Poste aqui o resultados completos dos seguintes comandos no terminal (Ctrl + Alt + T), um de cada vez:
sudo lspci
sudo lsusb
uname -a
lspci | grep -i audio
cat /proc/asound/pcm
00:00.0 RAM memory: NVIDIA Corporation MCP67 Memory Controller (rev a2)
00:01.0 ISA bridge: NVIDIA Corporation MCP67 ISA Bridge (rev a2)
00:01.1 SMBus: NVIDIA Corporation MCP67 SMBus (rev a2)
00:01.2 RAM memory: NVIDIA Corporation MCP67 Memory Controller (rev a2)
00:01.3 Co-processor: NVIDIA Corporation MCP67 Co-processor (rev a2)
00:02.0 USB controller: NVIDIA Corporation MCP67 OHCI USB 1.1 Controller (rev a2)
00:02.1 USB controller: NVIDIA Corporation MCP67 EHCI USB 2.0 Controller (rev a2)
00:04.0 USB controller: NVIDIA Corporation MCP67 OHCI USB 1.1 Controller (rev a2)
00:04.1 USB controller: NVIDIA Corporation MCP67 EHCI USB 2.0 Controller (rev a2)
00:07.0 Audio device: NVIDIA Corporation MCP67 High Definition Audio (rev a1)
00:08.0 PCI bridge: NVIDIA Corporation MCP67 PCI Bridge (rev a2)
00:09.0 IDE interface: NVIDIA Corporation MCP67 AHCI Controller (rev a2)
00:0a.0 Ethernet controller: NVIDIA Corporation MCP67 Ethernet (rev a2)
00:0c.0 PCI bridge: NVIDIA Corporation MCP67 PCI Express Bridge (rev a2)
00:12.0 VGA compatible controller: NVIDIA Corporation C67 [GeForce 7000M / nForce 610M] (rev a2)
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
01:09.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 05)
01:09.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 22)
01:09.2 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 12)
01:09.3 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev 12)
Bus 002 Device 002: ID 064e:a101 Suyin Corp. Acer CrystalEye Webcam
Bus 003 Device 002: ID 04fc:0801 Sunplus Technology Co., Ltd
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Linux camila-laptop 3.4.0-030400-generic-pae #201205210521 SMP Mon May 21 09:35:19 UTC 2012 i686 athlon i386 GNU/Linux
00:07.0 Audio device: NVIDIA Corporation MCP67 High Definition Audio (rev a1)
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