xorg-x11-drv-vesa is a video driver for the X.Org implementation of the X Window System. It is used as a fallback driver for cards with no native driver, or when the native driver does not work.
The following known issue applies to the x86 architecture:
When running the bare-metal (non-Virtualized) kernel, the X server may not be able to retrieve
EDID information from the monitor. When this occurs, the graphics driver will be unable to display resolutions highers than 800x600.
To work around this, add the following line to the
ServerLayout section of
Option "Int10Backend" "x86emu"