The commonly accepted solution to this issue appears to be disabling hardware acceleration for Flash player. This is usually accomplished by right-clicking the Flash content, selecting
Settings and then uncheck the
Enable Hardware Acceleration option, but in the affected version of Flash player, it isn't possible to uncheck that particular option (clicking it does absolutely nothing). As such, the following two work-arounds exist for disabling hardware acceleration:
- Method 1: Create (or edit, if it already exists) the file
/etc/adobe/mms.cfg and add the following configuration parameter to it:
- Method 2: Open a YouTube video and enable fullscreen mode. Then right-click, select
Settings and uncheck the
Enable Hardware Acceleration option. For some reason this only seems to work when Flash player is in fullscreen mode.
Method 2 fixed it for me.