On Wed, Oct 8, 2014 at 4:41 PM, Andrey Germakovski <germakovskia at ainfosec.com> wrote: > FirePro W600 does not work with more than 4 monitors, > > > > After 5th monitor attached X acting very slow. > > > > Or if I call drmModeSetCrtc function 5 times one time for each of the > monitors, it failing out
I suspect you are running out of CPU accessible vram depending on your configuration. There are patches for mesa and the kernel to allow the use of non-CPU accessible vram for display buffers in kernel 3.17 and mesa git so you might try a newer kernel and mesa. Alex