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Latest comment: 1 January by Vlad1.96 in topic "Power management" is out of date?

Add a note for new users, that the nouveau driver is significantly slower and is missing features (Vulkan)?

It is (much) slower even on cards with basic power management for manual reclocking, see the usual benchmarks for example.

Of course we could also describe the reasons, for fairness, because mainly Nvidia is blocking the development.

G3ro (talk) 14:39, 17 October 2020 (UTC) G3roReply[reply]

Can I add such a note or section? And what form would you prefer, a sentence in the introduction or a new section "Features" or something else?
G3ro (talk) 17:28, 10 December 2020 (UTC)Reply[reply]
It would be useful if you could create something like a draft with the content you intend to add, including links supporting the claims, so we can get a better idea about how much content we're talking about. -- Lahwaacz (talk) 22:36, 10 December 2020 (UTC)Reply[reply]
Well links are always a problem with Xorg and freedesktop projects in general, the information situation is always pretty bad.
In general it is a known fact, that the Power Management of Nouveau is the biggest problem (cards without it are veery slow) and even cards with experimental (manual) reclocking support are still slower (only source I have for now is phoronix comparison between nvidia and nouveau).
Regarding Vulkan support, also phoronix article, quote: "and there isn't yet any working Nouveau Vulkan driver".
There is not much more to say, because the rest (of features) seems to be included in the linked matrix.
G3ro (talk) 19:43, 12 December 2020 (UTC)Reply[reply]
Basically it would be two sentences stating something like: "Be aware that for now Nouveau is significantly slower on most cards (see also: link to phoronix), this is mainly because of missing or incomplete support for power management."
" For now Nouveau does not support Vulkan (and OpenGL versions >4.4) (see also: link to phoronix)."
In addition we could add a sentence or section talking about the development process and that because of missing support by Nvidia the devs need to find out things by themselves, which also led to fewer developers.
G3ro (talk) 14:29, 13 December 2020 (UTC)Reply[reply]
I think adding a prominent note at the top about incompatibility and missing features with modern GPUs is more important now than ever before given that RTX 3000 (~2 years old, and upcoming RTX 4000) are completely unsupported and essential features like power management (!!) and even basic 2D & video are still unavailable on even 6 year old cards thanks to NVIDIA.
Alpyne (talk) 05:13, 4 August 2022 (UTC)Reply[reply]

"Power management" is out of date?

The power management section does not give me a true picture of the situation. The wiki says "since kernel 4.5 can be controlled through a debugfs interface located at /sys/kernel/debug/dri/*/pstate.". But cat /sys/kernel/debug/dri/0/pstate notifies about the absence of the device.

Also, I can't find information anywhere except in archwiki that power managment is an experimental feature and you need to act carefully.

But on the freedesrktop website itself, I see the information "Staring with Linux 6.7 users of Turing and Ampere GPUs can use nouveau.config=NvGspRm=1 to enable power management. It's enabled by default on Ada Lovelace and newer."

Maybe need to add information about Ampere, Turing and Ada Lovelace, and instead of information about experimentation, add simply "that it is thought to be fully implemented. May contain bugs"? Or is this feature experimental anyway? Vlad1.96 (talk) 11:03, 1 January 2024 (UTC)Reply[reply]