Date: Tue, 10 Feb 2009 09:40:42 +0100 From: Andreas Nilsson <andrnils@gmail.com> To: "Paul B. Mahol" <onemda@gmail.com> Cc: freebsd-hardware@freebsd.org Subject: Re: ipw3945 problems Message-ID: <e31a2e0902100040t35f3c1aao74f087b7b7ee8fa2@mail.gmail.com> In-Reply-To: <3a142e750902091513h745bf9ah7b33f456a8580b95@mail.gmail.com> References: <e31a2e0902041347q5c410097jcc49c7f6d5db3116@mail.gmail.com> <3a142e750902091513h745bf9ah7b33f456a8580b95@mail.gmail.com>
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On Tue, Feb 10, 2009 at 12:13 AM, Paul B. Mahol <onemda@gmail.com> wrote: > On 2/4/09, Andreas Nilsson <andrnils@gmail.com> wrote: > > Hi, > > > > I've been experiencing some weird behavior with the ipw3945 on my laptop > > running FreeBSD 7.1-RELEASE. When running on AC the card works as > expected, > > but when running unplugged the interface keeps going down and up and > down. I > > get ~10 consecutive pings before it goes down. > > > > The networks I have tested are encrypted with some WPA protocol. > > > > When starting on battery there are also some other strange behavior, > there > > are some lock-ups in the gui and xorg uses some 14% cpu @1.2GHz doing > > nothing, When the mouse has been idle for some seconds it takes a bit of > > movement to activate again. After a plug and unplug of the AC everything > > seems to work as it is supposed to. > > > > I realize this isn't very much to go on... Any logs that would help? > > > > The laptop in question is a Lenovo Thinkpad t61p. > > > > Best regards > > Andreas Nilsson > > _______________________________________________ > > freebsd-hardware@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-hardware > > To unsubscribe, send any mail to " > freebsd-hardware-unsubscribe@freebsd.org" > > > > Are you using powerd? Perhaps CPU cx states are changed? > > -- > Paul > I am using powerd, and CPU cx states are probably beeing changed. I set the corresponding tunables to allow the CPUs (cores) to reach C3. Before I started using C3 on a regular basis I did some tesing and I didn't notice any difference in connectivity. When running on AC the connection works for a while ( a random amount of time ) , but then the carrier is lost. When running in school I get really low transfer speed, somewhere around 200Kb/s from a computer in a room next door. When running on linux I get around 1+Mb/s from the same computer. Best regards Andreas Nilsson
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