Re: [arch-general] Multiple sound cards

20 Apr 2008

      I thought I'd check the changelog for 2.6.24 on www.kernel.org
(http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.24) and
found this:

--------------8<----------------------------------------------------------------------------------------------------------------
commit 346ca04d050ac48ceb8e4a6b1c76c2d7fd5d1a6a
Author: Johannes Goecke 
Date:   Mon Sep 10 10:46:52 2007 +0200

    PCI: re-enable onboard sound on "MSI K8T Neo2-FIR"

    On the "MSI K8T Neo2-FIR" board the BIOS disables the onboard
    soundcard, if a second PCI soundcard is present.

    This patch sets the korrect register bit to enable the onboard sound.

    Removed old code in /drivers/pci/quirks.c that only checks for the
    PCI-ID and fires on any Board with VIA 8237.

    New code in /arch/i386/pci/fixup.c checks the DMI-tables and only runs
    on the specific board.
--------------8<----------------------------------------------------------------------------------------------------------------

My board is an MSI K8TM ILSR so this sounds a promising thing to look
at... will post back if I have any luck, in case anybody else is
interested.

Steve

On 20/04/2008, Stephen Wilkinson  wrote:
...
Thanks Karolina,
I'd noticed that too, that the kernel (from 2.6.17 til 2.6.23)
 detected the on-board sound card even when it was set to "disabled" in
 the BIOS. I double checked the BIOS setting, and it is definitely
 enabled.
Before kernel 2.6.17 I couldn't get the two cards working
 simultaneously... hmm, I wonder if a "feature" (read bug!) that made
 my setup work has been fixed!
Can the on-board be disabled by the presence of another sound card
 (over-riding the BIOS setting)?
Steve
On 20/04/2008, Karolina Lindqvist  wrote:
...
söndagen den 20 april 2008 skrev Stephen Wilkinson:
...
Does anyone have any suggestions as to why this may have stopped
working in moving from 2.6.23 to 2.6.24? Is it no longer possible to
run two sound cards together?
I got the same problem with my (only) built-in VIA sound chip. From kernel
 2.6.24 and onwards, the chip has to be enabled in the bios.  I had it
 disabled before.
 Check your bios settings, and enable the card if it is disabled.
Before linux ignored bios settings, but it look likes it does not do that
 anymore.
Karolina