KDE runs on the Apple M2 (with full GPU acceleration)

Re:KDE runs on the Apple M2 (with full GPU acceleration) by yes_but_no on Friday November 25, 2022 @03:32PM (#33746449)

Some ppl have been saying reason macs doesn't support 4k 120hz using thunderbolt to hdmi 2.1 cables is a software limitation, I wonder if linux on macbook solves that

[ Parent | on HN ]

Re:KDE runs on the Apple M2 (with full GPU acceleration) by sofixa on Friday November 25, 2022 @03:38PM (#33746496)

Same with Macs not supporting display port daisy chaining over USB C (not Thunderbolt), it's purely a software limitation.

[ Parent | on HN ]

Re:KDE runs on the Apple M2 (with full GPU acceleration) by alin23 on Friday November 25, 2022 @04:01PM (#33746703)

Most often it's a hardware limitation because the cables/adapters use the MCDP2900 converter chip inside, even when they advertise HDMI2.1 support. That's the same chip inside the built-in HDMI port of the new MacBook Pro and its datasheet [0] says it only supports up to 60hz

That chip is also the reason for a lot of support emails I'm getting on Lunar (https://lunar.fyi/) because it seems to break DDC/CI and hardware brightness control stops working through cables and ports that use it.

[0] https://media.digikey.com/pdf/Data%20Sheets/MegaChips%20PDFs...

[ Parent | on HN ]