Re: [Alsa-user] Acer 4820TG hda-intel wrong BIOS-autoprobing

[Tommaso F. D. <vol...@gm...>]

I noticed that error messages

hda-intel: spurious response ....
hda-intel: azx_get_response timeout, switching to polling mode:
...
hda_intel: azx_get_response timeout, switching to single_cmd mode

are present in dmesg only when Intel integrated graphic card is used. The
system has two GPUs (Intel + ATI dedicated).
If ATI card is selected at boot (using vga_switcheroo) no such messages are
displayed.

Is there any logical explanation to this behavior?
Thanks and regards,

Tommaso

2011/7/27 Tommaso Falchi Delitala <vol...@gm...>

> Hi everybody,
>
> I think there is something wrong with the intel-hda model autoprobing
> on my Acer TimelineX 4820TG.
>
> The chip is recognized as:
> "hda_codec: ALC271X: BIOS auto-probing",
> but Pcwizard under Windows 7 reports it as Realtek ALC-269. Other info
> I found on the Internet seem to confirm 269 is the right codec.
>
> Can anybody confirm the correct model onboard the Acer 4820TG?
>
> Dmesg is populated with:
> hda-intel: spurious response 0x0:0x0, last cmd=0x270d80
> [...]
> hda-intel: azx_get_response timeout, switching to polling mode: last
> cmd=0x00270e02
> [...]
> hda_intel: azx_get_response timeout, switching to single_cmd mode:
> last cmd=0x00170503
> azx_single_send_cmd: 177 callbacks suppressed
>
> I guess these erros result from wrong model autoprobing.
> Audio works anyway, but occasionally lags and shows major problems
> after enabling powersave features.
>
> I tried to force audio model with:
> options snd-hda-intel model=laptop-amic probe_mask=1, or
> options snd-hda-intel model=acer
> but it doesn't work.
>
> Is there a real problem in the codec model auto-probing?
> Should I file a kernel bug or am I missing something in the configuration?.
>
> Thank you for your help,
> Best Regards,
>
> Tommaso
>
> -----Other useful info:
> OS: Arch Linux, kernel 3.0.0 (same with 2.6.39)
>
> Driver version:     1.0.24
> Library version:    1.0.24.1
>
> Soundcards recognised by ALSA
>
> 0 [Intel]: HDA-Intel - HDA Intel
>   HDA Intel at 0xdc500000 irq 44
>  1 [Generic]: HDA-Intel - HD-Audio Generic
>   HD-Audio Generic at 0xdc420000 irq 45
>
> PCI Soundcards installed in the system
>
> 00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset
> High Definition Audio (rev 05)
> 01:00.1 Audio device: ATI Technologies Inc Manhattan HDMI Audio
> [Mobility Radeon HD 5000 Series] (rev ff)
>
> 00:1b.0 0403: 8086:3b56 (rev 05)
>        Subsystem: 1025:0359
> --
> 01:00.1 0403: 1002:aa68 (rev ff) (prog-if ff)
>        !!! Unknown header type 7f
>