I'm was running: "apport-collect 1407505", all of my comments up there are autogenerated by apport-collect, I'm sorry for the quantities. I have updated from Ubuntu 15.10 to Ubuntu 16.04 LTS and now I'm affected from this bug.
The kernel version is: 4.4.0-21-generic Running: dmesg | egrep 'drm|radeon' I'm getting this error: [ 1.127347] [drm] Initialized drm 1.1.0 20060810 [ 1.159659] [drm] VGACON disable radeon kernel modesetting. [ 1.159734] [drm:radeon_init [radeon]] *ERROR* No UMS support in radeon module! [ 1.196474] [drm] VGACON disable radeon kernel modesetting. [ 1.196549] [drm:radeon_init [radeon]] *ERROR* No UMS support in radeon module! [ 18.569430] [drm] VGACON disable radeon kernel modesetting. [ 18.569467] [drm:radeon_init [radeon]] *ERROR* No UMS support in radeon module! I'm tried to edit the /etc/default/grub from GRUB_CMDLINE_LINUX_DEFAULT: "quiet splash" to GRUB_CMDLINE_LINUX_DEFAULT: "radeon.modeset=1" without success. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1407505 Title: No UMS support in radeon module To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1407505/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
