The problem is not PAE, the problem is that the kernel parameters parser
was changed as a result of the systemd debug params controversy.
You need to repeat the 'forcepae' twice in the linux kernel parameters,
before and after the -- i.e.:
linux ... forcepae -- forcepae
Kernel patch that changed the previous behaviour was:
commit 51e158c
Author: Rusty Russell <ru...@rustcorp.com.au>
Date: Mon Apr 28 11:34:33 2014 +0930
param: hand arguments after -- straight to init
The kernel parses parameters from the kernel command line up to "--";
if it doesn't recognize a parameter and it doesn't contain a '.', the
parameter gets passed to init: parameters with '=' go into init's
environment, others are passed as command line arguments to init.
Everything after "--" is passed as an argument to init.
With "forcepae -- forcepae" I did a full install of the Vivid ISO link
above. It worked ok.
(There was a non-related bug, Ubuntu/grub puts "vt.handoff=7" in
grub.cfg which causes a black screen on boot - looks like bug #913731 or
some related regression).
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https://bugs.launchpad.net/bugs/1422675
Title:
No installable kernel was found in the defined APT sources
Status in linux package in Ubuntu:
Invalid
Bug description:
I tried to install from the Ubuntu Vivid 32-bit mini.iso into a
computer with Pentium M
http://www.cnet.com/laptops/lenovo-
thinkpad-t42-2373/4507-3121_7-31155666.html
and booted the installer with the forcepae boot option. This made the
installer start and work until it should get the kernel. Then it
stopped with the following message
"No installable kernel was found in the defined APT sources ...
Continue the installation without installing a kernel?"
I checked if this is a PAE issue ... and yes, it is.
Forcepae makes the installer work, but later on, during installation,
it refuses to manage the [PAE] kernel. I tested, and it works in a
computer with CPU with a built-in PAE flag. And the trusty mini.iso
can install in the same computer with Pentium M, so this is a
regression.
At 'ctrl+alt+F4' it complains that the kernels found are not usable on
486. But forcepae should allow it. And the same kernels work when
installed with the corresponding daily Lubuntu Vivid desktop iso file.
-o-
This bug is reported from another computer, because I don't know how
to report it from the mini.iso system. So you should disregard the
collected data, that I might not be able to remove.
ProblemType: Bug
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