On Sat, Nov 19, 2005 at 09:39:15AM +0100, Bart Samwel wrote:
> * A significant proportion of the people who *do* have trouble see
> messages about DMA timeouts. The problems do also occur on other
> hardware, but seem to be most pronounced on Thinkpad T40s. On those
> machines, the DMA timeout problems are triggered *especially* when the
> madwifi drivers are loaded (see
> http://bugzilla.ubuntu.com/show_bug.cgi?id=6108).
That's interesting. Both Bradley and me are using ipw2200, an in the
madwifi thread, one person also mentions he is using this driver. I
don't know if madwifi and ipw2200 use common or very similar code. But
perhaps this problem really is caused by a combination of laptop
mode / disk spinup and certain wireless drivers?
As far as I remember all corruptions I observed happened while being
connected to wireless lan. But that alone never triggered the bug, I had
to enable laptop mode as well.
Unfortunately, I still have to find a way to reliably trigger the
problem. None of my test scripts which try to trigger disk activity
while the drive is spun down caused any corruption yet.
Jan
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