Comment 1 for bug 575492

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Samiux (samiux) wrote :

After investigation, I confirmed that my Lenovo ThinkPad X200 has connection problem when it is connecting to the N router. It is working fine at G mode.

The workaround would be disabled the N mode for the Intel 5100 AGN wireless card at the moment. My solution is :

sudo nano /etc/modprobe.d/options.conf

And add the following to it.
options iwlagn 11n_disable=1 11n_disable50=1

After that, reboot your system.

Please fix this bug, thanks.