As vezes minha placa de som é detectada, as vezes não

[Darcamo]

Minha placa de som sempre foi detectada desde que comecei a usar Ubuntu com o Hoary (é um notebook Toshiba A60). No entanto no Edgy tô com um probleminha chato de as vezes ela não ser detectada.

Segue abaixo a saída do dmesg

...
[17179602.160000] atiixp-modem: codec acquire timeout
[17179602.160000] atiixp-modem: codec acquire timeout
[17179602.164000] AC'97 2 does not respond - RESET
[17179602.168000] atiixp-modem: codec acquire timeout
[17179602.168000] atiixp-modem: codec acquire timeout
[17179602.168000] AC'97 2 access is not valid [0xffffffff], removing mixer.
[17179602.168000] atiixp-modem: no codec available
[17179602.168000] ACPI: PCI interrupt for device 0000:00:14.6 disabled
[17179602.320000] lp0: using parport0 (interrupt-driven).
[17179602.416000] p4-clockmod: P4/Xeon(TM) CPU On-Demand Clock Modulation available
[17179602.480000] Adding 257032k swap on /dev/hda3.  Priority:-1 extents:1 across:257032k
[17179602.540000] EXT3 FS on hda1, internal journal
[17179602.812000] kjournald starting.  Commit interval 5 seconds
[17179602.820000] EXT3 FS on hda2, internal journal
[17179602.820000] EXT3-fs: mounted filesystem with ordered data mode.
[17179604.460000] ACPI: AC Adapter [AC] (off-line)
[17179604.540000] ACPI: Battery Slot [BAT1] (battery present)
[17179604.560000] ACPI: Power Button (FF) [PWRF]
[17179604.560000] ACPI: Lid Switch [LID]
[17179604.560000] ACPI: Power Button (CM) [PWRB]
[17179604.712000] ibm_acpi: ec object not found
[17179604.760000] pcc_acpi: loading...
[17179609.356000] [drm] Initialized drm 1.0.1 20051102
[17179609.368000] ACPI: PCI Interrupt 0000:01:05.0[A] -> GSI 16 (level, low) -> IRQ 193
[17179609.372000] [drm] Initialized radeon 1.25.0 20060524 on minor 0
[17179610.532000] mtrr: 0xa0000000,0x8000000 overlaps existing 0xa0000000,0x4000000
[17179610.536000] mtrr: 0xa0000000,0x8000000 overlaps existing 0xa0000000,0x4000000
[17179610.536000] mtrr: 0xa0000000,0x8000000 overlaps existing 0xa0000000,0x4000000
[17179610.536000] agpgart: Found an AGP 2.0 compliant device at 0000:00:00.0.
[17179610.536000] agpgart: Putting AGP V2 device at 0000:00:00.0 into 4x mode
[17179610.536000] agpgart: Putting AGP V2 device at 0000:01:05.0 into 4x mode
[17179610.728000] [drm] Setting GART location based on new memory map
[17179610.728000] [drm] writeback test succeeded in 1 usecs
[17179614.328000] apm: BIOS version 1.2 Flags 0x03 (Driver version 1.16ac)
[17179614.328000] apm: disabled - APM is not SMP safe.
[17179620.460000] NET: Registered protocol family 10
[17179620.460000] lo: Disabled Privacy Extensions
[17179620.460000] IPv6 over IPv4 tunneling driver
[17179621.796000] eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
[17179624.828000] NET: Registered protocol family 17
[17179624.984000] Bluetooth: Core ver 2.8
[17179624.984000] NET: Registered protocol family 31
[17179624.984000] Bluetooth: HCI device and connection manager initialized
[17179624.984000] Bluetooth: HCI socket layer initialized
[17179625.036000] Bluetooth: L2CAP ver 2.8
[17179625.036000] Bluetooth: L2CAP socket layer initialized
[17179625.180000] Bluetooth: RFCOMM socket layer initialized
[17179625.180000] Bluetooth: RFCOMM TTY layer initialized
[17179625.180000] Bluetooth: RFCOMM ver 1.7
[17179630.768000] ath0: no IPv6 routers present
[17179637.924000] eth0: no IPv6 routers present

Como pode ser visto, alguma coisa deu errado quando ele tentou incluir o módulo para o som resultando nesses timeouts.

Segue abaixo a saída do lspci (não vejo nada de errado aqui)

00:00.0 Host bridge: ATI Technologies Inc R200 AGP Bridge [Mobility Radeon 7000 IGP] (rev 05)
00:01.0 PCI bridge: ATI Technologies Inc PCI Bridge [IGP 340M]
00:13.0 USB Controller: ATI Technologies Inc OHCI USB Controller #1 (rev 01)
00:13.1 USB Controller: ATI Technologies Inc OHCI USB Controller #2 (rev 01)
00:13.2 USB Controller: ATI Technologies Inc EHCI USB Controller (rev 01)
00:14.0 SMBus: ATI Technologies Inc ATI SMBus (rev 18)
00:14.1 IDE interface: ATI Technologies Inc ATI Dual Channel Bus Master PCI IDE Controller
00:14.3 ISA bridge: ATI Technologies Inc Unknown device 434c
00:14.4 PCI bridge: ATI Technologies Inc Unknown device 4342
00:14.5 Multimedia audio controller: ATI Technologies Inc IXP150 AC'97 Audio Controller
00:14.6 Modem: ATI Technologies Inc IXP AC'97 Modem (rev 01)
01:05.0 VGA compatible controller: ATI Technologies Inc Radeon Mobility 7000 IGP
02:04.0 Ethernet controller: Atheros Communications, Inc. AR5212 802.11abg NIC (rev 01)
02:06.0 CardBus bridge: Texas Instruments PCI1410 PC card Cardbus Controller (rev 02)
02:07.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)

Se eu reiniciar o som volta a funcionar, mas gostaria de saber se não há uma maneira de redetectar o hardware sem reboot.