howto enter textmode , keyboard button error

[mood kadub]

hi everybody

         I want to config some in olpc  laptop ( B-test)  and don't know how 
to get into textmode ,
I sometimes  use  ctrl+alt+f1 to switch to textmode but now i can't   ( i 
use 231 version) .

         And sometimes my keyboard did not work such as  'A' button and 'D' 
button .

Best regards

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