The non-PAE kernel is a version of the 32-bit linux kernel that does not use 48-bit addressing, limiting memory size. This kernel is often used on older systems that cannot use PAE and refuse to boot with a regular kernel.

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What upgrade options for non-PAE machine?

The last time I upgraded this machine it failed because I have a non-PAE processor. I was forced to reinstall the last, old version of Xubuntu. Now I fear I'm stuck with a discontinued distribution. ...
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Ubuntu Server on a 32- bit Non PAE Machine

I would like to install any version of Ubuntu Server on a fairly old machine to both test out Ubuntu Server and have a bit of fun. The problem I have encountered is that the machine does not have PAE ...
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PAE on Core 2 duo CPU

I have an Panasonic CF-52 with Core 2 duo P8400 CPU. I'm using Xubuntu 14.04. It has 4GB RAM. It's better to enable PAE for this system? Last time when I was using Elementary OS it was automatic ...
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Installed 14.04 on a alix board, can not update

It's the same question like here: Installed 14.04 on a non-PAE (Pentium-M), but now I can't update ("This kernel does not support a non-PAE CPU.") I get a similar error message: This ...
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Ubuntu 12.04.5 LTS unbearably slow after entering passphrase for WiFi

I've installed Ubuntu 12.04.5 LTS on an (quite old) IBM ThinkPad T40. Connecting to the internet using LAN works perfectly fine, but as soon as I "Enable Wireless" in the Network Manager, choose a (...