Mismatch between running kernel and linux-headers packages pulled in by bcmwl and dkms

[Scott Kitterman]

Because bcmwl and dkms weren't updated for the i386 switch to prefer the pae kernel, they would pull in the wrong linux-headers-* package. bcmwl is fixed and a fix for dkms has been uploaded for precise-proposed. This may, or may not, land pre-elease.

TEST CASE (for dkms): On an i386 machine using a pae kernel - Starting without dkms or any linux-headers-* packages (linux-headers-generic, linux-headers-generic-pae, linux-headers-3.2.0-23-generic, or linux-headers-3.2.0-23-generic-pae) installed, install dkms.

See linux-headers-generic and linux-headers-3.2.0-23-generic installed.

Remove all of the above packages.

Repeat the installation with the -proposed package.

See linux-headers-generic-pae and linux-headers-3.2.0-23-generic-pae installed.

[Scott Kitterman (kitterman)]

Making this RC because it affects the ability to get internet during install (which is the recommended install configuration) so the fix needs to be on the CD.

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/986475

[Scott Kitterman (kitterman)]

Tried a second time with a wired connection active and it succeeded.

Updated log attached.

[Scott Kitterman (kitterman)]

Also fails when doing an actual install and adding extra drivers be includeded in the install. Jockey log for that attached. Same hardware as the earlier comments about the live session.

[Scott Kitterman (kitterman)]

Not a jockey bug. Due to bcmwl-kernel-source dependency not being updated for the switch to pae, the right linux source package isn't pulled into live-ship.

[Launchpad Janitor (janitor)]

This bug was fixed in the package bcmwl - 5.100.82.38+bdcom-0ubuntu6

---------------
bcmwl (5.100.82.38+bdcom-0ubuntu6) precise; urgency=high

  * Update to match switch to PAE kernel by default in precise for i386
    (LP: #986475)
    - Depend on linux-headers-generic-pae on i386 instead of
      linux-headers-generic so that the right headers are available to build
      the driver
  * Drop long obsolete lpia specific depends on linux-headers-lpia
 -- Scott Kitterman <email address hidden> Sat, 21 Apr 2012 02:09:32 -0400

[Scott Kitterman (kitterman)]

The recommends ordering in DKMS isn't helping here either.

[Martin Pitt (pitti)]

Hello Scott, or anyone else affected,

Accepted dkms into precise-proposed. The package will build now and be available in a few hours. Please test and give feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance!

[Scott Kitterman (kitterman)]

Old DKMS:

$ sudo apt-get install dkms
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
  fakeroot linux-headers-3.2.0-23 linux-headers-3.2.0-23-generic linux-headers-generic
The following NEW packages will be installed:
  dkms fakeroot linux-headers-3.2.0-23 linux-headers-3.2.0-23-generic linux-headers-generic
0 upgraded, 5 newly installed, 0 to remove and 0 not upgraded.
Need to get 12.4 MB/12.5 MB of archives.
After this operation, 67.9 MB of additional disk space will be used.
Do you want to continue [Y/n]?

New DKMS

$ sudo apt-get install dkms
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
  fakeroot linux-headers-3.2.0-23 linux-headers-3.2.0-23-generic-pae linux-headers-generic-pae
The following NEW packages will be installed:
  dkms fakeroot linux-headers-3.2.0-23 linux-headers-3.2.0-23-generic-pae linux-headers-generic-pae
0 upgraded, 5 newly installed, 0 to remove and 14 not upgraded.
Need to get 12.5 MB of archives.
After this operation, 68.0 MB of additional disk space will be used.
Do you want to continue [Y/n]?

Bug is fixed as the corred headers package is now installed.

[Launchpad Janitor (janitor)]

This bug was fixed in the package dkms - 2.2.0.3-1ubuntu3

---------------
dkms (2.2.0.3-1ubuntu3) precise-proposed; urgency=low

  * Add linux-headers-generic-pae to recommended headers packages so that i386
    installs get the right headers (LP: #986475)
 -- Scott Kitterman <email address hidden> Sat, 21 Apr 2012 15:01:27 -0400

[Dmitry Tantsur (divius)]

Hi! Can this be backported to previous versions? A've seen this problem on oneiric and maverick (and even lucid afair)

[Scott Kitterman (kitterman)]

You may have seen similar problems, but you didn't see this exact one as we
only switched to PAE by default in precise.

Trying to get all the depends/recommends aligned for the various packages
needing the headers and getting them to match the current kernel is a
Sisyphean task. Sometimes you just have to install the right one by hand. I
don't think it's worth going back to try and fix.