[ALUG] Deblobbed amd-gpu and HDMI

Does anyone know whether the deblobbed version of the amd-gpu module in the Linux-libre kernel (current LTS version, if it matters) is completely incapable of producing HDMI output from an Advanced Micro Devices, Inc. [AMD/ATI] Mullins [Radeon R4/R5 Graphics] (rev 45) card, or whether there's some magic incantation (legacy HDMI 2.0 mode or some such) that will make it work, please? -- Kind regards, Dan Hatton Dr. Daniel C. Hatton E-mail dan.hatton@btinternet.com (PGP public key available at <https://keys.openpgp.org>) Signal dch.28 Threema 5UAVHC96 Delta Chat OPENPGP4FPR:3345649E9BF3FD3ADDC3C5E588C6126C190AF86B#a=ut53bnr5t%40nine.testrun.org&n=Dan+Hatton Matrix @only_ohm:quassel.io WhatsApp +44 7908 352683