Comment 3 for bug 174650
Revision history for this message
| Vu Ngoc San (san-vu-ngoc) wrote Re: xorg very slow when rotated on external monitor | #3 |
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1b1ed1a
(Get the code!)
Here are some more pieces of information.
* indeed there is no corruption, and it is quite stable (at least as stable as in the single screen config)
* if the "rotate" option is in xorg.conf, or if I do it manually after X is launched, with xrandr, the result is the same.
* if I disable DRI in xorg.conf by adding
Option "DRI" "false"
then X won't start (black screen).
However if I start without DRI AND without rotate, then I can rotate with xrandr, but the result is the same as before (slow).
* the option
Option "NoAccel" "true"
has the same effect and disabling DRI above.
* the option "AccelMethod" "EXA" or "XXA" has no visible influence
* I have also tried to disable the laptop screen by xrandr --output=LVDS --off, but the result is still the same.
I'm really out of clue here, sorry. I hope someone can make sense out of it.