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I have been unable to view any videos online since the latest Adobe Flash Player update. When I go to view a video on YouTube there is only a black screen in place of the normal player.

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If you go to do you see the spinning flash logo or your installed flash version information? – Ringtail Apr 12 '12 at 3:20
I see the installed flash version information. – user54552 Apr 12 '12 at 5:01
If you didn't see the spinning "f" logo then you need to install or re-install flash – Ringtail Apr 12 '12 at 23:32

tried sudo apt-get install flashplugin-installer ?

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I had the same problem and solved with this:

sudo mkdir /etc/adobe
echo "OverrideGPUValidation=true" >~/mms.cfg
sudo mv ~/mms.cfg /etc/adobe/
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What does this do? – blz Jan 20 '14 at 5:18
If I'm not mistaken I found here when I needed: – Claudio Sanches Jan 21 '14 at 14:15

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