[solved] Lost surround 5.1 with kernel version 3.3.1

Question

Hi!  Since i've upgrade to kernel 3.3.1, i lost surround sound, even if pulseaudio says that surround 5.1 is enable.
My modprobe.d dir contains a special file (alsa-base.conf) that contains theses lines:
alias snd-card-0 snd-hda-intel
options snd-hda-intel model=acer-aspire-8930g power_save=0 power_save_controller=N
My laptop is a acer 8940g and it used to work well since kernel 2.6.30.
I use pulseaudio since a long time ago and likes it.
Here's output from aplay -l
aplay -l
**** Liste des Périphériques Matériels PLAYBACK ****
carte 0: Intel [HDA Intel], périphérique 0: ALC889 Analog [ALC889 Analog]
  Sous-périphériques: 1/1
  Sous-périphérique #0: subdevice #0
carte 0: Intel [HDA Intel], périphérique 1: ALC889 Digital [ALC889 Digital]
  Sous-périphériques: 1/1
  Sous-périphérique #0: subdevice #0
carte 1: NVidia [HDA NVidia], périphérique 3: HDMI 0 [HDMI 0]
  Sous-périphériques: 1/1
  Sous-périphérique #0: subdevice #0
carte 1: NVidia [HDA NVidia], périphérique 7: HDMI 0 [HDMI 0]
  Sous-périphériques: 1/1
  Sous-périphérique #0: subdevice #0
carte 1: NVidia [HDA NVidia], périphérique 8: HDMI 0 [HDMI 0]
  Sous-périphériques: 1/1
  Sous-périphérique #0: subdevice #0
carte 1: NVidia [HDA NVidia], périphérique 9: HDMI 0 [HDMI 0]
  Sous-périphériques: 1/1
  Sous-périphérique #0: subdevice #0
Does anyone knows about this problem?  The only solution i had right now is to revert back to kernel 3.2.14.
Thanks!
Last edited by danym (2012-04-12 02:04:43)

Answer 1

I have an 8930g, so pretty close to you.
My surround sound works. I use alsa-driver 1.0.25, rather than the in-kernel ALSA.
So, my kernel config is:
$ zgrep SOUND /proc/config.gz
CONFIG_SOUND=m
# CONFIG_SOUND_OSS_CORE is not set
# CONFIG_SOUND_PRIME is not set
$ zgrep SND /proc/config.gz
# CONFIG_SND is not set
And alsa-driver is compiled with:
./configure --prefix=/usr --with-isapnp=no --with-sequencer=yes --with-oss=no --with-pcm-oss-plugins=no --with-debug=none --with-kernel=/usr/src/linux --with-cards=hda-intel,hrtimer --with-card-options=seq-hrtimer-default,hda-codec-realtek,hda-hwdep,hda-reconfig,hda-patch-loader,hda-enable-realtek-quirks,hda-codec-analog,hda-prealloc-size=2048