[ath9k-devel] Disconnect problem (DMA failed to stop in 10 ms)

[Kunal Gangakhedkar <kunal.gangakhedkar@gmail.com>]

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