Alan Cox wrote:
On Llu, 2005-07-18 at 21:02 -0500, John Best wrote:
Are there jumpers on the IDE devices that should be looked
at/investigated? If I hooked up devices using Cable Select vs
physically jumpering devices to primary/secondary will it make any
difference?
Sorry to break in, Alan. Cable select is bloody evil. Do not use it
if you value your sanity. IMHO after dealing with over 3,000 Linux-
based servers, "Cable select: Just say 'No'."
Can I tell which device or devices are responsible for the
DMA issues? Can I tell when buying or looking at a device whether it
supports the proper dma standards? Can I go to a web site or other
location to check for compatible dma devices?
Its almost certainly a Linux problem, especially if it worked before
FC3. There are afaik no devices sold today (or in recent history) with
broken DMA. There are however limitations on some older controllers.
Those limitations haven't mysteriously changed in FC3/4 however.
Please file a bug and assign it to my work incarnation <alan@xxxxxxxxx>.
Include the controller in question, lspci -v output, the devices
attached and dmesg output.
Alan
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