[ALSA - driver 0001011]: ALSA doesnt sense connected headphones

bugtrack
2005-03-24T18:43:16Z

A NOTE has been added to this issue.
======================================================================
<https://bugtrack.alsa-project.org/alsa-bug/view.php?id=1011>
======================================================================
Reported By: rmrfchik
Assigned To:
======================================================================
Project: ALSA - driver
Issue ID: 1011
Category: PCI - intel8x0
Reproducibility: always
Severity: tweak
Priority: normal
Status: new
Distribution: Debian
Kernel Version: 2.6.10-1
======================================================================
Date Submitted: 03-24-2005 17:13 CET
Last Modified: 03-24-2005 19:43 CET
======================================================================
Summary: ALSA doesnt sense connected headphones
Description:
I have: Intel Corp. 82801EB/ER (ICH5/ICH5R) AC'97 Audio Controller (rev 02)
with Realek ALC850 chipset (motherboard gigabyte 8ig1000G Pro).
When connecting headphones to line out (or other any output), I hear line
output (not apmlified).
I think, output to headphone must be amplified.
======================================================================

----------------------------------------------------------------------
tiwai - 03-24-05 19:43
----------------------------------------------------------------------
Attach the content of /proc/asound/card0/codec97#0/* files.

Check the register 0x7a in /proc/asound/card0/codec97#0/ac97#0-0+regs.
How are the bits 6 and 7? According to the datasheet, bit 7 corresponds
to the Front-out amplifier control.

When the driver is compiled with CONFIG_SND_DEBUG=y, you can edit the
register value via this proc file, like

# echo 7a 2092 > /proc/asound/card0/codec97#0/ac97#0-0+regs

Issue History
Date Modified Username Field Change
======================================================================
03-24-05 17:13 rmrfchik New Issue
03-24-05 17:13 rmrfchik Distribution => Debian
03-24-05 17:13 rmrfchik Kernel Version => 2.6.10-1
03-24-05 19:43 tiwai Note Added: 0004195
======================================================================

-------------------------------------------------------
SF email is sponsored by - The IT Product Guide
Read honest & candid reviews on hundreds of IT Products from real users.
Discover which products truly live up to the hype. Start reading now.