|Summary:||Black screen past login with RX 480, Ubuntu 16.04 and AMDgpu-pro 16.30|
|Component:||DRM/AMDgpu-pro||Assignee:||Default DRI bug account <dri-devel>|
|Status:||RESOLVED NOTOURBUG||QA Contact:|
|i915 platform:||i915 features:|
Description pyrignis 2016-07-01 18:43:32 UTC
Created attachment 124845 [details] output of the dmesg command Symptoms: Login screen renders properly Past login, the screen turns black, with the pointer visible and a blank pixel in the upper left corner. On some occasion the pointer turns from the arrow to the vertical bar. crtl+alt+F<whaterver> works and brings the user to the tty. all symptoms are reverted when the llvm driver is used. System: Ubuntu 16.04 Gnome edition (but even with unity installed and configured as default the symptoms are the same) AMD Radeon RX 480 8G AMDgpu-pro 16.30 4.4 kernel The dmesg file is the output of the command after a tty return with ctrl+alt+F4. original description here: https://www.phoronix.com/forums/forum/linux-graphics-x-org-drivers/amd-linux/881991-rx-480-on-ubuntu-has-anyone-been-able-to-use-it
Comment 1 Michel Dänzer 2016-07-04 07:05:14 UTC
From what I read on the Phoronix forums, this happens because some COGL shaders fail to compile. So it's a bug in either COGL or the AMDGPU-PRO OpenGL driver. In neither case is this the appropriate place to track it.