FS#13076 - "snd-hda-intel" sound driver not using all of laptop speakers

Attached to Project: Arch Linux
Opened by Jordan Roy (daedhel) - Sunday, 01 February 2009, 03:24 GMT
Last edited by Andrea Scarpino (BaSh) - Tuesday, 14 April 2009, 21:52 GMT
Task Type Support Request
Category Upstream Bugs
Status Closed
Assigned To No-one
Architecture i686
Severity Low
Priority Normal
Reported Version None
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description:

Hardware:

Laptop Acer Aspire 7720 model:IKC70

2.6.28-ARCH #1 SMP PREEMPT i686 Intel(R) Core(TM)2 Duo CPU T5550 @ 1.83GHz GenuineIntel GNU/Linux


lspci says the soud card is:

00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03)


The driver is autodetected at boot, and the module : snd-hda-intel is selected for the device. Ths sound is "working" automatically.

Problem: The Acer Aspire 7720 has a sound system with various speakers. Some are on top of the laptop (high frequencies) some are under (mid and bass frequencies i guess). Under Linux, with Alsa, and the driver/modules listed above, only the top speakers play. With makes a very poor quality sound.

But under windows, with the manufacturer drivers, the bottom speakers are working, with make a much richer sound.

My guess is that this problem happens on many laptops with "Hd" sound system under linux.


Additional info:
* package version(s)
* config and/or log files etc.

alsa-lib 1.0.18-1
alsa-utils 1.0.18-1

kernel: 2.6.28-ARCH i686

Note:

Please note, this is my first bug report. I just hope it helps.
This task depends upon

Closed by  Andrea Scarpino (BaSh)
Tuesday, 14 April 2009, 21:52 GMT
Reason for closing:  Upstream
Comment by Glenn Matthys (RedShift) - Sunday, 01 February 2009, 08:07 GMT
  • Field changed: Task Type (Bug Report → Support Request)
  • Field changed: Category (Kernel → Upstream Bugs)
Did you use the usual steps to try and resolve your problem? Applying the model parameter to snd-hda-intel? Setting all volumes to maximum? etc...
Comment by Glenn Matthys (RedShift) - Sunday, 01 February 2009, 08:08 GMT
And make sure everything is unmuted in alsamixer?
Comment by Jordan Roy (daedhel) - Sunday, 01 February 2009, 13:18 GMT
Thanks for the corrections to my bug report. (Upstream, and feature request).

Here are additionnal informations:

bash-3.2# cat /proc/asound/card0/codec#* | grep Codec
Codec: Realtek ALC268
Codec: Conexant ID 2c06

as for your recommentations:

I already had added:

options snd-hda-intel model=acer

to /etc/modprobe.conf

and checked all the channels in alsa-mixer.

References:
http://bbs.archlinux.org/viewtopic.php?id=38892
https://help.ubuntu.com/community/HdaIntelSoundHowto

The problem is still there.

Thanks,

Jordan
Comment by Matthew Gyurgyik (pyther) - Saturday, 21 March 2009, 14:25 GMT
Has a newer kernel fixed this issue?
Comment by Jordan Roy (daedhel) - Saturday, 21 March 2009, 16:10 GMT
Right now I am using Sidux, with kernel version 2.6.28-7, and the problem hasn't changed. I want to make a bug report to the kernel team, but I haven't had time to check the procedure.
Comment by Matthew Gyurgyik (pyther) - Saturday, 21 March 2009, 17:01 GMT
I just submitted a kernel bug myself a few weeks ago. Just create an account and create the bug report.
http://bugzilla.kernel.org/
Comment by Jordan Roy (daedhel) - Saturday, 21 March 2009, 18:04 GMT
Right now I am using Sidux, with kernel version 2.6.28-7, and the problem hasn't changed. I want to make a bug report to the kernel team, but I haven't had time to check the procedure.

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