The graphical installer said that it was already installed. I clicked Reinstall Package and it didn't seem to help. (I'm not an expert on .deb installs, so just going by instruction here.)

After rebooting, I get this from the command line:


john@john-laptop:~$ modinfo snd-hda-codec
filename:       /lib/modules/2.6.32-24-generic/updates/alsa/snd-hda-codec.ko
license:        GPL
description:    HDA codec core
srcversion:     6E5392338A57455153B24E6
depends:        snd-pcm,snd,snd-hwdep
vermagic:       2.6.32-24-generic SMP mod_unload modversions 
john@john-laptop:~$ 


and


john@john-laptop:~/Downloads$ sudo dpkg -i alsa-intel-hda-update-diwic-m6500-dkms_1.0.23_all.deb
[sudo] password for john: 
(Reading database ... 164272 files and directories currently installed.)
Preparing to replace alsa-intel-hda-update-diwic-m6500-dkms 1.0.23 (using alsa-intel-hda-update-diwic-m6500-dkms_1.0.23_all.deb) ...

-------- Uninstall Beginning --------
Module:  alsa-intel-hda-update-diwic-m6500
Version: 1.0.23
Kernel:  2.6.32-24-generic (x86_64)
-------------------------------------

Status: Before uninstall, this module version was ACTIVE on this kernel.

snd-hda-codec-intelhdmi.ko:
 - Uninstallation
   - Deleting from: /lib/modules/2.6.32-24-generic/updates/dkms/
 - Original module
   - No original module was found for this module on this kernel.
   - Use the dkms install command to reinstall any previous module version.


snd-hda-codec-realtek.ko:
 - Uninstallation
   - Deleting from: /lib/modules/2.6.32-24-generic/updates/dkms/
 - Original module
   - No original module was found for this module on this kernel.
   - Use the dkms install command to reinstall any previous module version.


snd-hda-codec-cirrus.ko:
 - Uninstallation
   - Deleting from: /lib/modules/2.6.32-24-generic/updates/dkms/
 - Original module
   - No original module was found for this module on this kernel.
   - Use the dkms install command to reinstall any previous module version.


snd-hda-codec-ca0110.ko:
 - Uninstallation
   - Deleting from: /lib/modules/2.6.32-24-generic/updates/dkms/
 - Original module
   - No original module was found for this module on this kernel.
   - Use the dkms install command to reinstall any previous module version.


snd-hda-codec-idt.ko:
 - Uninstallation
   - Deleting from: /lib/modules/2.6.32-24-generic/updates/dkms/
 - Original module
   - No original module was found for this module on this kernel.
   - Use the dkms install command to reinstall any previous module version.


snd-hda-codec-analog.ko:
 - Uninstallation
   - Deleting from: /lib/modules/2.6.32-24-generic/updates/dkms/
 - Original module
   - No original module was found for this module on this kernel.
   - Use the dkms install command to reinstall any previous module version.


snd-hda-intel.ko:
 - Uninstallation
   - Deleting from: /lib/modules/2.6.32-24-generic/updates/dkms/
 - Original module
   - No original module was found for this module on this kernel.
   - Use the dkms install command to reinstall any previous module version.


snd-hda-codec-nvhdmi.ko:
 - Uninstallation
   - Deleting from: /lib/modules/2.6.32-24-generic/updates/dkms/
 - Original module
   - No original module was found for this module on this kernel.
   - Use the dkms install command to reinstall any previous module version.


snd-hda-codec-atihdmi.ko:
 - Uninstallation
   - Deleting from: /lib/modules/2.6.32-24-generic/updates/dkms/
 - Original module
   - No original module was found for this module on this kernel.
   - Use the dkms install command to reinstall any previous module version.


snd-hda-codec-si3054.ko:
 - Uninstallation
   - Deleting from: /lib/modules/2.6.32-24-generic/updates/dkms/
 - Original module
   - No original module was found for this module on this kernel.
   - Use the dkms install command to reinstall any previous module version.


snd-hda-codec-via.ko:
 - Uninstallation
   - Deleting from: /lib/modules/2.6.32-24-generic/updates/dkms/
 - Original module
   - No original module was found for this module on this kernel.
   - Use the dkms install command to reinstall any previous module version.


snd-hda-codec-conexant.ko:
 - Uninstallation
   - Deleting from: /lib/modules/2.6.32-24-generic/updates/dkms/
 - Original module
   - No original module was found for this module on this kernel.
   - Use the dkms install command to reinstall any previous module version.


snd-hda-codec-cmedia.ko:
 - Uninstallation
   - Deleting from: /lib/modules/2.6.32-24-generic/updates/dkms/
 - Original module
   - No original module was found for this module on this kernel.
   - Use the dkms install command to reinstall any previous module version.


snd-hda-codec.ko:
 - Uninstallation
   - Deleting from: /lib/modules/2.6.32-24-generic/updates/dkms/
 - Original module
   - No original module was found for this module on this kernel.
   - Use the dkms install command to reinstall any previous module version.

depmod......

DKMS: uninstall Completed.

------------------------------
Deleting module version: 1.0.23
completely from the DKMS tree.
------------------------------
Done.
Unpacking replacement alsa-intel-hda-update-diwic-m6500-dkms ...
Setting up alsa-intel-hda-update-diwic-m6500-dkms (1.0.23) ...
Loading new alsa-intel-hda-update-diwic-m6500-1.0.23 DKMS files...
First Installation: checking all kernels...
Building only for 2.6.32-24-generic
Building for architecture x86_64
Building initial module for 2.6.32-24-generic
Done.

snd-hda-codec-intelhdmi.ko:
Running module version sanity check.
Warning! Cannot do version sanity checking because multiple snd-hda-codec-intelhdmi.ko
modules were found in kernel 2.6.32-24-generic.
 - Original module
   - Multiple original modules exist but DKMS does not know which to pick
   - Due to the confusion, none will be considered during a later uninstall
 - Multiple same named modules!
   - 2 named snd-hda-codec-intelhdmi.ko in /lib/modules/2.6.32-24-generic/
 - Installation
   - Installing to /lib/modules/2.6.32-24-generic/updates/dkms/

snd-hda-codec-realtek.ko:
Running module version sanity check.
Warning! Cannot do version sanity checking because multiple snd-hda-codec-realtek.ko
modules were found in kernel 2.6.32-24-generic.
 - Original module
   - Multiple original modules exist but DKMS does not know which to pick
   - Due to the confusion, none will be considered during a later uninstall
 - Multiple same named modules!
   - 2 named snd-hda-codec-realtek.ko in /lib/modules/2.6.32-24-generic/
 - Installation
   - Installing to /lib/modules/2.6.32-24-generic/updates/dkms/

snd-hda-codec-cirrus.ko:
Running module version sanity check.
Warning! Cannot do version sanity checking because multiple snd-hda-codec-cirrus.ko
modules were found in kernel 2.6.32-24-generic.
 - Original module
   - Multiple original modules exist but DKMS does not know which to pick
   - Due to the confusion, none will be considered during a later uninstall
 - Multiple same named modules!
   - 2 named snd-hda-codec-cirrus.ko in /lib/modules/2.6.32-24-generic/
 - Installation
   - Installing to /lib/modules/2.6.32-24-generic/updates/dkms/

snd-hda-codec-ca0110.ko:
Running module version sanity check.
Warning! Cannot do version sanity checking because multiple snd-hda-codec-ca0110.ko
modules were found in kernel 2.6.32-24-generic.
 - Original module
   - Multiple original modules exist but DKMS does not know which to pick
   - Due to the confusion, none will be considered during a later uninstall
 - Multiple same named modules!
   - 2 named snd-hda-codec-ca0110.ko in /lib/modules/2.6.32-24-generic/
 - Installation
   - Installing to /lib/modules/2.6.32-24-generic/updates/dkms/

snd-hda-codec-idt.ko:
Running module version sanity check.
Warning! Cannot do version sanity checking because multiple snd-hda-codec-idt.ko
modules were found in kernel 2.6.32-24-generic.
 - Original module
   - Multiple original modules exist but DKMS does not know which to pick
   - Due to the confusion, none will be considered during a later uninstall
 - Multiple same named modules!
   - 2 named snd-hda-codec-idt.ko in /lib/modules/2.6.32-24-generic/
 - Installation
   - Installing to /lib/modules/2.6.32-24-generic/updates/dkms/

snd-hda-codec-analog.ko:
Running module version sanity check.
Warning! Cannot do version sanity checking because multiple snd-hda-codec-analog.ko
modules were found in kernel 2.6.32-24-generic.
 - Original module
   - Multiple original modules exist but DKMS does not know which to pick
   - Due to the confusion, none will be considered during a later uninstall
 - Multiple same named modules!
   - 2 named snd-hda-codec-analog.ko in /lib/modules/2.6.32-24-generic/
 - Installation
   - Installing to /lib/modules/2.6.32-24-generic/updates/dkms/

snd-hda-intel.ko:
Running module version sanity check.
Warning! Cannot do version sanity checking because multiple snd-hda-intel.ko
modules were found in kernel 2.6.32-24-generic.
 - Original module
   - Multiple original modules exist but DKMS does not know which to pick
   - Due to the confusion, none will be considered during a later uninstall
 - Multiple same named modules!
   - 2 named snd-hda-intel.ko in /lib/modules/2.6.32-24-generic/
 - Installation
   - Installing to /lib/modules/2.6.32-24-generic/updates/dkms/

snd-hda-codec-nvhdmi.ko:
Running module version sanity check.
Warning! Cannot do version sanity checking because multiple snd-hda-codec-nvhdmi.ko
modules were found in kernel 2.6.32-24-generic.
 - Original module
   - Multiple original modules exist but DKMS does not know which to pick
   - Due to the confusion, none will be considered during a later uninstall
 - Multiple same named modules!
   - 2 named snd-hda-codec-nvhdmi.ko in /lib/modules/2.6.32-24-generic/
 - Installation
   - Installing to /lib/modules/2.6.32-24-generic/updates/dkms/

snd-hda-codec-atihdmi.ko:
Running module version sanity check.
Warning! Cannot do version sanity checking because multiple snd-hda-codec-atihdmi.ko
modules were found in kernel 2.6.32-24-generic.
 - Original module
   - Multiple original modules exist but DKMS does not know which to pick
   - Due to the confusion, none will be considered during a later uninstall
 - Multiple same named modules!
   - 2 named snd-hda-codec-atihdmi.ko in /lib/modules/2.6.32-24-generic/
 - Installation
   - Installing to /lib/modules/2.6.32-24-generic/updates/dkms/

snd-hda-codec-si3054.ko:
Running module version sanity check.
Warning! Cannot do version sanity checking because multiple snd-hda-codec-si3054.ko
modules were found in kernel 2.6.32-24-generic.
 - Original module
   - Multiple original modules exist but DKMS does not know which to pick
   - Due to the confusion, none will be considered during a later uninstall
 - Multiple same named modules!
   - 2 named snd-hda-codec-si3054.ko in /lib/modules/2.6.32-24-generic/
 - Installation
   - Installing to /lib/modules/2.6.32-24-generic/updates/dkms/

snd-hda-codec-via.ko:
Running module version sanity check.
Warning! Cannot do version sanity checking because multiple snd-hda-codec-via.ko
modules were found in kernel 2.6.32-24-generic.
 - Original module
   - Multiple original modules exist but DKMS does not know which to pick
   - Due to the confusion, none will be considered during a later uninstall
 - Multiple same named modules!
   - 2 named snd-hda-codec-via.ko in /lib/modules/2.6.32-24-generic/
 - Installation
   - Installing to /lib/modules/2.6.32-24-generic/updates/dkms/

snd-hda-codec-conexant.ko:
Running module version sanity check.
Warning! Cannot do version sanity checking because multiple snd-hda-codec-conexant.ko
modules were found in kernel 2.6.32-24-generic.
 - Original module
   - Multiple original modules exist but DKMS does not know which to pick
   - Due to the confusion, none will be considered during a later uninstall
 - Multiple same named modules!
   - 2 named snd-hda-codec-conexant.ko in /lib/modules/2.6.32-24-generic/
 - Installation
   - Installing to /lib/modules/2.6.32-24-generic/updates/dkms/

snd-hda-codec-cmedia.ko:
Running module version sanity check.
Warning! Cannot do version sanity checking because multiple snd-hda-codec-cmedia.ko
modules were found in kernel 2.6.32-24-generic.
 - Original module
   - Multiple original modules exist but DKMS does not know which to pick
   - Due to the confusion, none will be considered during a later uninstall
 - Multiple same named modules!
   - 2 named snd-hda-codec-cmedia.ko in /lib/modules/2.6.32-24-generic/
 - Installation
   - Installing to /lib/modules/2.6.32-24-generic/updates/dkms/

snd-hda-codec.ko:
Running module version sanity check.
Warning! Cannot do version sanity checking because multiple snd-hda-codec.ko
modules were found in kernel 2.6.32-24-generic.
 - Original module
   - Multiple original modules exist but DKMS does not know which to pick
   - Due to the confusion, none will be considered during a later uninstall
 - Multiple same named modules!
   - 2 named snd-hda-codec.ko in /lib/modules/2.6.32-24-generic/
 - Installation
   - Installing to /lib/modules/2.6.32-24-generic/updates/dkms/

depmod....

DKMS: install Completed.

john@john-laptop:~/Downloads$