A while back, Adobe has finally delivered on its promise and released a native 64-bit Flash Player for Linux. If you are on Ubuntu 11.04 64-bit and want to update to Flash Player 11, here is what you have to do.
To install Flash Player 11 on Ubuntu 11.04 64-bit, we will use SevenMachines’ PPA. The PPA has been already updated with the latest release from Adobe.
So, open the Terminal and execute the command below to add the PPA.
$ sudo add-apt-repository ppa:sevenmachines/flash
Now update the software list.
$ sudo apt-get update
If you do not have KDE SC installed, create a directory a directory called kde4 at /usr/lib/. (Fore some reason, the installation requires this directory.)
$ sudo mkdir /usr/lib/kde4/
Finally install Flash 11 with the command given below.
$ sudo apt-get install flashplugin64-installer
Here is a screen shot of a Flash video being played on Ubuntu 11.04 64-bit with Flash Player 11.

Adobe has been taking quite a bashing from Linux supporters of late. First, there was the issue of them dropping AIR for Linux and then came the bashing because of the lack of updates on the experimental 64-bit Flash Player for Linux.
Well, guess what! They have just released Flash Player 11 and it includes native 64-bit support for Linux as well. When they discontinued their experimental 64-bit Flash Player earlier this year, Adobe promised to release a 64-bit version of Flash Player for Linux when they release the next major version. They have kept that promise.
Some are reporting that with Flash Player 11, the performance has improved. While some others are saying that the performance is the same as Flash Player 10. On my laptop running Ubuntu 11.04 64-bit, Flash videos seems to be running smoother after updating to Flash Player 11. However, I did not do a proper test and cannot say for sure if it the performance has definitely improved or not.
Other new features in Flash Player 11 includes the following:
- Asynchronous bitmap decoding
- Stage 3D Accelerated Graphics Rendering
- H.264 Software Encoding
- TLS Secure Sockets Support
- High Efficiency SWF Compression
- Native JSON
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