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Taula de continguts
Àudio i snd-hda-intel
Perspectiva General
Aquest COM tracta amb els problemes relacionats amb targetes de so que utilitzen el conjunt de xips Intel HDA.
Et trobes amb problemes d'àudio com:
- Cap so?
- Els auriculars funcionen però els altaveus no?
- Els altaveus funcionen però els auriculars no?
- Els altaveus no es silencien quan els auriculars estan connectats?
- No es reconeixen les entrades d'Àudio?
Diagnosticant el problema el
Executa la ordre
lsmod | grep snd
en una finestra de terminal. Si hi ha una referència a snd_hda_intel
en la eixida, aleshores el mòdul de nucli snd-hda-intel
ha sigut carregat així com el controlador per al xip controlador i el xip de codec al bus HD-audio.
Execute la ordre
aplay -l
en una finestra de terminal. Si hi ha més d'un dispositiu d'àudio caldrà que identifiques i definisques el dispositiu que t'agradaria utilitzar. Mira http://docs.slackware.com/howtos:hardware:sound_problems_on_slackware
The fix
The snd-hda-intel kernel
module tries to autodetect and configure your sound hardware, but this is not always successful. Some further configuration may help.
Often the fix is simple. Just create a file in the /etc/modprobe.d/
directory and provide suitable options to the snd-hda-intel
kernel module. The actual file name is not important although it must have a .conf
suffix. You could use snd-hda-intel.conf
. Names used by other distributions to hold this information include sound.conf
and alsa-base.conf
.
A simple way is to execute (as root)
echo "options snd-hda-intel model=auto" > /etc/modprobe.d/snd-hda-intel.conf
It is probably easiest just to reboot at this stage to check if it works right.
If you have multiple sound devices, then you can specify the index values that are to be assigned to each device, where index=0 is the default. For example, if
aplay -l **** List of PLAYBACK Hardware Devices **** card 0: Generic [HD-Audio Generic], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: Generic_1 [HD-Audio Generic], device 0: CX20756 Analog [CX20756 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0
then you could assign card 1 to index=0 with /etc/modprobe.d/snd-hda-intel.conf containing
alias char-major-116 snd alias snd-card-0 snd-hda-intel alias snd-card-1 snd-hda-intel options snd-hda-intel id=Generic_1 index=0 options snd-hda-intel id=Generic index=1
How to find the right options?
Very often the problem has already been solved. Use your favourite internet search engine and search for “snd-hda-intel <Your make> <Your model>”.
If that is unsuccessful then execute
cat /proc/asound/card*/codec* | grep Codec
The output from that command should be something like
Codec: SigmaTel STAC9227
You can then read the documentation in the file /usr/src/linux/Documentation/sound/alsa/HD-Audio-Models.txt
to see a list of possible models that can be used with your codec chip. The default is always model=auto
, but it has been reported that some devices seem to need that option supplied explicitly to be made to work.
If that does not work and you are very keen then take a look at the file /usr/src/linux/Documentation/sound/alsa/HD-Audio.txt
.
The table below shows options that have been reported to work. Suggestions for additions/amendments are very welcome!
Make | Model | Output of '/sbin/lspci | grep Audio' | Option | Slackware Version |
? | ? | 00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 01) | options snd-hda-intel model=auto | 13.37 |
? | ? | 0:1b.0 Audio device: Intel Corporation 6 Series Chipset Family High Definition Audio Controller (rev 05) | options snd-hda-intel model=auto | 13.37 |
Asus | Eee PC 1001px | ? | options snd-hda-intel model=auto | 13.1 with ALSA 1.0.24 |
Asus | K50IJ | 00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03) | options snd-hda-intel model=auto, enable_msi=1 | 14.0 |
Dell | Dimension E520 | 00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 02) | options snd-hda-intel model=3stack | 13.37 |
Dell | Inspiron 1420 | ? | options snd-hda-intel model=dell | 13.37 |
Dell | Inspiron 1545 | ? | options snd-hda-intel model=dell-m4-1 | 13.1 |
Dell | Inspiron 15R i7 | ? | options snd-hda-intel model=dell-s14 | 13.1 |
Gateway | 4022 | 00:10.1 Audio device: nVidia Corporation MCP51 High Definition Audio (rev a2) | options snd-hda-intel model=3stack | 13.1 |
Gateway | GT5468 | ? | options snd-hda-intel model=haier-w66 | ? |
Gigabyte | GA-M68MT-S2 Motherboard | 00:05.0 Audio device: nVidia Corporation MCP61 High Definition Audio (rev a2) | options snd-hda-intel model=auto | 14.0 |
HP | Pavilion dv6-2140ca | 01:00.1 Audio device: ATI Technologies Inc RV710/730 | options snd-hda-intel model=hp-dv5, enable_msi=1 | 13.37 |
Intel | DG965SS motherboard | 00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 02) | options snd-hda-intel model=auto | 14.0 |
Lenovo | X120e | 00:01.1 Audio device: ATI Technologies Inc Device 1314 | options snd-hda-intel index=1 | 13.37 (with 2.6.38.4 kernel from /testing) |
Toshiba | Satellite L30-10X | 00:14.2 Audio device: ATI Technologies Inc IXP SB4x0 High Definition Audio Controller (rev 01) | options snd-hda-intel model=hp, enable_msi=1 | 12.0.0, 12.1.0, 12.2.0 (audio input not tested) |
.
Sources
- Originally written by David Allen for the SlackDocs Wiki Project
- Contributions by Harishankar
References
/usr/src/linux/Documentation/sound/alsa/HD-Audio.txt
/usr/src/linux/Documentation/sound/alsa/HD-Audio-Models.txt