keyboard does not work well with KDB ...

[manjunath Bangalore]

Hi,

 I have an IBM R40-e laptop and a linux-2.6.7 kernel with KDB
(kdb-v4.4-2.6.7-*) compiled into it.

 However, once I enter the kdb> prompt the "keyboard" starts behaving
erratically:
 I have observed the following erratic behavior:
   1.  Some characters are not echoed on the screen
   2.  Sometime characters are only echoed in uppercase; in this case
it is almost impossible to shift to lower case (hitting Caps Lock does
not help; though hitting it multiple times may allow lower case
characters to be inserted)

This almost makes it impossible to use a KDB with my laptop.

I tried to debug the problem by using kdb_prinf() in the
arch/i386/kdb/kdba_io.c::get_kbd_char(). But this would almost reboot
the machine once I entered the kdb prompt (probably a buffer overflow,
though I am not sure)

This problem is similar to one posted on the mailing list by Zhang,
Sonic. This can be located at
http://oss.sgi.com/archives/kdb/2002-12/msg00039.html

Questions:
       1. Has anyone encountered this problem and corrected it?
       2. Is there a solution to this problem?
       3. How should I debug this problem further? 

thanks in advance
/manjunath
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