Netbook (Samsung N220) on Ubuntu 10.04 slows down WiFi for other computers
- by Joachim
I encountered a really odd problem with my new netbook.
I am running Ubuntu 10.04 on a Samsung N220 Mito. So far everything worked fine.
Now I tried the machine for the first time in our work group where we have a wifi (with internet access) for all laptops. The wifi is controlled by a computer running Suse 9.3 which provides a DHCP server and imposes a firewall.
At the moment there is only a macbook in the wifi, where no problems with the internet or wifi connection are encountered.
Now coming to my actual problem: In addition to the macbook i connect the Samsung N220 to the Wifi.
Problem:
My download speed is for some reason limited to 70KB/s max. This is neither a limitation of the server/website i browse on, nor a configuration of the netbook: at home i have 500KB/s download speeds. Furthermore, it is not a default limitation for "untrusted" or "new machines" in the wifi, as for instance other new laptops get full speed internet with our wifi.
Problem:
Once the Samsung N220 is generating traffic in the wifi, the wifi is slowed down dramatically for all other machines: I run a ping to the router from the macbook. The ping times with the N220 ideling are 2-6ms. When I start downloading or browsing in the web with the N220 the ping speed drops to 800ms. Vice versa, when the macbook is generating the traffic the ping of the N220 to the rooter stays constant at around 2-6ms. So clearly, it is some problem originating from my netbook or maybe its treatment in the wifi.
Thanks for any help
