I'm also suffering from this bug - I found that none of the users (my user or root) had the ability to use audio devices in System > Administration > Users and Groups > Properties, or belonged to the groups pulse, pulse-access or pulse-rt - this must be some kind of indicator of the problem, but when I enabled all these features I was still stuck without sound - I do not know enough to about Ubuntu to know if there is anything else that should obviously be enabled in order to have sound. I found the following operating systems don't have sound on this laptop: Ubuntu 8.10, Linux Mint 6, Fedora 10 and OpenSuse 11. Windows Vista, however, does. But Vista is my last resort (that probably goes for all of us). My results of the alsa-info.sh script are here: http://www.alsa-project.org/db/?f=849dc970f609153856aae12d370f893952af98f0 Here's some more info (I don't know if it's needed or not): Code: wilf@drsuave:~$ lspci 00:00.0 Host bridge: Intel Corporation Mobile PM965/GM965/GL960 Memory Controller Hub (rev 03) 00:01.0 PCI bridge: Intel Corporation Mobile PM965/GM965/GL960 PCI Express Root Port (rev 03) 00:1a.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #4 (rev 04) 00:1a.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #5 (rev 04) 00:1a.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #2 (rev 04) 00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 04) 00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1 (rev 04) 00:1c.1 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 2 (rev 04) 00:1c.2 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 3 (rev 04) 00:1d.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #1 (rev 04) 00:1d.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #2 (rev 04) 00:1d.2 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #3 (rev 04) 00:1d.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #1 (rev 04) 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev f4) 00:1f.0 ISA bridge: Intel Corporation 82801HEM (ICH8M) LPC Interface Controller (rev 04) 00:1f.1 IDE interface: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) IDE Controller (rev 04) 00:1f.2 SATA controller: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) SATA AHCI Controller (rev 04) 00:1f.3 SMBus: Intel Corporation 82801H (ICH8 Family) SMBus Controller (rev 04) 01:00.0 VGA compatible controller: ATI Technologies Inc Radeon HD 2400 XT 01:00.1 Audio device: ATI Technologies Inc RV610 audio device [Radeon HD 2400 PRO] 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 01) 04:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02) Code: wilf@drsuave:~$ lsusb Bus 007 Device 007: ID 07b3:0900 Plustek, Inc. Bus 007 Device 006: ID 04a9:10c9 Canon, Inc. Bus 007 Device 004: ID 0bda:0158 Realtek Semiconductor Corp. Mass Stroage Device Bus 007 Device 003: ID 04b4:6830 Cypress Semiconductor Corp. CY7C68300A EZ-USB AT2 USB 2.0 to ATA/ATAPI Bus 007 Device 002: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB Bus 007 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 003: ID 0c45:62c0 Microdia Pavilion Webcam Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 006 Device 002: ID 147e:2016 Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 002 Device 002: ID 046d:c018 Logitech, Inc. Optical Wheel Mouse Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 002: ID 0a5c:2101 Broadcom Corp. A-Link BlueUsbA2 Bluetooth Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Code: wilf@drsuave:~$ cat /proc/asound/cards 0 [Intel ]: HDA-Intel - HDA Intel HDA Intel at 0xfb300000 irq 22 1 [HDMI ]: HDA-Intel - HDA ATI HDMI HDA ATI HDMI at 0xfb010000 irq 17 Code: wilf@drsuave:~$ cat /proc/asound/modules 0 snd_hda_intel 1 snd_hda_intel Code: wilf@drsuave:~$ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: Intel [HDA Intel], device 0: HDA Generic [HDA Generic] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: HDMI [HDA ATI HDMI], device 3: ATI HDMI [ATI HDMI] Subdevices: 1/1 Subdevice #0: subdevice #0 Code: wilf@drsuave:~$ arecord -l **** List of CAPTURE Hardware Devices **** card 0: Intel [HDA Intel], device 0: HDA Generic [HDA Generic] Subdevices: 1/1 Subdevice #0: subdevice #0 I'm more then happy to provide more information if needed. This model of laptop is the one given to disabled students in Britain, so I would think it's very important that a fix is found!