Oranges10e have tried several Browsers, including the newest Chrome and the newest Firefox, and he says:
"
Since there are many threads/topics and questions about this, I will provide the information I have found, during my long, long search for a solution to this problem (see my own Solution below).
SOLUTION (there is none):
In order to prevent endless searching for a solution to this problem (took me a few days to find out), which can be a real pain, please read this:
According to an Adobe Employee, Hardware Acceleration has been disabled in recent Adobe Flash versions for Linux and Linux only. At the time being, there is no "official" way to get it working again - not even by installing the prop. Nvidia drivers, including VDPAU acceleration. This was the solution to older Adobe Flash versions - not anymore.
The main reason for this move was:
- Security concerns.
- Unstable Nvidia/AMD/Intel and Open Source drivers - in combination with Adobe Flash Hardware-Acceleration.
Here the Link to the thread, where this has been discussed and confirmed: http://forums.adobe.com/thread/911321
Quote from the Link above:
"Unfortunately given the current landscape of graphics drivers and support for Linux based operating systems, we could not support Linux with Hardware Acceleration. Most drivers, including the ones provided from Intel/NVIDIA/AMD were too unstable to consistently work with the Flash Player. Sorry for the inconvienience." - Charbs09, Adobe Employee
"As of FP 11.0.1.152 there is no way to turn on HW Acceleration for Linux. We disabled it entirely facing security concerns, but we may re-enable an unsupported method in a future release." - Charbs09, Adobe Employee
So, before you go out and buy an ION Netbook, Nettop or any kind of PC, wishing to use it in a combination of Linux/Ubuntu and Adobe Flash 11.x, with the intention to playback HD-Videos (720p, 1080p) with full Hardware Acceleration, please consider the above mentioned info. I did not, and sadly, I realized this too late (because I was trying out several other methodes to get this working again, before I found the Link above). "
One thing that worked for me was disabling the "VLC Multimedia Plugin" in chrome://plugins. Then I discovered this question, which suggested replacing the chromium-codecs-ffmpeg package with chromium-codecs-ffmpeg-extra. One
sudo apt-get install chromium-codecs-ffmpeg-extra
(which automatically removed the non--extra version) later and everything was working perfectly.
Best Answer
You're using the 64bit beta, and it looks like Facebook's version check code isn't accepting it. I get the same message in Facebook with that version of Flash on Firefox and Chrome. I don't think there's anything you can do but go back to the release version. Unless there's a Firefox extension that fakes plugin versions?
For what it's worth it's easier to disable different versions of a plugin on the fly in Chrome/ium on its about:plugins page.