사운드 드라이브 관련 질문 합니다

초보인데 사운드가 나오지 않아 질문 드립니다.
터미널로 보면 사운드가 잡혀 있는데 나오지 않습니다.
노트북이구요 도시바 세틀라이트 l30모델입니다.
도와 주세욤 ㅠㅠ
os는 루분투 사용 중입니다.

hhj@hhjpc:~$ lspci
00:00.0 Host bridge: Advanced Micro Devices [AMD] nee ATI Device 5a31 (rev 01)
00:01.0 PCI bridge: Advanced Micro Devices [AMD] nee ATI RS480 PCI Bridge
00:12.0 IDE interface: Advanced Micro Devices [AMD] nee ATI IXP SB400 Serial ATA Controller (rev 80)
00:13.0 USB controller: Advanced Micro Devices [AMD] nee ATI IXP SB400 USB Host Controller (rev 80)
00:13.1 USB controller: Advanced Micro Devices [AMD] nee ATI IXP SB400 USB Host Controller (rev 80)
00:13.2 USB controller: Advanced Micro Devices [AMD] nee ATI IXP SB400 USB2 Host Controller (rev 80)
00:14.0 SMBus: Advanced Micro Devices [AMD] nee ATI IXP SB400 SMBus Controller (rev 82)
00:14.1 IDE interface: Advanced Micro Devices [AMD] nee ATI IXP SB400 IDE Controller (rev 80)
00:14.2 Audio device: Advanced Micro Devices [AMD] nee ATI IXP SB4x0 High Definition Audio Controller (rev 01)
00:14.3 ISA bridge: Advanced Micro Devices [AMD] nee ATI IXP SB400 PCI-ISA Bridge (rev 80)
00:14.4 PCI bridge: Advanced Micro Devices [AMD] nee ATI IXP SB400 PCI-PCI Bridge (rev 80)
01:05.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI RC410 [Radeon Xpress 200M]
09:01.0 CardBus bridge: ENE Technology Inc CB1410 Cardbus Controller (rev 01)
09:02.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
09:04.0 Ethernet controller: Atheros Communications Inc. AR5413/AR5414 Wireless Network Adapter [AR5006X(S) 802.11abg] (rev 01)