Fedora 14 x86_64
built-in audio ATI HDA-Intel SB in ASUS AM3VM2-HDMI MB
Two sets of speakers, one in back audio port (call it BS
), one in front audio jack (call it FS
No sound from left of BS (BS_L
), and no sound from right of FS (FS_R
have sound, and they are in stereo, so correct sound from the appropriate sides, but not in same pair.
BIOS setting has front panel audio set as AC97, not HD-Audio. I tried both and no difference.
I tested both speakers in other PCs and other speakers on this PC, so no problem with speakers or wires
I suspect some internal audio hardware mixer control needs setting. I tried pavucontrol
, alsamixer -c 0
, but none of them shows any way of controlling the front and back ports separately.
When selecting 'Analog headphone' from pavucontrol
, no sound comes out of either ports. Only 'Analog output' creates any sound.
So the question:
- Is there a way to fix this using software?
- Is my internal audio mixing circuitry broken?
- Jack auto-detect not working (the manual says it can auto-detect what is being connected)?
- Does the kernel not support this?
I don't use this PC often, and I only remember having it working in Fedora 11. Probably worked in Fedora 14 before, but not sure.
Another observation if that helps:
If I disconnect BS
a little while, and reconnect, BS_L
also has sound, although slitghty lower volume than BS_R
. The moment I connect FS
, or after a while, then BS_L
goes out (there is a little very faint cracking as if trying to come out, but sound never materializes). The FS_L
has no such short-term luck in any way.
No solution if I disconnect the internal wires from motherboard to front audio jack either.