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If you can view Flash videos but can't view them full screen, there may be a problem between Flash and your video drivers. Learn how to work around the problem.

If you are able to view Flash videos (e.g. at YouTube), but unable to view them if you try to make them full screen, then you may have a problem with the Flash player and your video drivers. This article describes how to work around this problem. * If you are unable to view Flash content at all, see [[Flash Plugin - Keep it up to date and troubleshoot problems]]. * If you are unable to view videos at all, see [[Fix common audio and video issues]]. __TOC__ {for linux} = Preload the '''libGL.so.1''' library = On Linux, this problem can often be resolved changing the command used to launch Firefox so that a graphics library is loaded along with Firefox: # '''Ubuntu (and other GNOME-based distributions):''' Click on the {menu Preferences} menu and select {menu Main menu}. The Main Menu window appears. # Click on the program group called {menu Internet}. # Select {menu Firefox Web Browser} and click on the {button Properties} button. The Launcher properties window appears. # Insert the string <code>env LD_PRELOAD=/usr/lib/libGL.so.1</code> '''before''' the text specified in the '''Command''' field: <br/> <br/>[[Image:fb604c309992ec8d1e1b5cabb49d593e-1249820004-202-1.png]] # Click on {button Close} to dismiss the Launcher properties window. # Click on {button Close} to exit the Main menu window. If the problem is not solved, go to the next section. {/for} = Reset Zoom = Press and hold {for mac}{key command}{/for}{for win,linux}{key Ctrl}{/for} while pressing {key 0} to reset the Firefox zoom. If the problem is not solved, go to the next section. {/for} = Disable Flash hardware acceleration = {note}'''Note:''' When Flash videos are in full screen, the use of hardware acceleration depends on a Flash setting and not the Firefox hardware acceleration setting.{/note} # Make sure you are using the latest version of Flash. To check your version, see [http://www.adobe.com/products/flash/about/ Adobe's About page]. # Navigate to a page that shows a video that you can't view in full screen. # {for win,linux}Right-click{/for}{for mac}Hold down the {key Ctrl} key while you click{/for} on the video player and click {menu Settings...} in the context menu. The Adobe Flash Player Settings screen will open. # Click on the icon at the bottom-left of the Adobe Flash Player Settings window to open the Display panel. # Remove the check mark from '''Enable hardware acceleration'''. <br/> <br/>[[Image:fpSettings1.PNG]] <br/> # Click {button Close} to close the Adobe Flash Player Settings Window. # Restart Firefox. If this workaround allows you to view full screen videos, you should try to [[Upgrade your graphics drivers to use hardware acceleration and WebGL|update your graphics drivers]]. {for linux} If the problem is not solved, go to the next section. = Unredirect full screen windows in Compiz = Compiz OpenGL compositing manager is known to interfere with displaying Flash in full screen. # Go to {menu Compiz Config manager} > {menu General Options} # Check mark '''Unredirect Full Screen Windows'''. {/for} {for linux}<br/> <br/> '''''Based on information from [http://webupd8.blogspot.com/2009/07/how-to-fix-full-screen-flash-videos-in.html Web Upd8]'''''{/for} [[Template:ShareArticle|link=http://mzl.la/MJCpZW]]