Thanks to some help from Jim and remembering a few things when first getting AGP support for my TNT2 card, I've got DRI working with my new Radeon 7500. Here's what I did: Followed Jim's instructions for the kernel (although I still don't understand the significance of what this does since we're not actually creating a new kernel): ----------------------------------------------------------------- cd /usr/src/linux-2.4.9-13 edit the top level Makefile remove "custom" from EXTRAVERSION make mrproper make xconfig click "load configuration from file" load the default Red Hat config from your kernel. if you have a i686 /usr/src/linux-2.4.9-13/configs/kernel-2.4.9-i686.config click save and exit make dep ----------------------------------------------------------------- Next, I followed Jim's instructions for compiling the XFree DRM kernel modules: ----------------------------------------------------------------- install the XFree86 source rpm (from Mike Harris' site) cd /usr/src/redhat/SPECS rpm -bp XFree86.spec I put this in 2 commands so it didnt word wrap. cd /usr/src/redhat/BUILD/XFree86-4.2.0/xc/programs/Xserver cd hw/xfree86/os-support/linux/drm/kernel make -f Makefile.linux I suggest you backup your old DRM modules first copy the new modules to the right place cp gamma.o mga.o r128.o radeon.o sis.o tdfx.o /lib/modules/2.4.9-13/kernel/drivers/char/drm /sbin/depmod -a ----------------------------------------------------------------- I removed sis.o since depmod -a complained about undefined symbols in it. I then used Xconfigurator and selected Radeon AGP. I can't remember whether I needed to make any changes to the XF86Config-4 file after that or not (I don't think so). I hand edited the XF86Config-4 file and tried both "ati" and "radeon" for the driver but it does not appear to make any difference - the radeon module is listed in either case when you execute lsmod. What I did need to do was put the following in /etc/modules.conf alias char-major-10-175 agpgart options agpgart agp_try_unsupported=1 I believe this is specific to my motherboard. I've got an ASUS CUV4X and a P3-800. glxinfo now reports: direct rendering: Yes Without the modules.conf lines, it would fail when attempting to load AGP and the DRI module would then get unloaded and no 2D support. Jim suggested I look at my bios settings for AGP and the only thing I found was the aperture setting which was 32MB (which was the video memory in my TNT2 card) so I changed it to 64MB but didn't notice any speed difference after that and XFree86.0.log includes: (II) RADEON(0): Using 8 MB AGP aperture (II) RADEON(0): Using 1 MB for the ring buffer (II) RADEON(0): Using 2 MB for vertex/indirect buffers (II) RADEON(0): Using 5 MB for AGP textures which is less than 32MB total so I don't think that matters. As far as speed. It appears a little better than my TNT2 card as far as polygon rendering, although I don't have any specific numbers - that's just my best guess based on how a few OpenGL apps respond. chromium says it's running at 50fps. glxgears reports: 4947 frames in 5.0 seconds = 989.400 FPS but I'm not certain anything over the refresh rate of the monitor really makes sense for a benchmark. Jim reported some screen glitches, but I haven't noticed any yet so it may be an issue with his motherboard chipset. Hope this helps someone else. Thanks again Jim. Dave
