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Re: [Bug 1160346] Re: do-release-upgrade from Ubuntu 12.04 on Pentium-M fails, breaks system without any warning (This kernel does not support a non-PAE CPU)

 

> Not just that the wiki would seem to be not quite right, but also that
> some well-understood convention is needed, for use when one person
> justifiably assigns a bug to another.

The convention is already well understood among Ubuntu developers...

> So more than a month was wasted, when someone productive could have
> stepped forward.

That's not really anything that can be solved by policy or by technical
means.  And frankly, if this went unnoticed for a month, it's not likely
that someone was going to step up to work on it during that period anyway.

> PS: Great to see this Pentium-M stuff getting some love at last.  I know
> that many devs with screaming fast i7 kit think it's a non-issue, too
> old to worry about, affects a tiny minority.

Just to be clear, nothing we're doing here is going to change the
compatibility of Ubuntu 14.04 with non-PAE systems; only to stop users from
upgrading and accidentally winding up with a broken system post-upgrade.

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https://bugs.launchpad.net/bugs/1160346

Title:
  do-release-upgrade from Ubuntu 12.04 on Pentium-M fails, breaks system
  without any warning (This kernel does not support a non-PAE CPU)

Status in Ubuntu Release Upgrader:
  New
Status in “linux” package in Ubuntu:
  Invalid
Status in “ubuntu-release-upgrader” package in Ubuntu:
  Triaged

Bug description:
  Attempting to upgrade from Precise with a non-PAE kernel will result
  in a failed upgrade. do-release-upgrade should check whether the user
  is using a non-PAE kernel and refuse to run, rather than upgrading to
  a broken system with no installed kernel.

  After downloading 1.5GB+ of data and over 1000 new packages, the
  upgrade will eventually report failure. Looking through the logs there
  is no kernel installed because of the error "This kernel does not
  support a non-PAE CPU.":

  Selecting previously unselected package linux-image-3.5.0-26-generic.^M
  Unpacking linux-image-3.5.0-26-generic (from .../linux-image-3.5.0-26-generic_3.5.0-26.42_i386.deb) ...^M
  This kernel does not support a non-PAE CPU.^M
  dpkg: error processing /var/cache/apt/archives/linux-image-3.5.0-26-generic_3.5.0-26.42_i386.deb (--unpack):^M
   subprocess new pre-installation script returned error exit status 1^M
  No apport report written because MaxReports is reached already

  Related bugs:

  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/897786 Kernel is dropping non-PAE flavour
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1068862 upgrade from 12.04 to 12.10 on a sans-pae CPU leaves kernel broken

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References