Xvesa is a display server for the X Window System Protocol Version 11 that works only on x86_32 Linux. It use video BIOS in VM86 mode. Supports only 4:3 resolution.
x86_64 users could use Xfbdev with vesafb kernel driver.
Xvesa doesn't use configuration file like Xorg.
Xvesa -display :0 Xvesa -screen 640x480x32 Xvesa -shadow Xvesa -listmodes Xvesa -mode 0x0117 Xvesa -force Xvesa -videoTest
Shortkeys:
Ctrl-Alt+Backspace - close Xserver Ctrl+Alt+F1