Problem still exists in 4.16.10 kernel from http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.16.10/ (#uname -r output is 4.16.10-041610-generic )
dmesg output gives same error output as before when amdgpu.dc=1 [ 1.866312] [drm] amdgpu: 1024M of VRAM memory ready [ 1.866316] [drm] amdgpu: 3072M of GTT memory ready. [ 1.866332] [drm] GART: num cpu pages 262144, num gpu pages 262144 [ 1.866382] [drm] PCIE GART of 1024M enabled (table at 0x000000F400040000). [ 1.866500] [drm] Internal thermal controller without fan control [ 1.866504] [drm] amdgpu: dpm initialized [ 1.867685] [drm] Found UVD firmware Version: 1.55 Family ID: 9 [ 1.868113] [drm] Found VCE firmware Version: 50.10 Binary ID: 2 [ 1.870125] [drm:construct [amdgpu]] *ERROR* construct: Invalid Connector ObjectID from Adapter Service for connector index:3! type 0 expected 3 [ 1.870214] [drm:construct [amdgpu]] *ERROR* construct: Invalid Connector ObjectID from Adapter Service for connector index:4! type 0 expected 3 [ 1.870337] [drm:construct [amdgpu]] *ERROR* construct: Invalid Connector ObjectID from Adapter Service for connector index:5! type 0 expected 3 [ 1.870445] [drm:construct [amdgpu]] *ERROR* construct: Invalid Connector ObjectID from Adapter Service for connector index:6! type 0 expected 3 [ 1.880211] [drm] Display Core initialized with v3.1.27! [ 1.887329] [drm] SADs count is: -2, don't need to read it [ 1.887755] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). [ 1.887761] [drm] Driver supports precise vblank timestamp query. [ 1.906232] [drm] UVD initialized successfully. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1761751 Title: Black screen on 18.04 + AMD RX460 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1761751/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
