Comment 114 for bug 541620

Question:
I used the blacklist fix to get my RT3090 wireless card working in Ubuntu 10.10 (thanks!). However, I can only connect to 802.11b/g wireless networks and cannot connect to 802.11n networks. I can connect to wireless n networks in my Windows 7 partition. How can I troubleshoot this in Ubuntu?

Here's my output from iwconfig, lsmod, and lshw:

diafygi@diafygi-revo:~$ iwconfig wlan0
wlan0 Ralink STA ESSID:"I use Ubuntu, so should you!" Nickname:"RT2860STA"
          Mode:Managed Frequency=2.457 GHz Access Point: 1C:AF:F7:D7:0B:0B
          Bit Rate=54 Mb/s
          RTS thr:off Fragment thr:off
          Link Quality=100/100 Signal level:-43 dBm Noise level:-83 dBm
          Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
          Tx excessive retries:0 Invalid misc:0 Missed beacon:0

diafygi@diafygi-revo:~$ lsmod | grep ^rt
rt2860sta 559618 1

diafygi@diafygi-revo:~$ sudo lshw
*-network
                description: Wireless interface
                product: RT3090 Wireless 802.11n 1T/1R PCIe
                vendor: RaLink
                physical id: 0
                bus info: pci@0000:02:00.0
                logical name: wlan0
                version: 00
                serial: 1c:65:9d:59:a4:dd
                width: 32 bits
                clock: 33MHz
                capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
                configuration: broadcast=yes driver=rt2860 ip=192.168.2.100 latency=0 multicast=yes wireless=Ralink STA
                resources: irq:18 memory:febf0000-febfffff