Kacper , thank you for your time. I have sound but sometimes after playing a youtube video music stops playing from totem, etc. Below is what I am doing and what the "problems" are. Nikos ### # get alsa source code wget ftp://ftp.alsa-project.org/pub/driver/alsa-driver-1.0.19.tar.bz2 [...] 2009-05-15 13:33:30 (860 KB/s) - `alsa-driver-1.0.19.tar.bz2' saved [2896328] # get patch (written by Kacper Szczesniak) wget http://launchpadlibrarian.net/26521394/alsa-driver-1.0.19-mb51.patch [...] 2009-05-15 13:33:36 (147 KB/s) - `alsa-driver-1.0.19-mb51.patch' saved [4486/4486] # unpack alsa source code tar jxf ./alsa-driver-1.0.19.tar.bz2 # move patch in alsa source code directory mv ./alsa-driver-1.0.19-mb51.patch ./alsa-driver-1.0.19 # apply the patch patch -p1 < ./alsa-driver-1.0.19-mb51.patch patching file alsa-kernel/pci/hda/patch_realtek.c # compile source code ## configure ./configure [...] config.status: creating version config.status: creating Makefile.conf config.status: WARNING: Makefile.conf.in seems to ignore the --datarootdir setting config.status: creating snddevices config.status: creating utils/alsa-driver.spec config.status: creating utils/buildrpm config.status: creating toplevel.config config.status: creating utils/alsasound config.status: creating utils/alsasound.posix config.status: creating include/pci_ids_compat.h config.status: creating include/i2c-id_compat.h config.status: creating include/config.h config.status: creating include/config1.h config.status: creating include/version.h config.status: include/version.h is unchanged config.status: creating include/autoconf-extra.h Hacking autoconf.h... ## compile make [...] ALSA modules were successfully compiled. ## install sudo make install [...] WARNING!!! The mixer channels for the ALSA driver are muted by default!!! ************************************************************************** You would use some ALSA or OSS mixer to set the appropriate volume. # check /etc/modprobe.d/options cat /etc/modprobe.d/options options hid_apple fnmode=2 # rebooting... ########### # After booting... ########### # running alsamixer from the Terminal alsamixer alsamixer: function snd_ctl_open failed for default: No such device # checking gui volume control [a] # screenshot attached ## more (ir)relevant screenshots [b][c] # note: all "tracks" under Preferences are selected ### [a] http://www.imageshack.gr/view.php?file=aphdfom34nm9mtjy5jsy.png [b] http://www.imageshack.gr/view.php?file=ls63elst28433vmbvl15.png [c] http://www.imageshack.gr/view.php?file=ef9glyvvp80ajr2693at.png ### # speaker-test speaker-test -Dsurround51 -c6 speaker-test 1.0.18 Playback device is surround51 Stream parameters are 48000Hz, S16_LE, 6 channels Using 16 octaves of pink noise I: caps.c: Limited capabilities successfully to CAP_SYS_NICE. I: caps.c: Dropping root privileges. I: caps.c: Limited capabilities successfully to CAP_SYS_NICE. ALSA lib confmisc.c:768:(parse_card) cannot find card 'Nvidia' ALSA lib conf.c:3513:(_snd_config_evaluate) function snd_func_card_driver returned error: No such device ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings ALSA lib conf.c:3513:(_snd_config_evaluate) function snd_func_concat returned error: No such device ALSA lib confmisc.c:1251:(snd_func_refer) error evaluating name ALSA lib conf.c:3513:(_snd_config_evaluate) function snd_func_refer returned error: No such device ALSA lib conf.c:3985:(snd_config_expand) Evaluate error: No such device ALSA lib pcm.c:2205:(snd_pcm_open_noupdate) Unknown PCM surround51 Playback open error: -19,No such device ALSA lib confmisc.c:768:(parse_card) cannot find card 'Nvidia' ALSA lib conf.c:3513:(_snd_config_evaluate) function snd_func_card_driver returned error: No such device ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings ALSA lib conf.c:3513:(_snd_config_evaluate) function snd_func_concat returned error: No such device ALSA lib confmisc.c:1251:(snd_func_refer) error evaluating name ALSA lib conf.c:3513:(_snd_config_evaluate) function snd_func_refer returned error: No such device ALSA lib conf.c:3985:(snd_config_expand) Evaluate error: No such device ALSA lib pcm.c:2205:(snd_pcm_open_noupdate) Unknown PCM surround51 Playback open error: -19,No such device ALSA lib confmisc.c:768:(parse_card) cannot find card 'Nvidia' ALSA lib conf.c:3513:(_snd_config_evaluate) function snd_func_card_driver returned error: No such device ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings ALSA lib conf.c:3513:(_snd_config_evaluate) function snd_func_concat returned error: No such device ALSA lib confmisc.c:1251:(snd_func_refer) error evaluating name ALSA lib conf.c:3513:(_snd_config_evaluate) function snd_func_refer returned error: No such device ALSA lib conf.c:3985:(snd_config_expand) Evaluate error: No such device ALSA lib pcm.c:2205:(snd_pcm_open_noupdate) Unknown PCM surround51 Playback open error: -19,No such device ALSA lib confmisc.c:768:(parse_card) cannot find card 'Nvidia' ALSA lib conf.c:3513:(_snd_config_evaluate) function snd_func_card_driver returned error: No such device ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings ALSA lib conf.c:3513:(_snd_config_evaluate) function snd_func_concat returned error: No such device ALSA lib confmisc.c:1251:(snd_func_refer) error evaluating name ALSA lib conf.c:3513:(_snd_config_evaluate) function snd_func_refer returned error: No such device ALSA lib conf.c:3985:(snd_config_expand) Evaluate error: No such device ALSA lib pcm.c:2205:(snd_pcm_open_noupdate) Unknown PCM surround51 Playback open error: -19,No such device ALSA lib confmisc.c:768:(parse_card) cannot find card 'Nvidia' ALSA lib conf.c:3513:(_snd_config_evaluate) function snd_func_card_driver returned error: No such device ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings ALSA lib conf.c:3513:(_snd_config_evaluate) function snd_func_concat returned error: No such device ALSA lib confmisc.c:1251:(snd_func_refer) error evaluating name ALSA lib conf.c:3513:(_snd_config_evaluate) function snd_func_refer returned error: No such device ALSA lib conf.c:3985:(snd_config_expand) Evaluate error: No such device ALSA lib pcm.c:2205:(snd_pcm_open_noupdate) Unknown PCM surround51 Playback open error: -19,No such device ^C # play something in firefox http://www.youtube.com/watch?v=6H6a-qN9fYk # result: I can hear _now_ left, center, right, right surround, left surround # note: I have the impression that the center is spoken out louder from the right channel # play music in audacious # results: unsuccessful # under preferences the ALSA Output Plugin is selected # play an mp3 file with Totem # result: sounds fine # check /etc/asound.conf cat /etc/asound.conf pcm.out { type route slave.pcm "hw:0,0"; slave.channels 6 ttable { 0.0 1 1.1 1 2.2 1 3.3 1 4.4 1 0.5 0.5 1.5 0.5 } } pcm.!default { type pulse } # check /etc/pulse/default.pa cat /etc/pulse/default.pa #!/usr/bin/pulseaudio -nF # # This file is part of PulseAudio. # # PulseAudio is free software; you can redistribute it and/or modify it # under the terms of the GNU Lesser General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # PulseAudio is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # General Public License for more details. # # You should have received a copy of the GNU Lesser General Public License # along with PulseAudio; if not, write to the Free Software Foundation, # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. # This startup script is used only if PulseAudio is started per-user # (i.e. not in system mode) .nofail ### Load something into the sample cache #load-sample-lazy x11-bell /usr/share/sounds/gtk-events/activate.wav #load-sample-lazy pulse-hotplug /usr/share/sounds/startup3.wav #load-sample-lazy pulse-coldplug /usr/share/sounds/startup3.wav #load-sample-lazy pulse-access /usr/share/sounds/generic.wav load-sample-dir-lazy /usr/share/sounds/ubuntu/stereo .fail ### Load additional modules from GConf settings. This can be configured with the paprefs tool. ### Please keep in mind that the modules configured by paprefs might conflict with manually ### loaded modules. .ifexists module-gconf.so .nofail load-module module-gconf .fail .endif ### Automatically suspend sinks/sources that become idle for too long load-module module-suspend-on-idle ### Automatically restore the volume of streams and devices load-module module-device-restore load-module module-stream-restore ### Load audio drivers statically (it's probably better to not load ### these drivers manually, but instead use module-hal-detect -- ### see below -- for doing this automatically) load-module module-alsa-sink channels=6 device=out #load-module module-alsa-source device=hw:1,0 #load-module module-oss device="/dev/dsp" sink_name=output source_name=input #load-module module-oss-mmap device="/dev/dsp" sink_name=output source_name=input #load-module module-null-sink #load-module module-pipe-sink ### Automatically load driver modules depending on the hardware available .ifexists module-hal-detect.so load-module module-hal-detect tsched=0 .else ### Alternatively use the static hardware detection module (for systems that ### lack HAL support) load-module module-detect .endif ### Automatically load driver modules for Bluetooth hardware #.ifexists module-bluetooth-discover.so #load-module module-bluetooth-discover #.endif ### Load several protocols .ifexists module-esound-protocol-unix.so load-module module-esound-protocol-unix .endif load-module module-native-protocol-unix ### Network access (may be configured with paprefs, so leave this commented ### here if you plan to use paprefs) #load-module module-esound-protocol-tcp #load-module module-native-protocol-tcp #load-module module-zeroconf-publish ### Load the RTP reciever module (also configured via paprefs, see above) #load-module module-rtp-recv ### Load the RTP sender module (also configured via paprefs, see above) #load-module module-null-sink sink_name=rtp format=s16be channels=2 rate=44100 description="RTP Multicast Sink" #load-module module-rtp-send source=rtp.monitor ### Automatically restore the default sink/source when changed by the user during runtime load-module module-default-device-restore ### Automatically move streams to the default sink if the sink they are ### connected to dies, similar for sources load-module module-rescue-streams ### Make sure we always have a sink around, even if it is a null sink. load-module module-always-sink ### If autoexit on idle is enabled we want to make sure we only quit ### when no local session needs us anymore. load-module module-console-kit ### Enable positioned event sounds load-module module-position-event-sounds # X11 modules should not be started from default.pa so that one daemon # can be shared by multiple sessions. ### Load X11 bell module #load-module module-x11-bell sample=bell-windowing-system ### Register ourselves in the X11 session manager #load-module module-x11-xsmp ### Publish connection data in the X11 root window #.ifexists module-x11-publish.so #.nofail #load-module module-x11-publish #.fail #.endif ### Make some devices default #set-default-sink output #set-default-source input