It looks like that this bug is caused by the fact that mach64 driver depends on XAA, which was removed in xserver 1.13: http://<email address hidden>/msg33768.html
Maybe the proposed upstream patch will help: https://bugs.freedesktop.org/show_bug.cgi?id=51137
Waiting for the patched version of xserver-xorg-video-mach64 to appear in the Ubuntu repository.
It looks like that this bug is caused by the fact that mach64 driver depends on XAA, which was removed in xserver 1.13: /msg33768. html
http://<email address hidden>
Maybe the proposed upstream patch will help: /bugs.freedeskt op.org/ show_bug. cgi?id= 51137
https:/
Waiting for the patched version of xserver- xorg-video- mach64 to appear in the Ubuntu repository.