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Contents 1 Monitor auto-detection 1.1 EDID probe 1.2 DMI probe 1.3 X probe 1.4 No auto-detection 2 Card detection 3 References

[edit] Monitor auto-detection

XFdrake tries hard to have the good default resolution. For this it uses various hardware detection:

[edit] EDID probe

monitor-edid is used.

If it returns a preferred modeline, it is the default resolution chosen by XFdrake.

If it returns a screen size, it will compute a default resolution using this screen size

[edit] DMI probe

Since EDID probe is not always succesful, we added the ability to force the wanted resolution (especially on laptops) using DMI information.

Example of dmitable entry:

System/Manufacturer: Dell Computer .*

  System/Product Name: Inspiron 8600 
  => Resolution: 1280x800

With such an entry, using libldetect, Inspiron 8600 gets correct resolution:

% lspcidrake
...
Resolution:1280x800: Dell Computer .*|Inspiron 8600

[edit] X probe

If all this fails, we can try running xorg in a test mode and try to extract the resolution from its log

% monitor-probe-using-X
1280x800

[edit] No auto-detection

In that case, it will default to 1024x768

[edit] Card detection

Cards are detected thanks to the ldetect-lst engine (also used by lspcidrake) which lists PCI devices and uses the pcitable in order to match the proper driver. The pcitable list is managed by the Install/Tool Team and is manually updated from the kernel & xorg managed pci ids list.

See also Docs/Hardware#Graphic card.

[edit] References

• monitor auto-detection explained above is coded in libDrakX (drakxtools):
  • first Xconfig::monitor::probe() is called to fill in $monitor
  • later Xconfig::resolution_and_depth::choices() computes the wanted resolution (and also the proposed resolutions)
  • Xconfig::resolution_and_depth::size2default_resolution()