From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kunal Gangakhedkar Date: Thu, 20 Aug 2009 12:43:22 +0530 Subject: [ath9k-devel] Disconnect problem (DMA failed to stop in 10 ms) In-Reply-To: <1250629490.7534.20.camel@mj> References: <74d457500908121816u57b86de6j8ea54f980cf7e75f@mail.gmail.com> <200908182346.29416.kunal.gangakhedkar@gmail.com> <1250629490.7534.20.camel@mj> Message-ID: <200908201243.23193.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 2:34:50 am Pavel Roskin wrote: > On Tue, 2009-08-18 at 23:46 +0530, Kunal Gangakhedkar wrote: > > > Note that Michael noticed the performance degradation. That's another > > > target for bisection, whether it's related or not. > > > > 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. :( > > If an older driver didn't have that problem, you can use the git bisect > command to find which change introduced the slowdown, provided that you > can detect it reliably. Unfortunately, this is the only version I have tried. I decided to buy this laptop only after looking that the h/w is mostly supported in linux kernel >= 2.6.29 - which is where the ath9k got support for 9285, IIRC. After installing base kubuntu jaunty on it, I cloned the ubuntu- karmic git tree which is based on >= 2.6.30 so that I'd get both the ath9k for 9285 as well as radeonhd driver for the ATi Radeon HD 4650 that the laptop comes with. So, I don't know whether support for 9285 was working in earlier versions at all. :( If you can provide me with the starting pointers, I'll try to dig deeper. Thanks, -- Kunal