Same result as caseyjp. After ctrl+SysRq+k the "Enter key" bug disappears for the session.
Like casejp still have the "enter key" hang on boot at gdm. ctrl+printscrn+k restarts gdm....
Video becomes corrupted after a console switch or logout/login, but this is not covered by this testcase.
Basic functionality working but vertical refresh rate is reported as 50Hz by xrandr. Running glxgears with vertical sync on reports 303 frames in 5.0 seconds or about 60Hz.
Still have the "enter key" hang on boot at gdm. ctrl+printscrn+k restarts gdm....no further issues during testing.