Sorry if this is in the wrong category, please move in the case. The X.org pivot is extremely slow. (rotate CCW function) I understand that for it to work really well one needs - A gfx card that accelerates rotation on hardware - Drivers supporting the feature on the gfx card For instance my card doesn't afaik have hardware acceleration for the function. One has to fallback to software rotation. Xrandr rotation doesn't work on Linux it seems. The usual i8xx drivers do not seem to support rotation. I seem to have to fallback to vesafb (i8xxfb doesn't support my chip) and then CCW it. It's extremely slow. When enabling the rotation it takes 2-3 seconds to redraw the complete screen. I did some more digging on the matter. It seems there aren't viable gfx card options available that would do the thing really well on hardware (not even ati/nvidia, they would lose all the other acceleration). I mean, duh? Is some works underway to correct this issue? Using pivot is a must for instance reading documents (on a large monitor you get 1:1 paper size and even larger, very nice to read a whole page at the time etc) and for page layouting and such. I know it's hard to get gfx card vendors to support more stuff but how about giving us a usably performing software solution that would do it with all the cards? (I don't mean to troll but I have to make a side note: the same hardware and on Windows the software rotation they do it quite fast and usably. It proves it is possible.)
nvidia now has support for hardware rotation. at a minimum, my quadro4 980 xgl nv28GL card works. Your mileage may vary. (xorg 6.8.2, xrandr -o left, twinview on)
i810 driver in 7.1 supports accelerated rotation
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