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Re-enabling wireless n

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I have installed OpenSuse 13.1 and I have slow wifi. Network Manager is saying that the connection speed is 1MBit/s and Band b/g. Normally I get 54MBit/s
I had the same trouble with 12.3 and fixed it by disabling the n band through this thread.
https://forums.opensuse.org/english/...slow-wifi.html

For some reason after my install I don't have the n band (according to the network manager). I didn't upgrade when installing 13.1 but only formatted the root partition not home.
I have changed
Code:

etc/modprobe.d/50-iwlagn.conf
to
Code:

options iwlagn 11n_disable=0
rebooted but no change. I cant see any reason it would have kept the same same settings after I formatted.

I'm running OpenSuse 13.1
with KDE
Code:

02:00.0 Network controller [0280]: Intel Corporation Centrino Wireless-N 130 [8086:0896] (rev 34)
        Subsystem: Intel Corporation Centrino Wireless-N 130 BGN [8086:5005]
        Flags: bus master, fast devsel, latency 0, IRQ 45
        Memory at f7200000 (64-bit, non-prefetchable) [size=8K]
        Capabilities: [c8] Power Management version 3
        Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
        Capabilities: [e0] Express Endpoint, MSI 00
        Capabilities: [100] Advanced Error Reporting
        Capabilities: [140] Device Serial Number dc-a9-71-ff-ff-0a-2e-90
        Kernel driver in use: iwlwifi
        Kernel modules: iwlwifi

In 12.3 when I disabled the n band it was by accident that I got it working, so I'm not having much success reversing what I did.

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