kernels and hotplug

[Bob Nielsen]

On Jan 15, 2006, at 8:40 AM, crimsun at fungus.sh.nu wrote:

> On Sun, Jan 15, 2006 at 03:16:30PM +0000, Toby Kelsey wrote:
>> I decided to start testing the unstable Dapper version by  
>> installing the
>> latest kernel.  However when I selected linux-image-2.6.15-12-686
>> Synaptic informed it must *remove* hotplug as a prerequisite.
>
> That's correct. Dapper has migrated away from hotplug, because 2.6.15
> and udev have subsumed its functionality.
>
> If you choose to run a Dapper kernel on a Breezy system, you will need
> to backport Dapper's udev as well. *** Note that this removes hotplug,
> so you will only be able to run 2.6.15 on your Breezy system.
>
>> If this is not just a bug in the dependencies, it seems to show  
>> that the
>> Ubuntu developers no longer try to keep install compatibility between
>> different kernels.  Is the policy now to only support having one  
>> kernel
>> installed?
>
> No, this is a side effect of migrating to Dapper.

You can however use a self-compiled 2.6.15 kernel without removing  
hotplug.  I had trouble compiling from the Dapper source but am using  
one compiled from the kernel.org tarball (I copied over the breezy  
configuration and used make-kpkg to compile and create the  
kernel .deb package).  I needed to use at least 2.6.14 because of  
some broken stuff in 2.6.12 (which only affects some ham radio  
applications).