PPA

Install kernel 4.17 on your Ubuntu 18.04

Grab it from the Ubuntu kernel Mainline PPA http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.17.1/ Download the deb files and install them. “unsigned” means no Secure Boot support.

Install Vim 8.1 on Ubuntu 18.04

Vim 8.1 is a minor release — a handful of new features have landed since Vim 8.0. The big one for me is that Vim 8.1 can run a terminal inside a Vim window. That sounds great. So I decided to put Vim 8.1 on my main machine.
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Install Firefox Quantum in Ubuntu Linux 16.04

As we all know that Firefox 57 will rename to Firefox Quantum. It means the New version Firefox will use Quantum Engine instead the old one. Even throgh Firefox 57 is still in beta,but we can install it from PPA under Ubuntu. sudo add-apt-repository ppa:mozillateam/firefox-next sudo apt-get update sudo apt-get install firefox So here it is.

Upgrading to Rhythmbox 3.4 on Ubuntu 16.04

Rhythmbox 3.4 is out, and you should upgrade. Plenty of reasons, but one matters more than the rest: it fixes the memory leak… Before, listening for too long would blow up memory usage. Not anymore — at least I haven’t hit it since upgrading.

Ubuntu: The Weird apt Repository Certificate Error, and How I Fixed It

A while back, apt-get update started throwing something weird at me: “The following signatures couldn’t be verified because the public key is not available: XXXXXXX” My first thought was whether I’d gotten myself MITM’d or DNS-poisoned — the public key just up and vanished? So I flushed the DNS cache and ran the update again. Same problem.