This may be a duplicate of bug 836250
Can you try the following to see if it is a valid work around for you?
Add this line to /etc/modprobe.d/intel-6200.conf:
options iwlagn 11n_disable=1
This may be a duplicate of bug 836250
Can you try the following to see if it is a valid work around for you?
Add this line to /etc/modprobe. d/intel- 6200.conf:
options iwlagn 11n_disable=1