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On Tue, Oct 26, 2010 at 10:24 AM, Paul Hartman |
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<paul.hartman+gentoo@×××××.com> wrote: |
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> My fast desktop with Core i7 920, Nvidia GX 240, has a |
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> slower KDE UI than my 6-year-old laptop that has AMD Athlon 3200+ and |
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> ATI Radeon Mobility 9700. Simply opening a konsole window on my |
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> desktop with compositing enabled can take 2-3 seconds, when it is |
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> instant on the laptop. |
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Reply to myself here :) |
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I did some Googling and found some possible explanations/workarounds. |
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I'm away from home at the moment, so I cannot try them yet, but maybe |
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someone else can be the guinea pig. |
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The problem seems to be that TextureFromPixmap in Nvidia's drivers is |
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really slow, but it is really fast in other brands' drivers. This |
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supposedly heavily affects anything that involved a window being |
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created or resized. (Which is exactly where I see the worst slowdowns) |
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Changing from OpenGL to xrender will cause those actions to be much |
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faster, but other OpenGL things like animations will be slower. |
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Disabling direct rendering may help in some areas and hurt in others. |
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Changing OpenGL shared memory settings may help. |
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If someone tries these, feel free to post your results. :) |
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