There is a similar bug report https://bugs.launchpad.net/ubuntu/+source/flashplugin-nonfree/+bug/346289 (I added "OverrideGPUValidation=true" to my /etc/adobe/mms.cfg file, and fixed my problem).
I don't know, that this bug is the same as the other, because in this bug report HTML5 videos were choppy too after suspend/wake.
There is a similar bug report https:/ /bugs.launchpad .net/ubuntu/ +source/ flashplugin- nonfree/ +bug/346289 (I added "OverrideGPUVal idation= true" to my /etc/adobe/mms.cfg file, and fixed my problem).
I don't know, that this bug is the same as the other, because in this bug report HTML5 videos were choppy too after suspend/wake.