Hi Mario, The amd-gfx mailing list at freedesktop.org that is? I'll have a look at it, as far as that would make any difference. But if the official driver is indeed open source as you say, then how would the official driver be able to support HDMI 2.1? And do you think this problem will resolve itself in the future or will there never be an open source driver with HDMI 2.1 support? Kind regards, Mischa. On Wed, Oct 23, 2024 at 5:18 PM Mario Limonciello <mario.limonciello@xxxxxxx> wrote: > > On 10/23/2024 10:12, Mischa Baars wrote: > > Hi Mario, > > > > Why would this be the wrong mailing list? > > The correct list would be the amd-gfx mailing list. > > > > > I understood it exactly as the article tells us: there is an issue > > with the HDMI 2.1 specifications and its intellectual property that > > prevents the driver from being implemented as an open source driver in > > its entirety, but that certain aspects could be implemented closed > > source through the firmware. > > > > What's holding the kernel driver developers / AMD back to take this road? > > The architecture of amdgpu can't support it. The applicable code needs > to be open source. > > > > > Kind regards, > > Mischa. > > > > On Wed, 23 Oct 2024, 15:12 Mario Limonciello, <mario.limonciello@xxxxxxx> wrote: > >> > >> On 10/23/2024 03:36, Mischa Baars wrote: > >>> Hi, > >>> > >>> I recently purchased a new television that is capable of 4k@120Hz > >>> resolution and refresh rate, but when connected with the proper cables > >>> to an AMD Radeon RX 6500 XT that does support HDMI 2.1, the maximum > >>> resolution and refresh rate I get is 4k@60Hz. > >>> > >>> I've 'spoken' to AMD about this, and all they do is recommend > >>> switching to Red Hat / Suse / Ubuntu and using the official closed > >>> source AMD drivers. If it is supposed to work after that, remains > >>> unclear. > >>> > >>> Did someone get the desired 4k@120Hz / HDMI 2.1 resolution and refresh > >>> rate to work using the in-kernel amdgpu driver? If not, why does it > >>> not work or when will it work? I have other vendors with other > >>> hardware that have different restraints on the number of operating > >>> systems that I can use, and they do not go well together. > >>> > >>> Kind regards, > >>> Michael J. Baars, the Netherlands. > >>> > >> > >> Hi, > >> > >> Your inquiry has come to the wrong mailing list, but I would mention a > >> few things because I happen to be subscribed here too. > >> > >> 1) AMD doesn't have a closed source driver. AMD has a packaged driver > >> that is a DKMS package for use in older kernels before support has > >> landed upstream. With all AMD products on the market right now there is > >> support in mainline kernel and with most products in LTS kernel too. > >> > >> 2) HDMI 2.1 covered in the past, and AMD's hands are tied. Here's some > >> recent press on it. > >> > >> https://www.tomshardware.com/pc-components/gpus/hdmi-forum-rejects-amds-hdmi-21-open-source-driver >
