I'm trying to help a guy on fedoraforum.org forums that has an ATI Radeon Mobility M6 LY chipset to get DRI working.  Here's the thread: http://forum.fedoraforum.org/forum/showthread.php?t=187984

That chipset is supported by the DRI 'radeon' driver.  The Xorg.0.logs look good and show that everything is working great - right up until Xorg and/or the driver(s) try to map enough VRAM to cover the 1400x1050 LVDS panel he's got, at which point it all chokes because he doesn't have enough VRAM (19800 KB required, 16000 KB available).  We've tried every xorg.conf option/setting that seems helpful, to reduce the display resolution to 1280x800 or less, but no matter what, Xorg or the drivers keep adding that 1400x1050 mode to the list, which inevitably leads to a failed VRAM mapping and DRI is disabled at that point.  Maybe we're missing something obvious, but I just can't figure out how to set the display resolution to a reasonable number that the available VRAM could handle, and not have the software add any more higher values to the list.  I'm hoping that someone on this list has experience with this kind of hardware, or has some advice/suggestions as to what to try to set/keep the display resolution, without having it be over-ridden by the drivers.  Any help will be greatly appreciated.

Thanx and Regards,


"I may detest what you say, but I will defend to the death your right to say it." EB Hall, "Friends of Voltaire", 1906