Martin Graesslin looks
at problems with the interaction between KWin and some graphics drivers.
"Now that I have explained all our checks we did to ensure a smooth
user experience, I want to explain how it could happen that there are
regressions in 4.5. In 4.5 we introduced two new features which require
OpenGL Shaders: the blur effect and the lanczos filter. Both are not hard
requirements. Blur effect can easily be turned off by disabling the effect
and the lanczos filter is controlled by the general effect level settings
which is also used for Plasma and Oxygen animations. Both new features
check for the required extensions and get only activated iff the driver
claims support for it. So everything should be fine, shouldn't it?
Apparently not when it comes to the free graphics drivers (please note and
remember: we do not see such problems with the proprietary NVIDIA
" (Thanks to Jos Poortvliet)
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