The PPA from yesterday didn't had the change. Please update libmupen64plus2 and not the mupen64plus meta package.
sudo add-apt-repository ppa:ppa:sven-eckelmann/ppa-mupen64plus sudo apt-get update sudo apt-get install libmupen64plus2='2.0-7~ppa2~trusty'
And I don't know if this really fixes your problem because I cannot reproduce it here. The used change can be found here: http://anonscm.debian.org/cgit/collab-maint/mupen64plus-core.git/tree/debian/patches/sdl2_fullscreen_fallback.patch
The PPA from yesterday didn't had the change. Please update libmupen64plus2 and not the mupen64plus meta package.
sudo add-apt-repository ppa:ppa: sven-eckelmann/ ppa-mupen64plus ='2.0-7~ ppa2~trusty'
sudo apt-get update
sudo apt-get install libmupen64plus2
And I don't know if this really fixes your problem because I cannot reproduce it here. The used change can be found here: http:// anonscm. debian. org/cgit/ collab- maint/mupen64pl us-core. git/tree/ debian/ patches/ sdl2_fullscreen _fallback. patch