[Bug 107072] 4k hdmi monitor stays black on kaveri [regression]

https://bugs.freedesktop.org/show_bug.cgi?id=107072

Bug ID: 107072 Summary: 4k hdmi monitor stays black on kaveri [regression] Product: DRI Version: DRI git Hardware: Other OS: All Status: NEW Severity: normal Priority: medium Component: DRM/AMDgpu Assignee: dri-devel@lists.freedesktop.org Reporter: linuxhippy@gmail.com

After updating Fedora 28 on my Kaveri System (A8-7650K) with AMDGPU enabled from 4.16.16 to 4.17.2 my 4K HDI display stays black (the FHD display connected via HDMI continues to work as expected).

Please let me know what kind of information is required find the root cause.