vga_set_480_scanlines  154 arch/x86/boot/video-vga.c 	vga_set_480_scanlines(0xdf);
vga_set_480_scanlines  160 arch/x86/boot/video-vga.c 	vga_set_480_scanlines(0xdb);
vga_set_480_scanlines  166 arch/x86/boot/video-vga.c 	vga_set_480_scanlines(0xdf);