Comment 3 for bug 1558070

I was sent to this bug report automatically after a fresh install of Lubuntu 14.04 LTS on an old laptop (Sony Vaio VGN-B1XP). It was when the Software Updater was trying to update the kernel that I got this small window popping up asking me to send a bug report. It said something like "this bug has already been reported as seen in the web page".

When running the Software Updater once again and paying close attention to the Details window, I saw this message scrolling by:
"This kernel does not support a non-PAE CPU."

My CPU is one of those having PAE but not reporting it. This means I should have used the option "forcepae -- forcepae" for the install, as stated in many places, for example here: https://wiki.ubuntu.com/Lubuntu/AdvancedMethods
Although I did not use this option when installing Lubuntu. It surprises me that I got this far anyway? My running kernel in Lubuntu right now is (according to uname -r) 4.2.0-27-generic. I don't know if this kernel supports pae, but apparently not as I manage to get up and running after the install?

Anyway: Probably this error can be fixed by using the "forcepae"-option. Does anyone know if I can force this option now, in my currently running system?