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Sound not working

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http://www.linuxforums.org – Hi folks, Fedora 12 32-bit Mobo - Asus M4A78T-E (on-board sound card) Gnome desktop No sound after login. No sound on playing Youtube This is a completely new PC, just finishing installation. $ cat /proc/asound/cards Code: 0 [SB            ]: HDA-Intel - HDA ATI SB                       HDA ATI SB at 0xfbbf4000 irq 16  1 [HDMI          ]: HDA-Intel - HDA ATI HDMI                       HDA ATI HDMI at 0xfbdfc000 irq 19 $ lsmod | grep snd Code: snd_hda_codec_atihdmi    3176  1 snd_hda_codec_via      24536  1 snd_hda_intel          24204  5 snd_hda_codec          59436  3 snd_hda_codec_atihdmi,snd_hda_codec_via,snd_hda_intel snd_hwdep              6732  1 snd_hda_codec snd_pcm                63236  3 snd_hda_intel,snd_hda_codec snd_timer              17760  1 snd_pcm snd                    50292  14 snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_timer soundcore              5484  1 snd snd_page_alloc          7784  2 snd_hda_intel,snd_pcm $ alsamixer displaying only one channel - master, sound level can't be adjusted, 100<>100 System -> Sound -> Sound Preferences Output [check] Internal Audio Stereo Please advise how to fix the problem. TIA B.R. satimis (HowTos)