Date: Tue, 14 Feb 2012 22:09:01 -0800 From: Adrian Chadd <adrian@freebsd.org> To: Jakob Pedersen <jakobp78@gmail.com> Cc: mobile@freebsd.org, wireless@freebsd.org Subject: Re: Problems with RaLink rt61pci/rt2561 wifi card Message-ID: <CAJ-Vmo=jR_1Ot6kMZ-RBX32p_w8pwB%2Bf5qC38S3u_UZ0Q%2BeY8w@mail.gmail.com> In-Reply-To: <CAEKTEhR2KWxBwF6YBK4AS=J27Yb53zeUpHF%2BKCnKUM0s8wK-jA@mail.gmail.com> References: <CAEKTEhR2KWxBwF6YBK4AS=J27Yb53zeUpHF%2BKCnKUM0s8wK-jA@mail.gmail.com>
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Hi, It sounds like it could be: * low TX power from your device; * Really bad RX gain settings somehow; * other fruity radio related stuff. The trouble is going to be diagnosing it. What I do in these instances is use a known-good setup (i have a bunch of laptops with AR9280's in them for this reason) to use in monitor mode - I can then get a rough estimate of TX power by just sniffing the frames your device is sending. That'd hopefully identify whether it's a TX or an RX problem. If the device works in monitor mode, you could try that: tcpdump -ni wlan0 -y IEEE802_11_RADIO Connect, then walk away from the AP. See if the RX RSSI fields in the tcpdump drop suddenly. If you get a few metres away and you're still receiving things strong, it may be a TX issue. If you suddenly stop hearing anything, it's likely an RX issue. Good luck! Adrian
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