Date: Wed, 3 Jul 2002 09:45:36 -0700 (PDT) From: Jesse Riddle <jxriddle@hotmail.com> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/40155: No sound on Presario 700 laptop's ac97 codec. (VIA82C686) Message-ID: <200207031645.g63Gjabl062797@www.freebsd.org>
next in thread | raw e-mail | index | archive | help
>Number: 40155
>Category: kern
>Synopsis: No sound on Presario 700 laptop's ac97 codec. (VIA82C686)
>Confidential: no
>Severity: non-critical
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Jul 03 09:50:03 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator: Jesse Riddle
>Release: FreeBSD 4.6-RELEASE
>Organization:
UPS
>Environment:
FreeBSD caleb.metropolis 4.6-RELEASE FreeBSD 4.6-RELEASE #11: Wed Jul 3 10:27:10 EST 2002 jesse@caleb.metropolis:/usr/obj/usr/src/sys/CALEB i386
>Description:
I am using a Compaq Presario 700US laptop that sports the VIA82C686 driver-supported ac97 codec. All sound hardware appears to be configured correctly. 'cat /dev/sndstat' returns "pcm0: <VIA VT82C686A> at io 0x1000 irq5 (1p/1r/0v channels duplex)". However, when I test audio output by playing an mp3 file with mpg123 -vv, there is no audible output. It looks like the mp3 file is being played just fine, but it can't be heard at all. Mixer settings are default, everything is 75:75. The only exceptions are mic, rec, phin, and phout; which are set to 0:0.
I will be open to receive email. I can help a developer test possible workarounds / patches. However, the Linux patch was fairly simple and straightforward. I am just not equipped with the know-how to do this myself. Believe me, I have tried, and I'm still going to try, at getting this to work.
>How-To-Repeat:
Set up sound devices with "device pcm" in the kernel with FreeBSD 4.6-RELEASE while using a Compaq Presario 700-series laptop. 'cat /dev/sndstat/' should work correctly. /dev/dsp can be opened, but there is no audio produced.
>Fix:
There is a patch written by Santiago Nullo that fixes this problem in the linux-2.4.18 kernel. The "JACK_SENSE" register (0x72) needs to be initalized to 0x0010. I think the fix also works on other Compaq Presario 700-series laptops, such as the 715xx.
>Release-Note:
>Audit-Trail:
>Unformatted:
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-bugs" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200207031645.g63Gjabl062797>