The driver is supposed to get information from the BIOS about which display type is connected. It uses that information to disable certain features such as DDC. Still, as a test, you might wanna add the Panel statement to the device section when running only TFT and see if this improves your results.
-- xserver-xorg-video-amd 2.7.7.6-1ubuntu2 fails at DDC module on Flat Panel https://bugs.launchpad.net/bugs/195846 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs