From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kunal Gangakhedkar Date: Thu, 20 Aug 2009 12:44:17 +0530 Subject: [ath9k-devel] Disconnect problem (DMA failed to stop in 10 ms) In-Reply-To: <19083.30385.300514.554997@gargle.gargle.HOWL> References: <74d457500908121816u57b86de6j8ea54f980cf7e75f@mail.gmail.com> <200908182346.29416.kunal.gangakhedkar@gmail.com> <19083.30385.300514.554997@gargle.gargle.HOWL> Message-ID: <200908201244.17199.kunal.gangakhedkar@gmail.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ath9k-devel@lists.ath9k.org On Wednesday 19 Aug 2009 9:21:13 am Sujith wrote: > Kunal Gangakhedkar wrote: > > Any way we can help debug this issue? > > It gets really annoying when the driver goes berserk in the middle of a > > big file transfer - even on LAN. :( > > > > rmmod'ing and modprobe'ing the driver again seems to get it working; but, > > as the network load increases, the driver again starts faltering. > > > > The problem starts especially under load on the network - say, while > > transferring ISOs from desktop to laptop, or updating ubuntu packages. > > > > When the driver exhibits the problem, the ping times on the LAN also go > > berserk - ranging from ~1ms to ~700ms while sitting next to the wireless > > router (Linksys WRT54GL running OpenWRT Kamikaze 8.09) with packets lost. > > The router is working fine because my other laptop (IBM Thinkpad R51 > > running ipw2200) never has any problems with the WLAN. > > > > I'm using linux kernel 2.6.31-4-generic (x86_64) on kubuntu jaunty on > > this new HP laptop (dv6 series). The kernel is built by myself from > > ubuntu-karmic.git (git://kernel.ubuntu.com/ubuntu/ubuntu-karmic.git) > > > > Config options related to ath9k in the kernel: > > > > kunal at plutonium:/boot$ grep 'CONFIG_ATH9K' config-2.6.31-4-generic > > CONFIG_ATH9K=m > > CONFIG_ATH9K_DEBUG=y > > Can you load the driver with the modparam 'debug=0x200' and post the kernel > log when this issue happens ? Thanks. > > Sujith I'll post the logs over the weekend - right now, tied up with work :( Thanks, -- Kunal