Keyboard Scancode Problems

Udo A. Steinberg (sorisor@Hell.WH8.TU-Dresden.De)
Thu, 01 Feb 2001 01:37:03 +0100


Hi all,

With all the latest kernels (at least since 2.4.0-test12)
I have had occasional problems with a PS/2 keyboard when
switching back and forth between X and text consoles.

In most cases the problem occurs when switching from X to
a text console, which renders the keyboard totally unusable.
Pressing any key results in ^W ^E and other garbage.
Sometimes pressing Ctrl fixes the problem, other times not
even SysRq works.

The kernel logs the following stuff:

keyboard: unrecognized scancode (70) - ignored
keyboard: unrecognized scancode (66) - ignored
keyboard: unknown scancode e0 71
keyboard: unknown scancode e0 70

and so forth. I cannot reliably reproduce it though.

Can someone enlighten me whether this is a keyboard problem,
X problem or something wrong with the kernel's console stuff?

-Udo.
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