I can confirm that west-chamber-dkms=20100405+svn20111107.r124-12ubuntu0.3 can be installed and the modules built and loaded successfully in Groovy with both the older and the newer version of the kernel API:
$ dkms status west-chamber, 20100405+svn20111107.r124, 5.8.0-41-generic, x86_64: installed west-chamber, 20100405+svn20111107.r124, 5.8.0-45-generic, x86_64: installed xtables-addons, 3.9, 5.8.0-41-generic, x86_64: installed xtables-addons, 3.9, 5.8.0-45-generic, x86_64: installed
I can confirm that west-chamber- dkms=20100405+ svn20111107. r124-12ubuntu0. 3 can be installed and the modules built and loaded successfully in Groovy with both the older and the newer version of the kernel API:
$ dkms status svn20111107. r124, 5.8.0-41-generic, x86_64: installed svn20111107. r124, 5.8.0-45-generic, x86_64: installed
west-chamber, 20100405+
west-chamber, 20100405+
xtables-addons, 3.9, 5.8.0-41-generic, x86_64: installed
xtables-addons, 3.9, 5.8.0-45-generic, x86_64: installed