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Old 09-08-2007, 01:49 PM   #1
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Cannot configure nVidia Corporation MCP51 High Definition Audio

``lspci -v'' yields (in part):

00:10.1 Class 0403: nVidia Corporation MCP51 High Definition Audio (rev a2)
Subsystem: Hewlett-Packard Company: Unknown device 2a3e
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 7
Memory at 00000000fe024000 (32-bit, non-prefetchable) [size=16K]
Capabilities: [44] Power Management version 2
Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable-
Capabilities: [6c] HyperTransport: MSI Mapping

``alsaconf'' says:
No supported PnP or PCI card found.

My box is an HP Pavilion a1632x (dual cpu 64 bit chip)
My OS is SuSE 10. Thanks in advance for any/all hints.
Regards, Bruce
Old 09-08-2007, 04:53 PM   #2
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Did you try yo use snd_hda_intel?
modprobe snd_hda_intel
and then try to configure sound using alsconf/alsamixer or yast.
Old 09-08-2007, 06:19 PM   #3
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I had no reason to know to try anything.
Anyway, I did the mod probe and did the alsaconf.
Still no joy. "modinfo" on the driver afterwards

filename: /lib/modules/2.6.13-15.16-smp/kernel/sound/pci/hda/snd-hda-intel.ko
description: Intel HDA driver
license: GPL
srcversion: A16486BB637838D2676AABA
alias: pci:v000010B9d00005461sv*sd*bc*sc*i*
alias: pci:v00001039d00007502sv*sd*bc*sc*i*
alias: pci:v00001106d00003288sv*sd*bc*sc*i*
alias: pci:v00001002d0000437Bsv*sd*bc*sc*i*
alias: pci:v00008086d0000269Asv*sd*bc*sc*i*
alias: pci:v00008086d000027D8sv*sd*bc*sc*i*
alias: pci:v00008086d00002668sv*sd*bc*sc*i*
depends: snd-pcm,snd-page-alloc,snd,snd-hda-codec
supported: yes
vermagic: 2.6.13-15.16-smp SMP gcc-4.0
parm: index:Index value for Intel HD audio interface. (array of int)
parm: id:ID string for Intel HD audio interface. (array of charp)
parm: enable:Enable Intel HD audio interface. (array of bool)
parm: model:Use the given board model. (array of charp)
parm: position_fix:Fix DMA pointer (0 = FIFO size, 1 = none, 2 = POSBUF). (array of int)
Old 09-08-2007, 07:28 PM   #4
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It is modprobe not mod probe. The module is snd-hda-intel. This module supports a lot of integrated sound cards including ATI and nVidia, so you may have to force it to one model.

The list can be found in ALSA source code or in the kernel source code. Do a search for "ALSA-Configuration.txt".
Old 09-08-2007, 11:47 PM   #5
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MCP51 will not run under Kernel 2.6.13. I have the same audio in my 64 bit motherboard. It didn't work till I installed Sidux 2007_02 or the new SimplyMepis Beta. Both had kernels later than 2.6.21.
Old 09-09-2007, 01:06 AM   #6
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I did the module probe by typing the "modprobe" command. Thank you. ``Both had kernels later than 2.6.21'' -- Rats. ``The list can be found in ALSA source code'' Double rats. The next several weekends are scheduled. I'll have to resume this much struggle come October. Thanks for your tips! Regards - Bruce
Old 09-11-2007, 09:01 AM   #7
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Hi all. Thank you all for your help. I've now tried several recent distributions, and they all hang on ``starting udev''. I've probed far enough to know that adding the boot option, ``acpi=off'' gets me past the problem. Sure enough, it does. It just leaves my disks invisible; making it hard to re-install. From what I can tell, this problem has existed since May of 2006 and there is still no fix. So, until the udev is either fixed or restored to the working pre-May 2006 version, I'm hosed.


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