UbuntuHandbook

Firefox 36 Stable Released [How-to-Upgrade in Ubuntu]

Last updated: February 25, 2015

Mozilla finally announced the stable release of Firefox 36, the new release features HTTP/2 protocol support and various bug-fixes.

The full HTTP/2 protocol support in Fixfox 36 enables a faster, more scalable, and more responsive web. Firefox 36 also adds beta support for native HTML5 YouTube playback, but it’s not enabled by default. To enable this feature, go to about:config page, search for and set value of “media.mediasource.enabled” to true

Below is the full list of changes in Firefox 36 (via: Firefox 36 official release note)

Pinned tiles on the new tab page can be synced
Support for the full HTTP/2 protocol. HTTP/2 enables a faster, more scalable, and more responsive web.
Locale added: Uzbek (uz)
-remote option removed
No longer accept insecure RC4 ciphers whenever possible
Phasing out Certificates with 1024-bit RSA Keys
Shut down hangs will now show the crash reporter before exiting the program
Add-on Compatibility
Support for the ECMAScript 6 Symbol data type added
unicode-range CSS descriptor implemented
CSSOM-View scroll behavior implemented allowing smooth scrolling of content without custom libraries
object-fit and object-position implemented.
Defines how and where the content of a replaced element is displayed
isolation CSS property implemented.
Create a new stacking context to isolate groups of boxes to control which blend together
CSS3 will-change property implemented.
Hints the browser of elements that will be modified. The browser will perform some performance optimization for these
Changed JavaScript ‘const’ semantics to conform better to the ES6 specification.
The const declaration is now block-scoped and requires an initializer. It also can not be redeclared anymore.
Improved ES6 generators for better performance
Eval sources now appear in the Debugger. Debug JavaScript code that is evaluated dynamically, either as a string passed to eval() or as a string passed to the Function constructor
DOM Promises inspection
Inspector: More paste options in markup view
CSS gradients work on premultiplied colors
Fix some unexpected logout from Facebook or Google after restart
Various security fixes

How to Upgrade Firefox in Ubuntu:

Firefox 36 will be made into Ubuntu repositories very soon, by then you can upgrade Firefox through Software Updater in Ubuntu 14.10, Ubuntu 14.04, Ubuntu 12.04 or Linux Mint 17.1/13.

In Howtos Firefox, upgrade firefox in ubuntu

Firefox 35 Released – How to Upgrade in Ubuntu 14.04

Last updated: January 14, 2015

Mozilla Firefox has reached the 35 release which brings improved “Hello” video chat tool, built-in support for H.264 on OS X via native APIs, improved high quality image resizing performance, support for the CSS Font Loading API, updated PDF.js, and numerous other changes.

Here’s the full list of changes (via the official release note):

Firefox Hello with new rooms-based conversations model
New search UI improved and enabled for more locales
Access the Firefox Marketplace from the Tools menu and optional toolbar button
Built-in support for H264 (MP4) on Mac OS X Snow Leopard (10.6) and newer through native APIs
Use tiled rendering on OS X
Improved high quality image resizing performance
Improved handling of dynamic styling changes to increase responsiveness
Implemented HTTP Public Key Pinning Extension (for enhanced authentication of encrypted connections)
Added support for the CSS Font Loading API
Resource Timing API implemented
CSS filters enabled by default
Changed JavaScript ‘let’ semantics to match the ES6 specification
Support for inspecting ::before and ::after pseudo elements
Computed view: Nodes matching the hovered selector are now highlighted
Network Monitor: New request/response headers view (more info)
Added support for the EXT_blend_minmax WebGL extension
Show DOM Properties context menu item in inspector
Reduced resource usage for scaled images
PDF.js updated to version 1.0.907
Non-HTTP(S) XHR now returns correct status code
Various security fixes

Upgrade Firefox in Ubuntu:

For Ubuntu 12.04, Ubuntu 14.04, and Ubuntu 14.10, Firefox 35 will be soon made into the official Ubuntu repositories, available for upgrade through the Software Updater:

In News Firefox

Speed Up Firefox in Ubuntu 14.04 By Moving Cache to RAM

Last updated: December 21, 2014

There are a variety of ways to improve your Firefox browser’s page load times. If you have a lot of RAM to spare in Ubuntu, moving Cache to RAM can speed up Firefox since computer can access data in RAM much faster than on a hard drive.

Firefox has a built-in feature that uses the browser cache in memory instead of disk. Below I’ll you how to enable it:

1. In address bar of Firefox, type in about:config and hit Enter. Click the button says “I’ll be careful, I promise!” to pass the warning page.

2. Stop Firefox from caching to disk.

In the filter bar, type in browser.cache.disk.enable. Double-click on the result line to set value to false.

3. Enable cache to RAM and assign cache size.

To enable cache to RAM, type “browser.cache.memory.enable” in the filter bar and make sure the value of result preference is true!

To assign cache size, create a new preference:

right click on blank area -> select “New” -> Integer
type in name “browser.cache.memory.capacity” (without quotes)
type in a value, number in KB (for example, 100000 means 100,000KB or 100MB). You can set the value to -1 to tell Firefox to dynamically determine the cache size.