On Fri, 2011-08-26 at 14:29 -0700, Suresh Siddha wrote: > And you seem to say, things were _little_ bit better by using a MTRR > script. What do you mean by _little_ ? Little in that scrolling in terminals seems to work better. A failure mode where the mouse cursor refuses to move seems to occur less often. > Do you still see the original issue of hangcheck timer elapsed and it > is just that the MTRR warning from drm driver disappeared with your > MTRR script? Yes, the hangcheck timer checks still fire intermittently and graphics performance is still hit & miss. There is a failure mode that I call the Amiga loading screen where vertical lines appear that are all a pixel wide and are continuously changing in colour. The AGP aperture is exactly 256MB in the location that the DRM warning complained about, so what I did with the script was an attempt to answer its lament. It accept that it may be completely meaningless in practice. Regards, Tony V.