https://bugs.freedesktop.org/show_bug.cgi?id=103788
Michel Dänzer michel@daenzer.net changed:
What |Removed |Added ---------------------------------------------------------------------------- Summary|Screen goes blank after |[DC] Screen goes blank |screen sleep and will not |after screen sleep and will |come back on |not come back on CC| |harry.wentland@amd.com, | |jordan.lazare@amd.com
--- Comment #5 from Michel Dänzer michel@daenzer.net --- (In reply to Hin-Tak Leung from comment #4)
For other reasons I am still using the fedora 26 kernel (4.12.x) - so the problem seems to be entirely due to changes in userland, or at least, outside the kernel, in libdrm or x driver.
Please file your own report, then. The dmesg attached here looks clearly like a DC (or possibly ATOM BIOS) issue.