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Re: Bug#618930: High network latency with ralink usb wireless device

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On Sat, Mar 19, 2011 at 05:49:04PM +0000, Richard Kettlewell wrote:
> (see also bugs.debian.org/618930
...
> I have a TP-Link TL-WN321G USB wireless adapter, which is a badged
> Ralink RT2070.  Under Debian's 2.6.32 this worked smoothly with
> rt2870sta.  On upgrading to Debian's 2.6.38, however, only rt2800usb
> was available and with that I found that ping latency is around
> 600ms.
...
>           Power Management:on

I sent a patch to disable power save by default, but then work started
to fix it instead, but then stalled.  Seems like 2.6.38 shipped with
broken power save enabled by default.  Plese read the discussion
following my RFC patch:
http://rt2x00.serialmonkey.com/pipermail/users_rt2x00.serialmonkey.com/2011-January/thread.html#3017

You can test if power saving causes your issue by disabling
it with "iwconfig wlan0 power off".

Johannes
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