2 override ignored.
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 14 global_irq 14 high edge)
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 15 global_irq 15 high edge)
[ 0.000000] ACPI: IRQ9 used by override.
[ 0.000000] ACPI: IRQ14 used by override.
[ 0.000000] ACPI: IRQ15 used by override.
[ 0.000000] Enabling APIC mode: Flat. Using 1 I/O APICs
[ 0.000000] Using ACPI (MADT) for SMP configuration information
[ 0.000000] Allocating PCI resources starting at 30000000 (gap: 20000000:b0000000)
[ 0.000000] Built 1 zonelists. Total pages: 130001
[ 0.000000] Kernel command line: root=UUID=46f20e71-49e4-4720-906c-47a1297e3884 ro quiet splash
[ 0.000000] mapped APIC to ffffd000 (fee00000)
[ 0.000000] mapped IOAPIC to ffffc000 (fec00000)
[ 0.000000] Enabling fast FPU save and restore... done.
[ 0.000000] Enabling unmasked SIMD FPU exception support... done.
[ 0.000000] Initializing CPU#0
[ 0.000000] PID hash table entries: 2048 (order: 11, 8192 bytes)
[ 0.000000] Detected 2010.348 MHz processor.
[ 25.096975] spurious 8259A interrupt: IRQ7.
[ 25.099023] Console: colour VGA+ 80x25
[ 25.099177] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
[ 25.099362] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
[ 25.107394] Memory: 507276k/524096k available (2015k kernel code, 16284k reserved, 916k data, 364k init, 0k highmem)
[ 25.107403] virtual kernel memory layout:
[ 25.107404] fixmap : 0xfff4d000 - 0xfffff000 ( 712 kB)
[ 25.107406] pkmap : 0xff800000 - 0xffc00000 (4096 kB)
[ 25.107407] vmalloc : 0xe0800000 - 0xff7fe000 ( 495 MB)
[ 25.107408] lowmem : 0xc0000000 - 0xdffd0000 ( 511 MB)
[ 25.107409] .init : 0xc03e3000 - 0xc043e000 ( 364 kB)
[ 25.107410] .data : 0xc02f7de6 - 0xc03dce84 ( 916 kB)
[ 25.107412] .text : 0xc0100000 - 0xc02f7de6 (2015 kB)
[ 25.107414] Checking if this processor honours the WP bit even in supervisor mode... Ok.
[ 25.107444] SLUB: Genslabs=22, HWalign=64, Order=0-1, MinObjects=4, CPUs=1, Nodes=1
[ 25.187407] Calibrating delay using timer specific routine.. 4024.09 BogoMIPS (lpj=8048197)
[ 25.187426] Security Framework v1.0.0 initialized
[ 25.187431] SELinux: Disabled at boot.
[ 25.187442] Mount-cache hash table entries: 512
[ 25.187527] CPU: After generic identify, caps: 078bfbff ebd3fbff 00000000 00000000 00002001 00000000 00000019
[ 25.187535] CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
[ 25.187537] CPU: L2 Cache: 256K (64 bytes/line)
[ 25.187540] CPU: After all inits, caps: 078bfbff ebd3fbff 00000000 00000410 00002001 00000000 00000019
[ 25.187547] Compat vDSO mapped to ffffe000.
[ 25.187555] Checking 'hlt' instruction... OK.
[ 25.203491] SMP alternatives: switching to UP code
[ 25.203649] Freeing SMP alternatives: 11k freed
[ 25.203894] Early unpacking initramfs... done
[ 25.516099] ACPI: Core revision 20070126
[ 25.516156] ACPI: Looking for DSDT in initramfs... error, file /DSDT.aml not found.
[ 25.518426] CPU0: AMD Sempron(tm) Processor 3600+ stepping 02
[ 25.518441] Total of 1 processors activated (4024.09 BogoMIPS).
[ 25.518679] ENABLING IO-APIC IRQs
[ 25.518893] ..TIMER: vector=0x31 apic1=0 pin1=0 apic2=-1 pin2=-1
[ 25.663128] Brought up 1 CPUs
[ 25.663233] Booting paravirtualized kernel on bare hardware
[ 25.663279] Time: 19:17:10 Date: 00/14/108
[ 25.663297] NET: Registered protocol family 16
[ 25.663365] EISA bus registered
[ 25.663375] ACPI: bus type pci registered
[ 25.663956] PCI: PCI BIOS revision 3.00 entry at 0xf0031, last bus=7
[ 25.663958] PCI: Using configuration type 1
[ 25.663960] Setting up standard PCI resources
[ 25.672449] ACPI: EC: Look up EC in DSDT
[ 25.677642] ACPI: Interpreter enabled
[ 25.677644] ACPI: (supports S0 S1 S3 S4 S5)
[ 25.677658] ACPI: Using IOAPIC for interrupt routing
[ 25.677842] Error attaching device data
[ 25.677847] Error attaching device data
[ 25.687273] ACPI: PCI Root Bridge [PCI0] (0000:00)
[ 25.687279] PCI: Probing PCI hardware (bus 00)
[ 25.687808] PCI: Transparent bridge - 0000:00:06.0
[ 25.688159] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
[ 25.688395] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P1._PRT]
[ 25.688540] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.BR10._PRT]
[ 25.688625] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.BR11._PRT]
[ 25.688710] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.BR12._PRT]
[ 25.688794] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.BR13._PRT]
[ 25.688879] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.BR14._PRT]
[ 25.688964] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.BR15._PRT]
[ 25.698045] ACPI: PCI Interrupt Link [LNKA] (IRQs 16 17 18 19) *0, disabled.
[ 25.698238] ACPI: PCI Interrupt Link [LNKB] (IRQs 16 17 18 19) *10
[ 25.698426] ACPI: PCI Interrupt Link [LNKC] (IRQs 16 17 18 19) *0, disabled.
[ 25.698614] ACPI: PCI Interrupt Link [LNKD] (IRQs 16 17 18 19) *0, disabled.
[ 25.698802] ACPI: PCI Interrupt Link [LNEA] (IRQs 16 17 18 19) *0, disabled.
[ 25.698990] ACPI: PCI Interrupt Link [LNEB] (IRQs 16 17 18 19) *10
[ 25.699206] ACPI: PCI Interrupt Link [LNEC] (IRQs 16 17 18 19) *0, disabled.
[ 25.699395] ACPI: PCI Interrupt Link [LNED] (IRQs 16 17 18 19) *0, disabled.
[ 25.699584] ACPI: PCI Interrupt Link [LUB0] (IRQs 20 21 22 23) *10
[ 25.699773] ACPI: PCI Interrupt Link [LMAD] (IRQs 20 21 22 23) *10
[ 25.699961] ACPI: PCI Interrupt Link [LUB2] (IRQs 20 21 22 23) *11
[ 25.700150] ACPI: PCI Interrupt Link [LMAC] (IRQs 20 21 22 23) *5
[ 25.700339] ACPI: PCI Interrupt Link [LAZA] (IRQs 20 21 22 23) *11
[ 25.700528] ACPI: PCI Interrupt Link [LSMB] (IRQs 20 21 22 23) *11
[ 25.700742] ACPI: PCI Interrupt Link [LPMU] (IRQs 20 21 22 23) *5
[ 25.700930] ACPI: PCI Interrupt Link [LSA0] (IRQs 20 21 22 23) *5
[ 25.701140] ACPI: PCI Interrupt Link [LSA1] (IRQs 20 21 22 23) *10
[ 25.701364] ACPI: PCI Interrupt Link [LATA] (IRQs 20 21 22 23) *0, disabled.
[ 25.701554] ACPI: PCI Interrupt Link [LSA2] (IRQs 20 21 22 23) *10
[ 25.701652] Linux Plug and Play Support v0.97 (c) Adam Belay
[ 25.701662] pnp: PnP ACPI init
[ 25.701670] ACPI: bus type pnp registered
[ 25.706691] pnp: PnP ACPI: found 16 devices
[ 25.706693] ACPI: ACPI bus type pnp unregistered
[ 25.706697] PnPBIOS: Disabled by ACPI PNP
[ 25.706737] PCI: Using ACPI for IRQ routing
[ 25.706740] PCI: If a device doesn't work, try "pci=routeirq". If it helps, post a report
[ 25.716670] NET: Registered protocol family 8
[ 25.716672] NET: Registered protocol family 20
[ 25.716729] pnp: 00:08: iomem range 0xfbe80000-0xfbebffff has been reserved
[ 25.716732] pnp: 00:08: iomem range 0xfee01000-0xfeefffff could not be reserved
[ 25.716737] pnp: 00:09: iomem range 0xfec00000-0xfec00fff could not be reserved
[ 25.716740] pnp: 00:09: iomem range 0xfee00000-0xfee00fff could not be reserved
[ 25.716746] pnp: 00:0c: ioport range 0xa00-0xa0f has been reserved
[ 25.716749] pnp: 00:0c: ioport range 0xa10-0xa1f has been reserved
[ 25.716756] pnp: 00:0d: iomem range 0xd0000000-0xdfffffff could not be reserved
[ 25.716760] pnp: 00:0e: iomem range 0xe0000000-0xefffffff has been reserved
[ 25.716765] pnp: 00:0f: iomem range 0x0-0x9ffff could not be reserved
[ 25.716767] pnp: 00:0f: iomem range 0xc0000-0xcffff could not be reserved
[ 25.716770] pnp: 00:0f: iomem range 0xe0000-0xfffff could not be reserved
[ 25.716773] pnp: 00:0f: iomem range 0x100000-0x1fffffff could not be reserved
[ 25.719063] Time: tsc clocksource has been installed.
[ 25.746977] PCI: Bridge: 0000:00:06.0
[ 25.746979] IO window: e000-efff
[ 25.746982] MEM window: fbf00000-fbffffff
[ 25.746985] PREFETCH window: 30000000-300fffff
[ 25.746988] PCI: Bridge: 0000:00:0a.0
[ 25.746989] IO window: disabled.
[ 25.746991] MEM window: disabled.
[ 25.746993] PREFETCH window: disabled.
[ 25.746995] PCI: Bridge: 0000:00:0b.0
[ 25.746996] IO window: disabled.
[ 25.746999] MEM window: disabled.
[ 25.747000] PREFETCH window: disabled.
[ 25.747003] PCI: Bridge: 0000:00:0c.0
[ 25.747004] IO window: disabled.
[ 25.747006] MEM window: disabled.
[ 25.747008] PREFETCH window: disabled.
[ 25.747010] PCI: Bridge: 0000:00:0d.0
[ 25.747011] IO window: disabled.
[ 25.747014] MEM window: disabled.
[ 25.747015] PREFETCH window: disabled.
[ 25.747018] PCI: Bridge: 0000:00:0e.0
[ 25.747019] IO window: disabled.
[ 25.747021] MEM window: disabled.
[ 25.747023] PREFETCH window: disabled.
[ 25.747025] PCI: Bridge: 0000:00:0f.0
[ 25.747027] IO window: disabled.
[ 25.747029] MEM window: fc000000-febfffff
[ 25.747032] PREFETCH window: f0000000-f7ffffff
[ 25.747040] PCI: Setting latency timer of device 0000:00:06.0 to 64
[ 25.747049] PCI: Setting latency timer of device 0000:00:0a.0 to 64
[ 25.747055] PCI: Setting latency timer of device 0000:00:0b.0 to 64
[ 25.747061] PCI: Setting latency timer of device 0000:00:0c.0 to 64
[ 25.747067] PCI: Setting latency timer of device 0000:00:0d.0 to 64
[ 25.747072] PCI: Setting latency timer of device 0000:00:0e.0 to 64
[ 25.747078] PCI: Setting latency timer of device 0000:00:0f.0 to 64
[ 25.747090] NET: Registered protocol family 2
[ 25.787049] IP route cache hash table entries: 4096 (order: 2, 16384 bytes)
[ 25.787088] TCP established hash table entries: 16384 (order: 5, 196608 bytes)
[ 25.787212] TCP bind hash table entries: 16384 (order: 5, 131072 bytes)
[ 25.787306] TCP: Hash tables configured (established 16384 bind 16384)
[ 25.787308] TCP reno registered
[ 25.799117] checking if image is initramfs... it is
[ 26.246717] Switched to high resolution mode on CPU 0
[ 26.415055] Freeing initrd memory: 7909k freed
[ 26.415348] audit: initializing netlink socket (disabled)
[ 26.415358] audit(1200338230.012:1): initialized
[ 26.416747] VFS: Disk quotas dquot_6.5.1
[ 26.416785] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 26.416861] io scheduler noop registered
[ 26.416863] io scheduler anticipatory registered
[ 26.416865] io scheduler deadline registered
[ 26.416878] io scheduler cfq registered (default)
[ 26.942137] Boot video device is 0000:07:00.0
[ 26.942207] PCI: Setting latency timer of device 0000:00:0a.0 to 64
[ 26.942227] assign_interrupt_mode Found MSI capability
[ 26.942230] Allocate Port Service[0000:00:0a.0

cie00]
[ 26.942282] PCI: Setting latency timer of device 0000:00:0b.0 to 64
[ 26.942302] assign_interrupt_mode Found MSI capability
[ 26.942304] Allocate Port Service[0000:00:0b.0

cie00]
[ 26.942348] PCI: Setting latency timer of device 0000:00:0c.0 to 64
[ 26.942367] assign_interrupt_mode Found MSI capability
[ 26.942369] Allocate Port Service[0000:00:0c.0

cie00]
[ 26.942413] PCI: Setting latency timer of device 0000:00:0d.0 to 64
[ 26.942433] assign_interrupt_mode Found MSI capability
[ 26.942435] Allocate Port Service[0000:00:0d.0

cie00]
[ 26.942481] PCI: Setting latency timer of device 0000:00:0e.0 to 64
[ 26.942500] assign_interrupt_mode Found MSI capability
[ 26.942502] Allocate Port Service[0000:00:0e.0

cie00]
[ 26.942546] PCI: Setting latency timer of device 0000:00:0f.0 to 64
[ 26.942565] assign_interrupt_mode Found MSI capability
[ 26.942567] Allocate Port Service[0000:00:0f.0

cie00]
[ 26.942655] isapnp: Scanning for PnP cards...
[ 27.295198] isapnp: No Plug & Play device found
[ 27.316584] Real Time Clock Driver v1.12ac
[ 27.316659] Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ