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The ebuild is almost the same as for 8.27.10-r1, except for the name of the "*.run" file. Unfortunately I could not make xrandr work with 8.28.8 :( (nor could I get the on the fly display switching).
*** Bug 144853 has been marked as a duplicate of this bug. ***
I found quite a few posts on google with identical problems: Using GLX_SGIX_pbuffer ERROR: version mismatch - 2D module [8.28.8] incompatible with OGL client module [8.27.10]. libGL error: InitDriver failed X Error of failed request: BadMatch (invalid parameter attributes) Major opcode of failed request: 140 (GLX) Minor opcode of failed request: 5 (X_GLXMakeCurrent) Serial number of failed request: 41 Current serial number in output stream: 41 No matter what I do, I get the mismatch with the OGL client module. Is this a problem with the ebuild or the drivers?
*ati-drivers-8.28.8 (31 Aug 2006) 31 Aug 2006; Luca Barbato <lu_zero@gentoo.org> +ati-drivers-8.28.8.ebuild: New version Closing a stale bug.