resolved!!!!!!!!!
Long time ago, when ati broke the 3D support on ati 92000 card with its propriaritary driver, I used a workaround by creating a symbolic link between libGL and an older version of libGL:
/usr/lib/libGL.so.1 -> libGL.so.propriaritary_lib_before_broken_support
after, ati finally announced that they will not support anymore ati 9200. I switched to the excellent free radeon driver. With this free driver my symbolic link was on /usr/lib/libGL.so.1.2 but I forgot to remove the propriaritary lib.
After the edgy to feisty migration, I don't know why but the symbolinc link was on the libGL.so.propriaritary_lib_before_broken_support.
So, I deleted the symbolic link (and the old lib) and recreate a new one on /usr/lib/libGL.so.1.2. It works fine and I even have the desktop effect.
resolved!!!!!!!!! propriaritary_ lib_before_ broken_ support
Long time ago, when ati broke the 3D support on ati 92000 card with its propriaritary driver, I used a workaround by creating a symbolic link between libGL and an older version of libGL:
/usr/lib/libGL.so.1 -> libGL.so.
after, ati finally announced that they will not support anymore ati 9200. I switched to the excellent free radeon driver. With this free driver my symbolic link was on /usr/lib/ libGL.so. 1.2 but I forgot to remove the propriaritary lib.
After the edgy to feisty migration, I don't know why but the symbolinc link was on the libGL.so. propriaritary_ lib_before_ broken_ support.
So, I deleted the symbolic link (and the old lib) and recreate a new one on /usr/lib/ libGL.so. 1.2. It works fine and I even have the desktop effect.
Sorry.