Weongyo Jeong wrote: > On Thu, Feb 26, 2009 at 06:04:17PM -0800, Sam Leffler wrote: >> Bengt Ahlgren wrote: >>> Weongyo Jeong <weongyo.je...@gmail.com> writes: >>> >>>> On Thu, Feb 26, 2009 at 01:20:36PM +0900, Nathan Butcher wrote: >>>> >>>>> I have a Buffalo WLI-U2-KG54-AI wireless USB adaptor. >>>>> It has been malfunctioning for quite a while under FreeBSD7.0 and 7.1 >>>>> >>>>> Typically, It works for a while until eventually it stalls data >>>>> transfers completely. It always seems to do this after an unspecified >>>>> amount of time. >>>>> >>>>> I know the hardware isn't at fault because the device works fine under >>>>> Linux. >>>>> >>>> Could you please check that `ifconfig <ifname> -bgscan' disabling the >>>> background scan helps your symptom? >>> The above sounds like the same problem as this: >>> >>> http://lists.freebsd.org/pipermail/freebsd-mobile/2009-February/011376.html >>> http://lists.freebsd.org/pipermail/freebsd-mobile/2009-February/011343.html >>> >>> The problem is in the background scanning logic in sys/net80211. >> I don't see how you come to this conclusion. ural is a totally >> different driver than ath and so far as I can recall you never found the >> cause for your problem w/ ath. Most of the usb wireless drivers do a >> haphazard job of synchronizing async tasks like bg scan with the >> foreground tx/rx processing. This can lead to firmware and/or usb >> issues. ath does not have these issues but I am aware of at least one >> problem w/ bg scanning in ath under RELENG_7 (that is not present in HEAD). > > I agree with sam because I saw some cases like stalls during background > scanning that most of them I think it's caused by H/W miss-operation or > miss-configuration by mistakes of driver.
I'll do some testing without the bgscan and report back. (haven't had time recently) _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"