Ubuntu – Mozilla Firefox 12 is very slow on Ubuntu 12.04 LTS

firefox

Mozilla Firefox 12 is very slow on Ubuntu 12.04 LTS. I'm saying this because I'm using it side by side with PC. I doubt that hardware acceleration was enabled with Firefox on Ubuntu, even with css animation, it lags just like my grand dad. So, how can I check it?

I have enabled the option in advance tab. I have installed my GPU driver, however my ATI Radeon HD5650 GPU on my laptop is VESA: MADISON in system detail, is this all right?

I still can't change to Chromium because it is very buggy unlike Chrome, and with its boring add-on/extension, I don't think I would want to change soon. Opera is a good deal but it can't render my language correctly. So, Firefox is my only choice, even on PC, and it's the fastest browser on PC, and the slowest browser on Ubuntu. Please help me fix this, thanks.

Best Answer

The problem is most likely with your graphics driver.

Attempt to install the ATI binary driver: https://help.ubuntu.com/community/BinaryDriverHowto/ATI

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Ubuntu – Does Firefox support hardware acceleration on Ubuntu

My Firefox's page about:config, and this is showed in graphic details.

Adapter Description       ATI Technologies Inc. -- ATI Mobility Radeon HD 5000 Series 
Vendor ID                 ATI Technologies Inc.
Device ID                 ATI Mobility Radeon HD 5000 Series 
Driver Version            4.2.11627 Compatibility Profile Context
WebGL Renderer            ATI Technologies Inc. -- ATI Mobility Radeon HD 5000 Series  -- 4.2.11627 Compatibility Profile Context
GPU Accelerated Windows   0
AzureBackend              skia

It seems the browser can detect my GPU perfectly fine just it won't use it. This issue effects both NVIDIA and AMD user.

Currently, it's impossible for Firefox to use GPU on Linux. It's discussed at Ubuntu Forums.

Ubuntu – How to install Mozilla Firefox on kubuntu 12.04

If you want to install software graphically in Kubuntu you need to use an application called Muon. You can also install packages from the command line by opening a terminal and typing, for the example related to your question, sudo apt-get install firefox. sudo tells the computer you want to do the following action with administrative privileges, apt-get is an application to install software and firefox is the name of the package you want to install. The terminal will ask for your password and, once you give it, apt-get will do the rest.

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