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Explicit GPU Synchronization for Xwayland now merged

https://www.gamingonlinux.com/2024/04/explicit-gpu-synchronization-for-xwayland-now-merged/

The day is finally here. Xwayland now has the code for Explicit GPU Synchronization merged after waiting over a year for everything to be ready.

This merge resquest has finally been merged into XWayland, which means NVIDIA users are just one beta driver release away (May 15th) from probably having a good experience on Wayland now!

35 comments

umbrella

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our yearly "your nvidia gpu will finally work on wayland now!"

tarsisurdi

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You can’t deny their support for Wayland has been steadily improving with the latest driver releases. In fact it’s already in a good state if it weren’t for the flickering in certain applications caused by these issues with explicit sync which are currently being addressed.

umbrella

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i tried it recently and it was still pretty buggy for me, too late now though since i had the opportunity to move to amd

Malix

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am I correct to assume this is the thing that'll fix eg. Steam going full seizure mode under wayland + nvidia?

Rustmilian

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If by that you mean the flickering crap, then yes.

Malix

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Exactly that. Awesome and thanks.

Now, aggressive waiting for the updates begins

visor841

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Nvidia users will also need a DE update, but yeah, we're finally almost there.

tarsisurdi

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That’s true, but thankfully it’s already been merged in mutter and is underway in kwin.

The code for GNOME has already been merged, KDE has a merge request open for it too, Mesa also already has it merged in.

Rustmilian

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Tracker PR

Dirk

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Who thought individual compositors having to re-implement base features individually and over and over again would be a good idea?

Same with the dozens of different protocols and portals and all the other magic bullshit. Once feature-complete with X11,Wayland will be of same complexity.

TheGrandNagus

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Once feature-complete with X11,Wayland will be of same complexity.

I'm gonna go out on a limb and say the Wayland/X11 devs (same people) know more about the way the X11/Wayland projects are structured than you do.

Dirk

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They absolutely do. And I hope they prove me wrong.

TheGrandNagus

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They already have?

Rustmilian

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It's definitely a large leep, but it's not going to solve everything. I'd say it brings us to ~85% completion. There's still a lot of smaller issues in need of fixing, and some issues unique to specific problem cards. Nvidia needs to put in that last 10% and the community needs to put in that last 4%. The 1% are the tiny bugs spread across the ecosystem that'll get fixed overtime.

Dirk

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Nvidia shouldn't need to put anything in. It's entirely Waylands fault that it does not work well with the already existing hardware and drivers environment.

Nvidia is shit for so many reasons but not because Wayland doesn't work well with it.

Bene7rddso

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If Nvidia had worked together with Wayland devs from the beginning this wouldn't be an issue

Dirk

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Did they worked together with X11 to the same extend they need to work together with Wayland?

Rustmilian

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If Nvidia had worked together on Xorg, we wouldn't have had all of those shitty Nvidia unique x11 bugs with Nvidia's crappy proprietary drivers in the past.

Dirk

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Cannot confirm any Nvidia unique X11 bugs since everything works perfectly fine since a decade or so for me – but tons of Nvidia unique Wayland bugs (same driver version and same card). I am not quite sure if Nvidia are really the bad one in this specific case.

My whole invironment is full of stuff to make Wayland actually work with Nvidia.

$ cat .config/labwc/environment 
GBM_BACKEND=nvidia-drm
__GLX_VENDOR_LIBRARY_NAME=nvidia
LIBVA_DRIVER_NAME=nvidia
QT_QPA_PLATFORM=wayland
WLR_NO_HARDWARE_CURSORS=1
XDG_CURRENT_DESKTOP=wlr
XDG_SESSION_TYPE=wayland

Not one single line of configuration is used for X11.

Rustmilian

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Here's just a tiny fraction of the Nvidia specific bugs on X11 :

https://github.com/NVIDIA/open-gpu-kernel-modules/issues/380

https://bbs.archlinux.org/viewtopic.php?id=283461

https://forums.developer.nvidia.com/t/16-bit-overlays-broken-with-x11-and-4xx-series-driver/128067

https://bugs.kde.org/show_bug.cgi?id=460341

labwc

You're using a WM bud, wtf do you expect?

Rustmilian

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Nvidia's failure to implement the spec correctly is solely their own.

Dirk

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Its not the car manufacturers failure when the road is broken.

Rustmilian

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It's the car manufacturers failure when they can't properly put their tires on to safely drive on the road or put on tires that weren't up to code to begin with.

Sabata11792

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Dose this mean using the desktop at all will not take half my GPU?

Lojcs

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Are you sure that's not because it's running at a very low frequency?

Sabata11792

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Not sure how to check, still fairly new.

I did notice the temperatures though. The card normally idles at 30-40c having anything open after a while will have it cooking at 75ish. I would expect it to be in the 50s after a few hours of youtube, or pushing 90-100 gaming. No issues on the Windows half of the install. From what I could piece together it dose seem to be related to Wayland and the drivers. I was thinking of waiting till Nobara updates and hope it goes away.

Seems if I have anything opened and on screen like firefox or the file browser, it gets toasty.

Lojcs

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If it's reaching those temps then the answer is probably no. Hope you find a solution

Sabata11792

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That's wast I was thinking. Hopefully, if I ignore it long enough it will go away with an update.

Fizz

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Can't wait. I'm still switching to amd at the next chance I get but at least this may reduce my suffering in the meantime.