Linux DAW på svenska

Att få igång HDA-kretsen i bland annat en del laptops kan vara lite knivigt. Probemet är att det finns många HDA-kretsar och ljud-drivrutinen (modulen) som stödjer dem ibland behöver få parametrar för att fungera på rätt sätt. Hur gör man då detta?

Svaret finns att få i ALSA-dokumentationen. Men först måste vi kolla vilken krets som datorn har. Detta gör enklast i terminalen genom kommandot

aplay -l
**** Lista över PLAYBACK hårdvaruenheter ****
kort 0: SB [HDA ATI SB], enhet 0: ALC861VD Analog [ALC861VD Analog]
  Underordnade enheter: 1/1
  Underordnad enhet #0: subdevice #0

I detta fallet är alltså kretsen av modellen ALC861VD.

För att detta skall fungera måste filen /etc/modprobe.d/alsa-base modifieras. Detta görs genom kommandot

sudo nano /etc/modprobe.d/alsa-base

För att få reda på vad som skall skrivas in, kollar man i listan nedan och får fram att det som ska in i filen /etc/modprobe.d/alsa-base är

options snd-hda-intel model=3stack

för att få utgångarna rätt. Kolla gärna igenom filen och se till att inte options snd-hda-intel återfinns på någon annan rad så att det skapas en konflikt.

Har man en S/PDIF-utgång på kortet kan man istället skriva

options snd-hda-intel model=3stack-dig

Här kommer listan med de olika modellerna av chip som stöds av modulen snd-hda-intel. Först listas chipnamnet, sedan de olika modellbeteckningarna som måste in efter model= i alsa-base-filen. Ibland kan det behövas viss laborering och testande för att få det helt rätt så ha tålamod.

Ursäkta den fula layouten, blogger suger. :(

  Module snd-hda-intel
  --------------------

    Module for Intel HD Audio (ICH6, ICH6M, ESB2, ICH7, ICH8),
  ATI SB450, SB600, RS600,
  VIA VT8251/VT8237A,
  SIS966, ULI M5461

    model - force the model name
    position_fix - Fix DMA pointer (0 = auto, 1 = none, 2 = POSBUF, 3 = FIFO size)
    single_cmd  - Use single immediate commands to communicate with
  codecs (for debugging only)
    enable_msi - Enable Message Signaled Interrupt (MSI) (default = off)

    This module supports one card and autoprobe.

    Each codec may have a model table for different configurations.
    If your machine isn't listed there, the default (usually minimal)
    configuration is set up.  You can pass "model=" option to
    specify a certain model in such a case.  There are different
    models depending on the codec chip.

   Model name Description
   ----------    -----------
 ALC880
   3stack 3-jack in back and a headphone out
   3stack-digout 3-jack in back, a HP out and a SPDIF out
   5stack 5-jack in back, 2-jack in front
   5stack-digout 5-jack in back, 2-jack in front, a SPDIF out
   6stack 6-jack in back, 2-jack in front
   6stack-digout 6-jack with a SPDIF out
   w810  3-jack
   z71v  3-jack (HP shared SPDIF)
   asus  3-jack (ASUS Mobo)
   asus-w1v ASUS W1V
   asus-dig ASUS with SPDIF out
   asus-dig2 ASUS with SPDIF out (using GPIO2)
   uniwill 3-jack
   fujitsu Fujitsu Laptops (Pi1536)
   F1734  2-jack
   lg  LG laptop (m1 express dual)
   lg-lw  LG LW20/LW25 laptop
   tcl  TCL S700
   clevo  Clevo laptops (m520G, m665n)
   test  for testing/debugging purpose, almost all controls can be
   adjusted.  Appearing only when compiled with
   $CONFIG_SND_DEBUG=y
   auto  auto-config reading BIOS (default)

 ALC260
   hp  HP machines
   hp-3013 HP machines (3013-variant)
   fujitsu Fujitsu S7020
   acer  Acer TravelMate
   basic  fixed pin assignment (old default model)
   auto  auto-config reading BIOS (default)

 ALC262
   fujitsu Fujitsu Laptop
   hp-bpc HP xw4400/6400/8400/9400 laptops
   hp-bpc-d7000 HP BPC D7000
   benq  Benq ED8
   hippo  Hippo (ATI) with jack detection, Sony UX-90s
   hippo_1 Hippo (Benq) with jack detection
   basic  fixed pin assignment w/o SPDIF
   auto  auto-config reading BIOS (default)

 ALC882/885
   3stack-dig 3-jack with SPDIF I/O
   6stack-dig 6-jack digital with SPDIF I/O
   arima  Arima W820Di1
   macpro MacPro support
   auto  auto-config reading BIOS (default)

 ALC883/888
   3stack-dig 3-jack with SPDIF I/O
   6stack-dig 6-jack digital with SPDIF I/O
   3stack-6ch    3-jack 6-channel
   3stack-6ch-dig 3-jack 6-channel with SPDIF I/O
   6stack-dig-demo  6-jack digital for Intel demo board
   acer  Acer laptops (Travelmate 3012WTMi, Aspire 5600, etc)
   medion Medion Laptops
   targa-dig Targa/MSI
   targa-2ch-dig Targs/MSI with 2-channel
   laptop-eapd   3-jack with SPDIF I/O and EAPD (Clevo M540JE, M550JE)
   auto  auto-config reading BIOS (default)

 ALC861/660
   3stack 3-jack
   3stack-dig 3-jack with SPDIF I/O
   6stack-dig 6-jack with SPDIF I/O
   3stack-660 3-jack (for ALC660)
   uniwill-m31 Uniwill M31 laptop
   toshiba Toshiba laptop support
   asus  Asus laptop support
   asus-laptop ASUS F2/F3 laptops
   auto  auto-config reading BIOS (default)

 ALC861VD/660VD
   3stack 3-jack
   3stack-dig 3-jack with SPDIF OUT
   6stack-dig 6-jack with SPDIF OUT
   3stack-660 3-jack (for ALC660VD)
   auto  auto-config reading BIOS (default)

 CMI9880
   minimal 3-jack in back
   min_fp 3-jack in back, 2-jack in front
   full  6-jack in back, 2-jack in front
   full_dig 6-jack in back, 2-jack in front, SPDIF I/O
   allout 5-jack in back, 2-jack in front, SPDIF out
   auto  auto-config reading BIOS (default)

 AD1981
   basic  3-jack (default)
   hp  HP nx6320
   thinkpad Lenovo Thinkpad T60/X60/Z60

 AD1986A
   6stack 6-jack, separate surrounds (default)
   3stack 3-stack, shared surrounds
   laptop 2-channel only (FSC V2060, Samsung M50)
   laptop-eapd 2-channel with EAPD (Samsung R65, ASUS A6J)
   ultra  2-channel with EAPD (Samsung Ultra tablet PC)

 AD1988
   6stack 6-jack
   6stack-dig ditto with SPDIF
   3stack 3-jack
   3stack-dig ditto with SPDIF
   laptop 3-jack with hp-jack automute
   laptop-dig ditto with SPDIF
   auto  auto-config reading BIOS (default)
 
 Conexant 5045
   laptop Laptop config 
   test  for testing/debugging purpose, almost all controls
   can be adjusted.  Appearing only when compiled with
   $CONFIG_SND_DEBUG=y

 Conexant 5047
   laptop Basic Laptop config 
   laptop-hp Laptop config for some HP models (subdevice 30A5)
   laptop-eapd Laptop config with EAPD support
   test  for testing/debugging purpose, almost all controls
   can be adjusted.  Appearing only when compiled with
   $CONFIG_SND_DEBUG=y

 STAC9200/9205/9254
   ref  Reference board

 STAC9220/9221
   ref  Reference board
   3stack D945 3stack
   5stack D945 5stack + SPDIF
   macmini Intel Mac Mini
   macbook Intel Mac Book
   macbook-pro Intel Mac Book Pro

 STAC9202/9250/9251
   ref  Reference board, base config
   m2-2  Some Gateway MX series laptops
   m6  Some Gateway NX series laptops

 STAC9227/9228/9229/927x
   ref  Reference board
   3stack D965 3stack
   5stack D965 5stack + SPDIF

 STAC9872
   vaio  Setup for VAIO FE550G/SZ110
   vaio-ar Setup for VAIO AR

    If the default configuration doesn't work and one of the above
    matches with your device, report it together with the PCI
    subsystem ID (output of "lspci -nv") to ALSA BTS or alsa-devel
    ML (see the section "Links and Addresses").

    Note 2: If you get click noises on output, try the module option
     position_fix=1 or 2.  position_fix=1 will use the SD_LPIB
     register value without FIFO size correction as the current
     DMA pointer.  position_fix=2 will make the driver to use
     the position buffer instead of reading SD_LPIB register.
     (Usually SD_LPLIB register is more accurate than the
     position buffer.)

    NB: If you get many "azx_get_response timeout" messages at
    loading, it's likely a problem of interrupts (e.g. ACPI irq
    routing).  Try to boot with options like "pci=noacpi".  Also, you
    can try "single_cmd=1" module option.  This will switch the
    communication method between HDA controller and codecs to the
    single immediate commands instead of CORB/RIRB.  Basically, the
    single command mode is provided only for BIOS, and you won't get
    unsolicited events, too.  But, at least, this works independently
    from the irq.  Remember this is a last resort, and should be
    avoided as much as possible...
    
    The power-management is supported.

Hoppas att detta hjälper några.