lkml.org 
[lkml]   [2005]   [Nov]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Laptop mode causing writes to wrong sectors?
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


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-11-19 15:09    [W:0.114 / U:1.048 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site