Messages in this thread | ![/](/images/icornerl.gif) | | Date | Sat, 19 Nov 2005 15:05:28 +0100 | From | Jan Niehusmann <> | Subject | Re: Laptop mode causing writes to wrong sectors? |
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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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