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On 11/22/2010 09:40 PM, Robin Atwood wrote: |
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> On Tuesday 23 November 2010, Nikos Chantziaras wrote: |
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>> On 11/22/2010 07:02 PM, Robin Atwood wrote: |
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>>> I have just gone through the steps to use the Radeon KMS driver on my old |
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>>> laptop which has an RV350 [Mobility Radeon 9600 M10]. Everything seems to |
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>>> work all right and I get the right "render string" from glxinfo. |
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>>> However, I thought it might enable compositing to work on the KDE4 |
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>>> desktop but there is no change. What's more, glxgears used to give about |
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>>> 2200 FPS but now it's 50! So have I been wasting my time? |
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>> |
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>> You have to enable compositing yourself in System Settings. |
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> |
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> Of course, but it didn't take. |
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> |
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>> KMS means you're using DRI2 now, which results in a VSync'ed OpenGL |
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>> rendering. Though I'd expect 60FPS because of VSync, not 50 :-P |
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>> |
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>> One other thing you should do is to enable the "gallium" USE flag and |
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>> re-emerge Mesa. Then switch to the Gallium driver using: |
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>> |
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>> eselect mesa r300 gallium |
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>> |
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>> Because that driver is the recommended one for your hardware (R300). |
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>> The classic driver should be avoided. |
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> |
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> Thanks, I would try that, but... |
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> |
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> # emerge -av media-libs/mesa |
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> |
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> These are the packages that would be merged, in order: |
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> |
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> Calculating dependencies... done! |
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> [ebuild U ] x11-libs/libX11-1.4.0 [1.3.6] USE="-doc -ipv6 -static-libs - |
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> test (-xcb%*)" 2,036 kB |
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> [ebuild R ] media-libs/mesa-7.8.2 USE="nptl pic xcb -debug (-gallium) - |
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> motif (-selinux)" VIDEO_CARDS="radeon -intel -mach64 -mga -nouveau -r128 - |
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> savage -sis -svga -tdfx -via" 0 kB |
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> |
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> I set "gallium" in /etc/make.conf but (-gallium) means the flag is turned off |
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> in a profile somewhere? |
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|
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Oh, you're not on ~arch. I assumed to much. I don't know how that |
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works on old versions of the drivers and Mesa, or whether Gallium3D was |
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any good with old versions of Mesa. I can only confirm that it works on |
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recent versions. |
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|
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For your KDE problem, try adding/changing these in your |
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~/.kde4/share/config/kwinrc: |
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|
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[Compositing] |
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Backend=OpenGL |
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CheckIsSafe=false |
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DisableChecks=true |
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Enabled=true |
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GLDirect=true |
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GLTextureFilter=1 |
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GLVSync=false |
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OpenGLIsUnsafe=false |
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