My graphic card is ati radeon hd 4570. i was getting an "no screens found" error message after "startx" and i couldnt be able to get in backtrack. (both 3 and 4). i search this forum and found some...

open rtmp_def.h with kwrite or something else., in the VID/PID area (at the buttom of the file) click starting of the first line and press enter. then copy-past /* EW-7318USg */\
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