Hello, I have the same problem (after rebooting!), but with a i386 system. alsaconf and recompilation of alsa-drivers and alsa-utils didn't help at all. The only thing which helped immediately was a downgrade to linux-2.6.11.4-20a. Sound works after reboot! System: 0000:00:00.0 Host bridge: Silicon Integrated Systems [SiS] 746 Host (rev 02) 0000:00:01.0 PCI bridge: Silicon Integrated Systems [SiS] SG86C202 0000:00:02.0 ISA bridge: Silicon Integrated Systems [SiS] SiS963 [MuTIOL Media IO] (rev 25) 0000:00:02.1 SMBus: Silicon Integrated Systems [SiS] SiS961/2 SMBus Controller 0000:00:02.5 IDE interface: Silicon Integrated Systems [SiS] 5513 [IDE] 0000:00:02.7 Multimedia audio controller: Silicon Integrated Systems [SiS] Sound Controller (rev a0) 0000:00:03.0 USB Controller: Silicon Integrated Systems [SiS] USB 1.0 Controller (rev 0f) 0000:00:03.1 USB Controller: Silicon Integrated Systems [SiS] USB 1.0 Controller (rev 0f) 0000:00:03.2 USB Controller: Silicon Integrated Systems [SiS] USB 2.0 Controller 0000:00:04.0 Ethernet controller: Silicon Integrated Systems [SiS] SiS900 PCI Fast Ethernet (rev 91) 0000:00:0c.0 Network controller: AVM Audiovisuelles MKTG & Computer System GmbH A1 ISDN [Fritz] (rev 02) 0000:00:0d.0 Unknown mass storage controller: Promise Technology, Inc. PDC20268 (Ultra100 TX2) (rev 01) 0000:01:00.0 VGA compatible controller: ATI Technologies Inc RV350 AP [Radeon 9600] 0000:01:00.1 Display controller: ATI Technologies Inc RV350 AP [Radeon 9600] (Secondary) Sound module is: snd_intel8x0 No Messages in /var/log/messages when sound was *not* working. Michael Traxler