[alsa-devel] Regarding Sound on Acer Aspire 6935G

Takashi Iwai tiwai at suse.de
Sun May 17 19:35:05 CEST 2009

At Sat, 16 May 2009 11:51:36 +0800,
Karthik Ramgopal wrote:
> Hi,
>        Even after enabling DEBUG using --with-debug option with configure when
> compiling the alsa-driver snapshot leaves no more error messages in the dmesg
> logs. The only message relating to HDA is:
> [   41.104817] hda-intel: IRQ timing workaround is activated for card #0.
> Suggest a bigger bdl_pos_adj.
> I just got the line-out output to work by toggling the surround volume. I
> still think it's a mapping problem. The headphone switch is turning the
> subwoofer on and off, and the surround volume is controlling the line-out
> volume.

OK, this implies that the BIOS setup is broken.
Did you try model=acer-aspire-4930g, BTW?


> None of the line-in devices function and all of the amp-ins 0x0b to
> 0x0f are muted. Cannot find any verb to unmute them. hda-verb with
> SET_EAPD_BTLENABLE 2 at 0x15 is still needed at startup to fire up the amps.
> Please help.
> Regards,
> Karthik

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