setting debug to 1 in drm module and current kernel (2.6.33-rc6) gives only garbage in output. see attached log.
Created attachment 32945 [details]
output of /var/log/messages
Looks fine to me, just a lot of long lines and duplicated messages. Try using dmesg to get the raw kernel data; looks like your syslog daemon is truncating things.
you are right, dmesg show the correct output. btw, this is rsyslogd from lucid. closing...