Ubuntu-mate 1504 incompatibility with Celeron CPU

[sktsee]

On Wed, 05 Aug 2015 02:20:40 +0800, Bret Busby wrote:

[snip]


> 
> And now for the latest update.
> 
> I managed to install an extra couple of packages, before I stupidly
> tried to do a system update.
> 
> Part of the system update (from the iso version of the installation)
> involved a new kernel version, which, without the PAE patch being
> inbuilt into the new kernel, broke the update and broke the Ubuntu
> Software Centre.
> 
> So, the system apparently can not be updated, and, now, no more
> packages can be installed, due to the lack of a PAE patch being built
> into the kernel.
> 
> So, I guess that I now have to overturn the apparent success of the
> installation, with the reiteration that the operating system is
> apparently incompatible with Intel Celeron CPU's, due to the lack of a
> patch to fix the PAE problem, being built into the kernel, as if the
> system can not undergo security updates and bugfixes, then it can not
> be regarded as reasonably secure or stable.

The error message you listed in a later post ("This kernel does not support a non-PAE CPU.") is caused by the kernel package's pre-install script checking /proc/cpuinfo for the pae flag and bailing out of the installation if it doesn't find it. Even though your Celeron cpu is PAE capable, and even though you specified "forcepae" as a kernel parameter, your cpu is not reporting that it has pae enabled. What you'll need to do before installing a kernel update is follow the instructions at the end of this page: https://help.ubuntu.com/community/PAE/PentiumM to include pae in the flag list of enabled features. 

You may want to file a wishlist bug report against the linux-image package pre-install script to add a check to see if "forcepae" is present in /proc/cmdline so that the kernel package can be installed even if pae isn't found in /proc/cpuinfo. 

-- 
sktsee