On Mon, Nov 30, 2009 at 12:57:40AM -0700, Bernhard Walle wrote: > > Mayank Kaushik schrieb: > > > > Is it something in the nvidia driver that's causing this to not work? > > Any clues on what's going wrong, or how I can debug this further? > > You should attach a serial console to debug that. Is that possible on > your system. It's also possible to use a USB-to-RS232 converter on the > machine that should be debugged. However, that only works after the USB > drivers have been loaded, so much later than a real serial console. A normal serial console will do for this particular task, but when you need very early debugging, there's also a "USB debug" cable. AFAICT, this is a sole-source item from Ajays Technology and only sold at <http://www.semiconductorstore.com/cart/pc/viewprd.asp?idProduct=12083> See Documentation/x86/earlyprintk.txt on using the device... It's on my XMAS wish list ;) -- David N. Lombard, Intel, Irvine, CA I do not speak for Intel Corporation; all comments are strictly my own.
