Couldn’t AMD just release that as firmware/binary blob and call that from
the open source driver to circumvent the issue?
blastersyndrome 12/10/2025||
Legally speaking, what is stopping someone from just reverse-engineering the specification and publishing it online somewhere?
superxpro12 12/10/2025||
Probably a lawyer with little legal standing that is however funded by a very large checkbook.
Avamander 12/10/2025||
I suspect there isn't anything really stopping them (especially in the EU) except threats.
henearkr 12/11/2025||
What is preventing the emergence of an open source project providing the HDMI 2.1 bytecode ready to be downloaded into a FPGA, giving any Linux user the possibility to very easily DIY an adapter?
Or even sell and ship the hardware without any loaded bytecode, and then users load it beforehand?
modeless 12/10/2025||
This is fundamentally about DRM, isn't it? There is a working open source implementation already, but the HDMI cartel won't allow an open source implementation to have the encryption keys required to interface with the DRM in existing devices?
jsheard 12/10/2025|
Source devices aren't required to output a DRM'ed signal though, are they? I think the DRM is only required on the receiver side. In that case a compliant source wouldn't need any keys, and besides, that wasn't a blocker for the previous HDMI versions which supported DRM too.
modeless 12/10/2025||
IIUC they're required to do a handshake involving encryption. Which is a form of DRM to enforce centralized control over the device ecosystem even if the subsequent video signals are not encrypted.
janc_ 12/11/2025||
That sounds like an anti-competitive action by a near-monopoly player…
freeopinion 12/11/2025||
I always choose DP. I didn't even know there was this issue with HDMI.
waysa 12/11/2025||
Adapting DP to HDMI using the Synaptics VMM7100 chip is apparently the best (most feature complete) workaround for now. It's the same one that Intel uses in their Arc GPUs.
preisschild 12/11/2025|
Is this the one in the Cable Matters 102101-BLK DP->HDMI adapter?