OK, I tried the "amdgpu.runpm=0" solution with the Ubuntu 16.04 LiveUSB and while it booted in high graphics mode, I still got the black screen after a few minutes.
However I don't know how this will do any good, as I'm running Ubuntu 15.10, not 16.04 where the problem occurs. I wish AMD or Canonical or whoever is responsible for the decision to make fglrx unavailable in 16.04 would reconsider and provide for a smoother transition by allowing users with graphics cards that are still unsupported by amdgpu to "opt-in" to fglrx until AMD works out the all the kinks. It's as if they just don't care about end users whatsoever. Man, am I frustrated!
OK, I tried the "amdgpu.runpm=0" solution with the Ubuntu 16.04 LiveUSB and while it booted in high graphics mode, I still got the black screen after a few minutes.
Christopher, I have done as you asked in Comment #15 on this thread, and the bug report I filed is at https:/ /bugs.launchpad .net/ubuntu/ +source/ xorg/+filebug/ 34a9fa5a- 51e8-11e6- 8b1c-68b5996a96 c8?
However I don't know how this will do any good, as I'm running Ubuntu 15.10, not 16.04 where the problem occurs. I wish AMD or Canonical or whoever is responsible for the decision to make fglrx unavailable in 16.04 would reconsider and provide for a smoother transition by allowing users with graphics cards that are still unsupported by amdgpu to "opt-in" to fglrx until AMD works out the all the kinks. It's as if they just don't care about end users whatsoever. Man, am I frustrated!