Ubuntu
alsa-driver package

audio problems Asus eeeTOP ET2203T with Realtek chip

Asked by Heiko Kuehn

Hello
I got a Asus ET2203T and installed Ubuntu 10.04. Everything works fine including touchpanel, but the audio doesnt't work.
I have only very low volume on audio out, even I adjust to the maximum volume level. On the Microfone is no input recognized at all. The sound is working perfect with Windows7, so I can exclude hardware problems.

following outputs:

aplay -l

**** Liste der Hardware-Geräte (PLAYBACK) ****
Karte 0: Intel [HDA Intel], Gerät 0: ALC887 Analog [ALC887 Analog]
  Sub-Geräte: 1/1
  Sub-Gerät #0: subdevice #0
Karte 0: Intel [HDA Intel], Gerät 1: ALC887 Digital [ALC887 Digital]
  Sub-Geräte: 1/1
  Sub-Gerät #0: subdevice #0

lspci -v

00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03)
 Subsystem: ASUSTeK Computer Inc. Device 83da
 Flags: bus master, fast devsel, latency 0, IRQ 22
 Memory at fbcf8000 (64-bit, non-prefetchable) [size=16K]
 Capabilities: [50] Power Management version 2
 Capabilities: [60] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable-
 Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
 Capabilities: [100] Virtual Channel <?>
 Capabilities: [130] Root Complex Link <?>
 Kernel driver in use: HDA Intel
 Kernel modules: snd-hda-intel

When I look to http://www.realtek.com.tw/products an ALC887 does'n exist.

Can somebody help me to get the sound working with Ubuntu?

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Mark Rijckenberg (markrijckenberg) said : 		#1

I believe your soundcard is experiencing the following bug, for which there is no solution (yet):

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/595094

Revision history for this message
Mark Rijckenberg (markrijckenberg) said : 		#2

In the meantime, there seems to be a workaround solution now.

Please try it.

It is described here:

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/595094/comments/12

in the following bugreport (same one):

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/595094

Revision history for this message
Mark Rijckenberg (markrijckenberg) said : 		#3

_Workaround procedure :_

1) wget http://www.kernel.org/pub/linux/kernel/people/tiwai/misc/hda-verb/hda-verb-0.3.tar.gz
2) tar xzf hda-verb-0.3.tar.gz
3) cd hda-verb-0.3
4) make
5) sudo mv hda-verb /usr/local/bin/
6) Put this line in /etc/rc.local before exit 0 :

/usr/local/bin/hda-verb /dev/snd/hwC0D0 0x15 SET_EAPD_BTLENABLE 2

7) Run :

sudo /usr/local/bin/hda-verb /dev/snd/hwC0D0 0x15 SET_EAPD_BTLENABLE 2

(or reboot)

Revision history for this message
andrea manconi (andymnc) said : 		#4

with this work around, when shutting down the system, ubuntu kill every daemon and services but this one.
it is audible a huge crackle befor the et2203t turn off (this doesn't happen with Windows)

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