ATI 声卡问题

本人菜鸟一个，刚装上了feroda7.0后，发现没有声音，我的声卡是 ATI的，报告的错误现象如下，请问高手们这是怎么回事 ？怎样处理这种问题呀！急呀
------ System Config Soundcard Log --------
2007年 10月 28日 星期日 21:20:31 CST

------- lspci --------
00:00.0 Host bridge: ATI Technologies Inc Unknown device 7910
00:01.0 PCI bridge: ATI Technologies Inc Unknown device 7912
00:07.0 PCI bridge: ATI Technologies Inc Unknown device 7917
00:12.0 SATA controller: ATI Technologies Inc SB600 Non-Raid-5 SATA
00:13.0 USB Controller: ATI Technologies Inc SB600 USB (OHCI0)
00:13.1 USB Controller: ATI Technologies Inc SB600 USB (OHCI1)
00:13.2 USB Controller: ATI Technologies Inc SB600 USB (OHCI2)
00:13.3 USB Controller: ATI Technologies Inc SB600 USB (OHCI3)
00:13.4 USB Controller: ATI Technologies Inc SB600 USB (OHCI4)
00:13.5 USB Controller: ATI Technologies Inc SB600 USB Controller (EHCI)
00:14.0 SMBus: ATI Technologies Inc SB600 SMBus (rev 14)
00:14.1 IDE interface: ATI Technologies Inc SB600 IDE
00:14.3 ISA bridge: ATI Technologies Inc SB600 PCI to LPC Bridge
00:14.4 PCI bridge: ATI Technologies Inc SB600 PCI to PCI Bridge
00:14.5 Multimedia audio controller: ATI Technologies Inc SB600 AC97 Audio
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Confile:///home/jason/%E6%A1%8C%E9%9D%A2/Screenshot-%E9%94%99%E8%AF%AF.png
figuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
"scsconfig.log" 1278L, 41659C

　　　　　　

00:14.5 Multimedia audio controller: ATI Technologies Inc SB600 AC97 Audio
这不是表示认识到声卡了吗？
您再使用音量设置看看？