According to http://kernel.ubuntu.com/~kernel-ppa/info/kernel-version-map.html kernel 3.50.22 is based on the mainline kernel 3.5.7.2. According to http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.5.7.2-quantal/0003-debian-changelog.patch there are not many patches that affect your Caicos Radeon. One that might is drm/radeon: Don't destroy I2C Bus Rec in radeon_ext_tmds_enc_destroy().
According to http:// kernel. ubuntu. com/~kernel- ppa/info/ kernel- version- map.html kernel 3.50.22 is based on the mainline kernel 3.5.7.2. According to http:// kernel. ubuntu. com/~kernel- ppa/mainline/ v3.5.7. 2-quantal/ 0003-debian- changelog. patch there are not many patches that affect your Caicos Radeon. One that might is drm/radeon: Don't destroy I2C Bus Rec in radeon_ ext_tmds_ enc_destroy( ).