You have vesafb enabled, either disable it or don't pay attention to these messages.
[ 0.744082] vesafb: mode is 640x480x32, linelength=2560, pages=0
[ 0.744083] vesafb: scrolling: redraw
[ 0.744085] vesafb: Truecolor: size=8:8:8:8, shift=24:16:8:0
[ 0.744137] vesafb: framebuffer at 0xef000000, mapped to 0xf7e80000, using 1216k, total 1216k
[ 0.744187] Console: switching to colour frame buffer device 80x30
[ 0.784429] fb0: VESA VGA frame buffer device
It's not clear why it gets enabled, but probably you'll need to remove "rhgb", or pass "vga=normal nomodeset" to your kernel.