hello everybody
I have bought a laptop 2 months ago with pre installed windows7 and installed Ubuntu 10.04 64bit but still didnt get sound from the speakers. With headphones everything is OK . I have unmuted everything and searched forums but nothing so far. In windows I get speaker sound so it is not hardware problem. In alsamixer it appears I have 2 soundcards, one HDA -intel (chip Realtek ALC272) and a second one HDA nvidia ( a virtual one propably from my nvidia VGA ) that lacks controls . With lspci -v , it appears both use the same driver : Kernel driver in use: HDA IKernel modules: snd-hda-intel . Tried to disable the first one from bios but it didnt help I also tried sound adjustment in preferences -> sound and gnome-alsamixer, nothing
From gnome alsamixer, when I mute speakers, the headphones also get mute so may be the system doesnt recognize speakers and headphones separately ?
May be it has to do with config files but my linux knowledge is low , so please help!
__________________
Ubuntu 10.04
In love with linux!

You might need to blacklist one of the soundcards. Can you post the output of lspci -v and lsmod. These listings are likely to be quite long, it might be better if you use Pastebin then post the link(s) to this thread.

Thank you for your reply
Am not sure how to use pastebin so Ill try to shorten the list of lspci -v
lspci -v

00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 05)
Flags: bus master, fast devsel, latency 0, IRQ 22
Memory at d9100000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: HDA Intel
Kernel modules: snd-hda-intel

01:00.1 Audio device: nVidia Corporation High Definition Audio Controller (rev a1)
Subsystem: QUANTA Computer Inc Device 0831
Flags: bus master, fast devsel, latency 0, IRQ 17
Memory at d3000000 (32-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: HDA Intel
Kernel modules: snd-hda-inteland

lsmod
Module Size Used by
arc4 1473 2
rfcomm 40393 4
sco 9649 2
binfmt_misc 7960 1
ppdev 6375 0
bridge 53184 0
stp 2171 1 bridge
bnep 11884 2
l2cap 34806 16 rfcomm,bnep
snd_hda_codec_realtek 279040 1
snd_hda_intel 25773 4
snd_hda_codec 85759 2 snd_hda_codec_realtek,snd_hda_intel
snd_hwdep 6924 1 snd_hda_codec
snd_pcm_oss 41394 0
snd_mixer_oss 16299 1 snd_pcm_oss
snd_pcm 87946 4 snd_hda_intel,snd_hda_codec,snd_pcm_oss
snd_seq_dummy 1782 0
snd_seq_oss 31219 0
snd_seq_midi 5829 0
snd_rawmidi 23420 1 snd_seq_midi
joydev 11072 0
snd_seq_midi_event 7267 2 snd_seq_oss,snd_seq_midi
snd_seq 57481 6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
snd_timer 23649 2 snd_pcm,snd_seq
snd_seq_device 6888 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq
fbcon 39270 71
nvidia 11086868 42
usbhid 41084 0
tileblit 2487 1 fbcon
font 8053 1 fbcon
bitblit 5811 1 fbcon
softcursor 1565 1 bitblit
psmouse 64576 0
snd 71187 19 snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_se q_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
btusb 13001 2
bluetooth 58685 9 rfcomm,sco,bnep,l2cap,btusb
uvcvideo 62595 0
videodev 40518 1 uvcvideo
v4l1_compat 15495 2 uvcvideo,videodev
v4l2_compat_ioctl32 11956 1 videodev
hid 83472 1 usbhid
serio_raw 4918 0
r8192se_pci 489163 0
vga16fb 12757 1
vgastate 9857 1 vga16fb
soundcore 8052 1 snd
snd_page_alloc 8500 2 snd_hda_intel,snd_pcm
intel_agp 29095 0
atl1c 32975 0
video 20623 0
output 2503 1 video
lp 9336 0
parport 37160 2 ppdev,lp
ahci 37870 2

Well at last ! I hear sound now after updating my alsa to 1.0.23 ( I got 1.0.21 when updating -upgrading from the terminal) . I followed the instruction here : http://monespaceperso.org/blog-en/20...id-lynx-10-04/