[SOLVED] NetworkManager kills wireless speed

When I connect my work wifi network using NetworkManager, the speed unstable -- with it being less than 1KB/s more often than not. The connection speed seems to be fine when I disable NetworkManager and use a simple iwconfig essid key command and dhcpcd. My laptop is dual-boot, and the speed is fine in Windows as well.
NetworkManager seems to be setting my resolv.conf correctly.
Signal strength is not an issue.
Wireless chip is Intel 6000 series AGN using iwlagn driver.
Rather baffling problem to me. Ideas?
Last edited by Hamsterkill (2012-03-16 21:47:18)

I don't have access to router configuration at my job, unfortunately.
I did try manually configuring my IP, DNS and Gateway for the connection, though. When I did that, the connection speed seemed more stable -- never cutting out completely. Tx aggregation didn't get enabled in dmesg. However, wireless speed was still only 1-1.5Mbps in speedtests whereas I get a full 20Mbps when I use the iwconfig+dhcpcd method.
EDIT: It also seemed to have attached to a much farther access point for the network than normal when I did that way, so I just manually configured the BSSID as well and tried to run a speedtest. I got a nice speed initially, (15Mbps) but it cut the connection quickly and wouldn't even run the upload test. So I looked at dmesg and Tx aggregation was enabled on the connection again.
Last edited by Hamsterkill (2012-03-16 21:20:46)

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garrman wrote:
Hi Jibjib,
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dpnowak wrote:
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Welcome to Lenovo Community! w520usage
Could you try to install original Intel driver to see if it helps? This driver version is 16.6.0
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35 student in the class. each class has atleast 2 AP assigned to and able to read the signal from other 4 AP around from different classes
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and is there any thing we can do about client hugging the AP!?
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[SOLVED] NetworkManager kills wireless speed

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