As of 6.14.3 the ddx will stop loading if the ddx is in UMS mode and the drm is in KMS mode to prevent display problems. UMS is no longer supported in the DDX on Linux. Support for UMS was removed in xf86 -video-ati git last month. UMS only supported chips up through evergreen and the open source 3D drivers dropped UMS support a while ago.
The open source radeon driver and fglrx are completely different driver stacks and require some system adjustments to switch between then (different kernel modules, different ddx, different 3D drivers, different libgl and libglx, etc.). It's probably easiest to have a script to switch the environments between the two drivers or something like that. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/534662 Title: [RV635] No hardware acceleration on ATI Radeon 3650 HD using 'radeon' driver To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-driver-ati/+bug/534662/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
