On 4/3/2010 12:02 AM, Axel Thimm wrote:
On Fri, Apr 02, 2010 at 03:55:39PM -0700, Kirk Bocek wrote:
I tried installing the alsa-kmdl 1.0.22 package for CentOS 5, kernel
2.6.18-164.15.1.el5 x86_64. But attempting to load any sound modules
yields an "unknown symbol" error. Downgrading to the 1.0.20 kmdl
package fixes the problem and allows sound modules to load
correctly.

Does anyone know what's going on?

Could you post the full error message (e.g. which symbol is unknown)?

After installing the 1.0.22 kmdls and rebooting, no sound modules are loaded at all. So:

$modprobe -v snd-hda-intel
insmod /lib/modules/2.6.18-164.15.1.el5/updates/sound/acore/snd.ko
WARNING: Error inserting snd (/lib/modules/2.6.18-164.15.1.el5/updates/sound/acore/snd.ko): Unknown symbol in module, or unknown parameter (see dmesg) WARNING: Error inserting snd_timer (/lib/modules/2.6.18-164.15.1.el5/updates/sound/acore/snd-timer.ko): Unknown symbol in module, or unknown parameter (see dmesg) WARNING: Error inserting snd_pcm (/lib/modules/2.6.18-164.15.1.el5/updates/sound/acore/snd-pcm.ko): Unknown symbol in module, or unknown parameter (see dmesg) WARNING: Error inserting snd_hwdep (/lib/modules/2.6.18-164.15.1.el5/updates/sound/acore/snd-hwdep.ko): Unknown symbol in module, or unknown parameter (see dmesg) WARNING: Error inserting snd_hda_codec (/lib/modules/2.6.18-164.15.1.el5/updates/sound/pci/hda/snd-hda-codec.ko): Unknown symbol in module, or unknown parameter (see dmesg) FATAL: Error inserting snd_hda_intel (/lib/modules/2.6.18-164.15.1.el5/updates/sound/pci/hda/snd-hda-intel.ko): Unknown symbol in module, or unknown parameter (see dmesg)

And dmesg:

$dmesg
snd: Unknown symbol put_pid

Then if I uninstall the 1.0.22 rpm and install the 1.0.20 package, without rebooting I can install and use snd-hda-intel without issue.

Thanks a lot Axel. You provide a really important and helpful resource.

Kirk Bocek

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