What I am trying to do:

  • Launch Xorg server without udev device manager.

    What I have tried to do:

  • Make sure that /dev/ has all required nodes, such as /dev/input/*.
  • Make sure that all required kernel modules are loaded.
  • Launch Xorg.

    What happens:

  • Xorg starts up as excepted.
  • Xorg loads correct GPU driver and sets right screen resolution.
  • Xorg blocks all input devices (keyboard, mouse), Alt+F[1-12] does not work (can't go back to tty1).
  • Unraw'ing keyboard to take its control from X removes blocking and after unraw I can Alt+F1 back to tty1. Xorg still does not handle any input.

    Why I think that it should work:

  • Same configuration works well if udev is loaded.
  • Loading udev does not add or modify /dev/ contents, all nodes stays same.

    My main question is:

    How to make Xorg input devices work without udev?

    Any additional information about how Xorg really uses/detects/grabs keyboard would be helpful. And any additional information about what udev really does (other than populating /dev/) would also be helpful.

  • 3

    The problem isn't that the device nodes are missing, it's that X wants to talk to udev to enumerate the input devices.

    If you're not going to use udev then I suspect you'll have to write a xorg.conf that declares the input devices manually.

    | improve this answer | |
    • Any suggestions about what should I change / look for? Xorg logs reports that keyboard/mice/serverlayout are loaded (layout tree shows up correctly at xorg log). After that comes two lines saying Automatically adding devices and Automatically enabling devices (both from == default settings). Then most interesting line that says WW Hotplugging is on, devices using drivers 'kbd', 'mouse' or 'umouse' will be disabled.. And yes, I have "kbd" as keyboard driver in xorg.conf. How should it be? – Sampo Sarrala - codidact.org Nov 10 '12 at 9:20
    • Still have not found solution for this, however this answer pointed me to right direction. +1 for that. – Sampo Sarrala - codidact.org Nov 11 '12 at 22:26

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