AnsweredAssumed Answered

Ubuntu 16.04 Blank screen with RX 460 graphics and gnome 3

Question asked by andrew42 on Oct 7, 2016
Latest reply on Mar 31, 2017 by cgameing

I have an MSI Radeon RX460 graphics card, and have installed the latest (as of today) amdgpu-pro-driver, amdgpu-pro_16.30.3-315407.tar.xz. So far so good, good login screen at full 4k resolution. However, when I log in to a gnome 3 session, I get blank screens with a few lines of noise along the bottom of one monitor. There are windows there as the mouse cursor (which is displayed) changes as it's moved around. 2 monitors in use, 4K secondary, 2560x1440 primary.

Unity works fine, as does gnome flashback (both metacity and compiz), but not gnome, gnome classic nor cinnamon. However, my preferred desktop is gnome 3, and I'd like it to work.

I believe that Gnome 3 uses the EGL interface, and that there may be some issue with that in the amdgpu driver?  es_info and all of the es* test programs segfault with the radeon card and driver.

uname -a says:

Linux chaos2 4.4.0-38-generic #57-Ubuntu SMP Tue Sep 6 15:42:33 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux 

lspci | grep -i VGA says:

01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Device 67ef (rev cf) 

lsmod|grep amdgpu says:

amdgpu               1961984  8

ttm                    94208  1 amdgpu

i2c_algo_bit           16384  2 i915,amdgpu

drm_kms_helper        147456  2 i915,amdgpu

drm                   364544  12 ttm,i915,drm_kms_helper,amdgpu

Can anyone suggest any way to fix this?