Pas de son / carte Intel / Kubuntu

Bonjour,
Hello a tous et toutes je suis sur un Laptop Toshiba Satellite P100-343 et je viens d'installer Kubuntu et je n'ai pas de son,
je suis vraiment un novice pouvez-vous me sortir de cette impasse,merci déjà à toutes les personnes qui vont me répondre.

Voici ce que j'ai dans mon "lspci"

root@Roy:~# lspci -v
00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS/940GML and 945GT Express Memory Controller Hub (rev 03)
Subsystem: Toshiba America Info Systems Unknown device ff31
Flags: bus master, fast devsel, latency 0
Capabilities: [e0] Vendor Specific Information

00:01.0 PCI bridge: Intel Corporation Mobile 945GM/PM/GMS/940GML and 945GT Express PCI Express Root Port (rev 03) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
I/O behind bridge: 00002000-00002fff
Memory behind bridge: d0000000-d1ffffff
Prefetchable memory behind bridge: 00000000c0000000-00000000cfffffff
Capabilities: [88] Subsystem: Toshiba America Info Systems Unknown device ff31
Capabilities: [80] Power Management version 2
Capabilities: [90] Message Signalled Interrupts: Mask- 64bit- Queue=0/0 Enable-
Capabilities: [a0] Express Root Port (Slot+) IRQ 0

00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 02)
Subsystem: Toshiba America Info Systems Unknown device ff31
Flags: bus master, fast devsel, latency 0, IRQ 21
Memory at d2500000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 2
Capabilities: [60] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable-
Capabilities: [70] Express Unknown type IRQ 0

00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 02) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
I/O behind bridge: 00003000-00003fff
Memory behind bridge: 8c000000-8c0fffff
Capabilities: [40] Express Root Port (Slot+) IRQ 0
Capabilities: [80] Message Signalled Interrupts: Mask- 64bit- Queue=0/0 Enable-
Capabilities: [90] Subsystem: Toshiba America Info Systems Unknown device ff31
Capabilities: [a0] Power Management version 2

00:1c.1 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 2 (rev 02) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
Memory behind bridge: 8c100000-8c1fffff
Capabilities: [40] Express Root Port (Slot+) IRQ 0
Capabilities: [80] Message Signalled Interrupts: Mask- 64bit- Queue=0/0 Enable-
Capabilities: [90] Subsystem: Toshiba America Info Systems Unknown device ff31
Capabilities: [a0] Power Management version 2

00:1c.2 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 3 (rev 02) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=04, subordinate=04, sec-latency=0
Capabilities: [40] Express Root Port (Slot+) IRQ 0
Capabilities: [80] Message Signalled Interrupts: Mask- 64bit- Queue=0/0 Enable-
Capabilities: [90] Subsystem: Toshiba America Info Systems Unknown device ff31
Capabilities: [a0] Power Management version 2

00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #1 (rev 02) (prog-if 00 [UHCI])
Subsystem: Toshiba America Info Systems Unknown device ff31
Flags: bus master, medium devsel, latency 0, IRQ 19
I/O ports at 1800 [size=32]

00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #2 (rev 02) (prog-if 00 [UHCI])
Subsystem: Toshiba America Info Systems Unknown device ff31
Flags: bus master, medium devsel, latency 0, IRQ 20
I/O ports at 1820 [size=32]

00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #3 (rev 02) (prog-if 00 [UHCI])
Subsystem: Toshiba America Info Systems Unknown device ff31
Flags: bus master, medium devsel, latency 0, IRQ 18
I/O ports at 1840 [size=32]

00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #4 (rev 02) (prog-if 00 [UHCI])
Subsystem: Toshiba America Info Systems Unknown device ff31
Flags: bus master, medium devsel, latency 0, IRQ 16
I/O ports at 1860 [size=32]

00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 02) (prog-if 20 [EHCI])
Subsystem: Toshiba America Info Systems Unknown device ff31
Flags: bus master, medium devsel, latency 0, IRQ 19
Memory at d2504000 (32-bit, non-prefetchable) [size=1K]
Capabilities: [50] Power Management version 2
Capabilities: [58] Debug port

00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2) (prog-if 01 [Subtractive decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=0a, subordinate=0e, sec-latency=32
I/O behind bridge: 00004000-00004fff
Memory behind bridge: d2100000-d21fffff
Prefetchable memory behind bridge: 0000000088000000-000000008bffffff
Capabilities: [50] Subsystem: Toshiba America Info Systems Unknown device ff31

00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 02)
Subsystem: Toshiba America Info Systems Unknown device ff31
Flags: bus master, medium devsel, latency 0
Capabilities: [e0] Vendor Specific Information

00:1f.2 IDE interface: Intel Corporation 82801GBM/GHM (ICH7 Family) Serial ATA Storage Controller IDE (rev 02) (prog-if 80 [Master])
Subsystem: Toshiba America Info Systems Unknown device ff31
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 20
I/O ports at 01f0 [size=8]
I/O ports at 03f4 [size=1]
I/O ports at 0170 [size=8]
I/O ports at 0374 [size=1]
I/O ports at 18b0 [size=16]
Capabilities: [70] Power Management version 2

00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 02)
Subsystem: Toshiba America Info Systems Unknown device ff31
Flags: medium devsel, IRQ 11
I/O ports at 18c0 [size=32]

01:00.0 VGA compatible controller: nVidia Corporation G70 [GeForce Go 7600] (rev a1) (prog-if 00 [VGA])
Subsystem: Toshiba America Info Systems Unknown device ff31
Flags: bus master, fast devsel, latency 0, IRQ 11
Memory at d1000000 (32-bit, non-prefetchable) [size=16M]
Memory at c0000000 (64-bit, prefetchable) [size=256M]
Memory at d0000000 (64-bit, non-prefetchable) [size=16M]
I/O ports at 2000 [size=128]
Capabilities: [60] Power Management version 2
Capabilities: [68] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable-
Capabilities: [78] Express Endpoint IRQ 0

02:00.0 Ethernet controller: Intel Corporation 82573L Gigabit Ethernet Controller
Subsystem: Toshiba America Info Systems Unknown device ff31
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at 8c000000 (32-bit, non-prefetchable) [size=128K]
I/O ports at 3000 [size=32]
Capabilities: [c8] Power Management version 2
Capabilities: [d0] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable-
Capabilities: [e0] Express Endpoint IRQ 0

03:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG Network Connection (rev 02)
Subsystem: Intel Corporation Unknown device 1041
Flags: bus master, fast devsel, latency 0, IRQ 17
Memory at 8c100000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [c8] Power Management version 2
Capabilities: [d0] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable-
Capabilities: [e0] Express Legacy Endpoint IRQ 0

0a:04.0 CardBus bridge: Texas Instruments PCIxx12 Cardbus Controller
Subsystem: Toshiba America Info Systems Unknown device ff31
Flags: bus master, medium devsel, latency 168, IRQ 17
Memory at d2100000 (32-bit, non-prefetchable) [size=4K]
Bus: primary=0a, secondary=0b, subordinate=0e, sec-latency=176
Memory window 0: 88000000-8bfff000 (prefetchable)
Memory window 1: 90000000-93fff000
I/O window 0: 00004000-000040ff
I/O window 1: 00004400-000044ff
16-bit legacy interface ports at 0001

0a:04.1 FireWire (IEEE 1394): Texas Instruments PCIxx12 OHCI Compliant IEEE 1394 Host Controller (prog-if 10 [OHCI])
Subsystem: Toshiba America Info Systems Unknown device ff31
Flags: bus master, medium devsel, latency 64, IRQ 17
Memory at d2102000 (32-bit, non-prefetchable) [size=2K]
Memory at d2104000 (32-bit, non-prefetchable) [size=16K]
Capabilities: [44] Power Management version 2

0a:04.2 Mass storage controller: Texas Instruments 5-in-1 Multimedia Card Reader (SD/MMC/MS/MS PRO/xD)
Subsystem: Toshiba America Info Systems Unknown device ff31
Flags: bus master, medium devsel, latency 64, IRQ 17
Memory at d2101000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [44] Power Management version 2

0a:04.3 Generic system peripheral [0805]: Texas Instruments PCIxx12 SDA Standard Compliant SD Host Controller (prog-if 01)
Subsystem: Toshiba America Info Systems Unknown device ff31
Flags: bus master, medium devsel, latency 64, IRQ 17
Memory at d2102800 (32-bit, non-prefetchable) [size=256]
Capabilities: [80] Power Management version 2