Editing VESA BIOS Extensions (section)

=== Mode detection ===
A few tools have been written to detect VBE modes available on a system. They generally work by invoking ''Function 01h'', which is more reliable than assuming a table of extended modes as it's part of the device's self-documentation.
* hwinfo is the hardware detection tool used in SuSE Linux and in some other [[Linux distribution]]s.<ref>[https://github.com/openSUSE/hwinfo hwinfo source code on GitHub]</ref> Running <code>hwinfo --framebuffer</code> reports graphics information, including VESA modes on a "Mode" line.
* mdt is a Linux or [[DOS]] tool that uses VESA BIOS functions to read monitor data.<ref>{{cite web |title=mdt |url=https://github.com/wfeldt/mdt |website=GitHub}}</ref>
* The Linux Real Mode Interface (LRMI) has a {{code|vbetest}} program that prints out VESA info.
* [[SciTech Software]] had a unrelated {{code|vbetest}} for DOS that dates back to 1994.
* The x86 "PC" version [[GNU GRUB]] 2 has a {{code|vbeinfo}} command for printing out available video modes and {{code|vbetest}} for trying a specific mode. They use a built-in table instead of ''Function 01h''. For other platforms, including x86 EFI, they are replaced by the more generic {{code|videoinfo}} and {{code|videotest}}.