It's still emulating the old clone mode. it just uses the mergefb clone mode rather than the old clone mode since there were just about the same code-wise. Clone mode was on by default in the old radeon driver, so the mergedfb equivalent is on by default in mergedfb. the reason for the default to clone mode was to prevent damage to external monitors because by default the chip uses crtc1 to drive both heads. if the secondary monitor can't handle the signal it could damage the monitor. hence clone mode looks at the DDC/EDID info and determines the monitor's capabilites. if it can't handle the mode it shuts it off. The problem is that the hardware is kind of quirky (especially with OEM stuff) when it comes to DDC and which head is which.
I can switch back to the old order in the mean time, however, I'm not sure if it is any more or less reliable than the current code. both work fine on my hardware. testing will prove what works best I suppose. Alex --- Michel D�nzer <[EMAIL PROTECTED]> wrote: > On Tue, 2003-10-14 at 21:58, Alex Deucher wrote: > > > > The reason mergedfb is enabled by default is to emulate the clone > > behavior in the old driver. perhaps this should be changed in the > > future? > > > > In the mean time, I may switch back to validating the modes on > crtc2 > > before crtc1. that was the way I had it initially and the way it > was > > for clone mode. > > So you are no longer actually emulating the former clone mode. > Reverting > that sounds like a very good idea. Experimental changes should > probably > be done on a branch. > > > -- > Earthling Michel Dänzer \ Debian (powerpc), XFree86 and DRI > developer > Software libre enthusiast \ > http://svcs.affero.net/rm.php?r=daenzer > __________________________________ Do you Yahoo!? The New Yahoo! Shopping - with improved product search http://shopping.yahoo.com ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. SourceForge.net hosts over 70,000 Open Source Projects. See the people who have HELPED US provide better services: Click here: http://sourceforge.net/supporters.php _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
