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On Tuesday 23 November 2010, Nikos Chantziaras wrote: |
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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 |
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> >>> old laptop which has an RV350 [Mobility Radeon 9600 M10]. Everything |
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> >>> seems to work all right and I get the right "render string" from |
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> >>> glxinfo. However, I thought it might enable compositing to work on the |
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> >>> KDE4 desktop but there is no change. What's more, glxgears used to |
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> >>> give about 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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> >> |
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> >> re-emerge Mesa. Then switch to the Gallium driver using: |
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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 |
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> > -static-libs - test (-xcb%*)" 2,036 kB |
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> > [ebuild R ] media-libs/mesa-7.8.2 USE="nptl pic xcb -debug |
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> > (-gallium) - motif (-selinux)" VIDEO_CARDS="radeon -intel -mach64 -mga |
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> > -nouveau -r128 - 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 |
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> > off 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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|
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When I try to enable compositing KDE gives a message that it's not possible. |
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Setting "Disable checks" also gives an error message. So I cannot see any |
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actual benefit. |
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|
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Thanks for the tips! |
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-Robin |
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-- |
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Robin Atwood. |
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|
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"Ship me somewheres east of Suez, where the best is like the worst, |
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Where there ain't no Ten Commandments an' a man can raise a thirst" |
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from "Mandalay" by Rudyard Kipling |
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