For months, ever since I installed Kubuntu 11.04 on my brand new shiny laptop, Flash videos have been jerky and frequently crashed the whole darn machine when played full screen. The “Official” advice regarding x64 Firefox and Flash didn’t help at all, but I never managed to get around to Googling the problem and finding a solution… Until now!
Several threads on Ubuntu Forums suggested the Flash Aid Firefox Plugin, with many people reporting success. Now I am one of them! Although I didn’t achieve success at first, I had to do the following:
- Install FireAid plugin
- Restart Firefox
- Run FireAid Wizard
- In a command terminal, type:
sudo apt-get remove --purge flashplugin-nonfree
sudo apt-get remove --purge flashplugin-installer
sudo apt-get remove --purge flashplugin64-installer
sudo apt-get autoremove
sudo updatedb
sudo mkdir /etc/adobe
echo "OverrideGPUValidation=true" >~/mms.cfg
sudo mv ~/mms.cfg /etc/adobe/
- Reboot
Really I probably did it backwards and should have done 4 and 5 before 1, 2 and 3, but nevertheless it worked 
