This is what worked for me
I have been messing around trying to get Flash working without tearing for over a month now. This is how I did it.
Install the flash-aid addon for mozilla firefox. Make sure to run it in expert mode. With it, install the stable version of 32-bit flash and remove the old versions. Note the directories where it installs in flash-aid removal options after restarting the browser (don't remove it though).
Then, download the latest 64-bit RC (newer than the version for the beta they have on flash-aid). It will be a unix archive, but you can install this one through flash-aid as well. You have to use the option to install from a local archive (in the advanced mode).
Finally, check where it installed to the second time after restarting your browser. If necessary, copy over the stable flashplugin.so with the new one in any directories if necessary (I don't recall whether this step was done).
For some reason, flash needs both 32- and 64-bit versions installed this way, at least on my system (Sandy Bridge 64-bit Ubuntu, which is prone to tear at 1920x1080 using XV, the renderer for Adobe Flash in fullscreen on my system). Using this I solved the tearing problem, not just for flash at YouTube, but also for downloaded flash in stand-alone players using XV.
Give it a go, and let us know if it works on your configuration.
I have been messing around trying to get Flash working without tearing for over a month now. This is how I did it.
Install the flash-aid addon for mozilla firefox. Make sure to run it in expert mode. With it, install the stable version of 32-bit flash and remove the old versions. Note the directories where it installs in flash-aid removal options after restarting the browser (don't remove it though).
Then, download the latest 64-bit RC (newer than the version for the beta they have on flash-aid). It will be a unix archive, but you can install this one through flash-aid as well. You have to use the option to install from a local archive (in the advanced mode).
Finally, check where it installed to the second time after restarting your browser. If necessary, copy over the stable flashplugin.so with the new one in any directories if necessary (I don't recall whether this step was done).
For some reason, flash needs both 32- and 64-bit versions installed this way, at least on my system (Sandy Bridge 64-bit Ubuntu, which is prone to tear at 1920x1080 using XV, the renderer for Adobe Flash in fullscreen on my system). Using this I solved the tearing problem, not just for flash at YouTube, but also for downloaded flash in stand-alone players using XV.
Give it a go, and let us know if it works on your configuration.
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