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On Wed, 2009-06-10 at 14:33 +0200, Johannes Geiss wrote: |
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> I updated my xorg-server to the latest version 1.5.3-r6 and now my X11 |
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> performance for OpenGL (Mesa 7.3-r1) is bad and has wrong colours (eg. |
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> glxgears). |
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I did a little investigation of my problem and saw this: |
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xorg-server-1.5.3-r6 has a library called libglx.so. This library uses |
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drmOpenOnce(NULL, "pci:0001:01:08.0", ...) |
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to get the graphics card. |
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lspci reports |
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0001:01:08.0 VGA compatible controller: |
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ATI Technologies Inc Radeon RV250 If [Radeon 9000] (rev 01) |
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So the PCI Bus ID seems to be correct. |
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libdrm-2.4.5 has the function drmOpenOnce(). This function goes down to |
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drmOpen(NULL, "pci:0001:01:08.0") and |
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drmOpenByBusid("pci:0001:01:08.0"). |
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Now drmGetBusid(fd) is called and returns "pci:0000:01:08.0". Which is |
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wrong, because it differs from the original PCI Bus ID. So my graphics |
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card will not be used with hardware accelerated OpenGL. |
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drmGetBusid() calls the kernel module drm via IOCTL |
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DRM_IOCTL_GET_UNIQUE. (see file drm_ioc32.c). So is it a bug in the |
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kernel? Whom can I report this? |
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Thanks for any suggestions |
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Johannes |
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-- |
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------//-------------------------------------------------------------- |
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// Johannes R. Geiss Zaurus, Pegasos, Amiga and C64 user |
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\\ // PGP at http://home.arcor.de/jgeiss/pgpkey.txt |
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--\X/----------------------------------------------------------------- |
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