linux-backports-modules-2.6.22-14-generic

[Per Lundqvist]

I recently installed the realtime kernel (linux-rt, on my dell vostro 1500 
laptop), but was hit by the bug that is described at:

   https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.22/+bug/131133

i.e.:

   [   31.295877] hda_intel: azx_get_response timeout, switching to polling mode...
   [   32.296465] hda_intel: azx_get_response timeout, switching to single_cmd mode...
   [   42.784751] hda-intel: no codecs initialized
   
A fix that worked for me on the 2.6.22-14-generic kernel is described as 
"method G" within:

   https://wiki.ubuntu.com/Gutsy_Intel_HD_Audio_Controller

i.e. installing the backports package. I install 
linux-backports-modules-rt (empty, depends on 
linux-backports-modules-2.6.22-14-rt), but that did not work. So I check 
the contents of the package:

   $ dpkg -L linux-backports-modules-2.6.22-14-rt 
   /.
   /lib
   /lib/firmware
   /lib/firmware/2.6.22-14-rt
   /usr
   /usr/share
   /usr/share/doc
   /usr/share/doc/linux-backports-modules-2.6.22-14-rt
   /usr/share/doc/linux-backports-modules-2.6.22-14-rt/copyright
   /usr/share/doc/linux-backports-modules-2.6.22-14-rt/changelog.Debian.gz

which differs a lot from the linux-backports-modules-2.6.22-14-generic:
   
   $ dpkg -L linux-backports-modules-2.6.22-14-generic 
   /.
   /lib
   /lib/firmware
   /lib/firmware/2.6.22-14-generic
   /lib/modules
   /lib/modules/2.6.22-14-generic
   /lib/modules/2.6.22-14-generic/updates
   /lib/modules/2.6.22-14-generic/updates/sound
   ...<snip>...
   /lib/modules/2.6.22-14-generic/updates/sound/pci/hda
   /lib/modules/2.6.22-14-generic/updates/sound/pci/hda/snd-hda-intel.ko
   /lib/modules/2.6.22-14-generic/updates/sound/soundcore.ko
   ...<snip>...
   /usr
   /usr/share
   /usr/share/doc
   /usr/share/doc/linux-backports-modules-2.6.22-14-generic
   /usr/share/doc/linux-backports-modules-2.6.22-14-generic/copyright
   /usr/share/doc/linux-backports-modules-2.6.22-14-generic/changelog.Debian.gz
   
is this expected? Is there some other way to get the updated driver within 
the realtime kernel tree?

using 2.6.22-14-rt gives the error mentioned above, the driver has the 
version:

   $ modinfo snd-hda-intel|egrep "filename|version"
   filename:       /lib/modules/2.6.22-14-rt/ubuntu/media/snd-hda-intel/snd-hda-intel.ko
   srcversion:     F70701A74061DA5AB13AF04

the default generic kernel has the same version:

   $ modinfo /lib/modules/2.6.22-14-generic/ubuntu/media/snd-hda-intel/snd-hda-intel.ko |grep version
   srcversion:     F70701A74061DA5AB13AF04

and the backports package for the generic kernel provides a newer version:

   $ modinfo /lib/modules/2.6.22-14-generic/updates/sound/pci/hda/snd-hda-intel.ko|grep version
   srcversion:     7C05112D0C9214E90DF6E16

thanks for any help,
Per Lundqvist