[Mesa3d-users] Solution: mach64 kernel modules for 2.6.26 kernel

[Davicillo U. <dav...@ya...>]

Dear Mike Smith 41

I think I have solved this problem, although I don't really know what I'm
doing.

It seems that the DRM developers have recently changed the code of the 
mach64_irq.c and that change is what is causing us so many problems. I have
been trying to reach a solution since January until now.

I have downloaded the latest git and afterwards modified the mach64_irq.c,
this way:
1.-as root, download with "git clone git://anongit.freedesktop.org/mesa/drm"
2.-"cd drm/linux-core"
3.-Edit the mach64_irq.c
4.-Inside the function "int mach64_driver_irq_postinstall(struct drm_device
* dev)" there is only one line "return 0;"
5.-Replace the "return 0;" by "return drm_vblank_init(dev,1);"
6.-Save the file and exit
7.-Make with "make DRM_MODULES=mach64" and "make install"
8.-Unload any previously loaded drm.ko and mach64.ko with "modprobe -rv
mach64"
9.-(optional) load the new modules with "modprobe -v mach64"
10.-Start X the way you like better. In my case no longer hangs X and my
glxgears is about 250fps. Hooray!

I hope it solves the problem for good, but I'm also a little worried about
why the DRM developers changed this. Anyway, it's worse for me that DRI hang
my PC, so I will take the risk.

Best regards. Davicillo Uno.
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