On Thu, 2009-09-10 at 22:15 -0600, Dariusz J. Garbowski wrote:
Yes, it is. The 'science bit' is that the kernel itself truly doesn't understand the parameter, which is why you see this message - but the radeon. prefix means it gets automatically passed on to the radeon module, which _does_ understand (and interprets) it.
Personally I consider this a kernel bug, it shouldn't display this message for parameters which will be passed to modules.
Thanks to all who responded with explanation. This indeed is confusing and I agree with you that this deserves a "bug" status...
http://bugzilla.kernel.org/show_bug.cgi?id=14164