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NVIDIA 495.44 stable driver is out for Linux, adds in GBM API support

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Following on from the NVIDIA Beta 495.29.05 earlier this month, today NVIDIA has a fresh 495.44 stable driver release that builds upon it with some additional extras. This is the big one for Wayland fans, since it now works with the GBM API.

With this API now hooked up, it should mean a better Wayland experience and it's something that the KDE Plasma team are already working on supporting too.

You will also find in this release an indicator (on supported desktops) for showing Resizable BAR and the minimum Kernel version got bumped from 2.6.32 to 3.10. Additionally these new extensions are supported:

There's also a healthy dose of bug fixes and other changes noted below:

  • Fixed a bug that could cause the X server to crash when starting a new server generation on PRIME configurations.
  • Removed support for NvIFROpenGL. This functionality was deprecated in the 470.xx driver release.
  • Removed libnvidia-cbl.so from the driver package. This functionality is now provided by other driver libraries.
  • Updated nvidia.ko to load even if no supported NVIDIA GPUs are present when an NVIDIA NVSwitch device is detected in the system. Previously, nvidia.ko would fail to load into the kernel if no supported GPUs were present.
  • Fixed a bug in the Vulkan driver where unused input attributes to a vertex shader would corrupt the interpolation qualifiers for the shader.
  • Fixed a bug in the Vulkan driver where individual components of barycentric inputs could not be read.
  • Fixed a bug where VK_NVX_binary_import was advertised as supported on unsupported platforms. This caused calls to vkCreateDevice to fail if applications attempted to enable VK_NVX_binary_import on such platforms.
  • Added a new command line option, "--no-peermem", to nvidia-installer.Selecting this option prevents the installation of the nvidia-peermem kernel module.
  • Fixed a regression which prevented DisplayPort and HDMI 2.1 variable refresh rate (VRR) G-SYNC Compatible monitors from functioning correctly in variable refresh rate mode, resulting in issues such as flickering.
  • Fixed a bug that can cause a kernel crash in SLI Mosaic configurations.

Since this is a stable driver release all users should be okay to upgrade.

Article taken from GamingOnLinux.com.
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42 comments
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What about 470.82.00?
Anyway, none of two are available for Ubuntu 20.04 LTS yet.
x_wing 27 Oct
Quoting: scaineI have no idea what you're talking about here. Nvidia blocked something... how? Or is this tired old "Mir" argument, in which I'm sick of hearing it, since, after all, competing standards literally defines what Linux is.

No idea how you block open source alternatives though. Is this about that Microsoft-funded company that brought lawsuits to big Linux houses with bogus patents? I forget their name.

Yeah, sorry. No idea what this is about.

Seems that you never read the story of Nouveau driver in all this years, don't you? If you know of an alternative, let us know, as in the current scenario many Nvidia users won't be able to use wayland unless they upgrade their hardware.

Lets stop playing dumb. Nvidia pushed for EGLStream against GBM for many years. They only changed their mind after completely failing to make it work. Simple as that.
dec05eba 27 Oct
Quoting: CatKiller
Quoting: scaineIt feels like the technology that's permanently "just around the corner". I just wish it had some kind of selling point - something that made me want to try it, other than vague "better architecture" back-end stuff that I'm meant to care about, but don't, on my single-user system.
In principle, the idea is that you'd get better performance (you save a round trip between the display server and the compositor if your compositor is your display server), much better security, and ditch a bunch of cruft so maintaining it is way easier and bugfixes can happen more quickly. In practice, the spec was rather half-baked, relied on everyone having to independently reinvent the wheel, and gave Gnome devs an excuse for their CSD lunacy, and it's only now (years later) getting to the point that it's a moderately viable replacement for what we had before.
there is no round trip. Opengl applications on x11 get direct access, bypassing such round trips; and it ends up technically working the same as wayland while centralizing less software into one large software. This makes it easier to replace small components in your system and using alternatives, instead of having to use one specific desktop environment for your software to work.
Wayland isn't safer than x11 either. x11 added XACE 20 years ago and if you use selinux with x11 then you get mandatory access control and XACE window censor. In comparison, wayland doesn't have any such security mechanism. X11 is more secure than wayland! All those cases you have seen where you can do global keylogging easily under x11 are easily preventable.

Also, there is a commit in x11 now to apply different DPI for monitors. This can easily be applied to gtk and qt and most of your applications will "just work". There is also a workaround to get different dpi for monitors on x11 right now that works about as ok as on wayland.
scaine 27 Oct
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Quoting: x_wing
Quoting: scaineI have no idea what you're talking about here. Nvidia blocked something... how? Or is this tired old "Mir" argument, in which I'm sick of hearing it, since, after all, competing standards literally defines what Linux is.

No idea how you block open source alternatives though. Is this about that Microsoft-funded company that brought lawsuits to big Linux houses with bogus patents? I forget their name.

Yeah, sorry. No idea what this is about.

Seems that you never read the story of Nouveau driver in all this years, don't you? If you know of an alternative, let us know, as in the current scenario many Nvidia users won't be able to use wayland unless they upgrade their hardware.

Lets stop playing dumb. Nvidia pushed for EGLStream against GBM for many years. They only changed their mind after completely failing to make it work. Simple as that.

I genuinely wasn't playing dumb - I hadn't a single clue to what you were referring (which is why I guessed three different scenarios). But sure, you meant the fact that Nvidia refused to implement a technology that Wayland relied on. That's... I mean, sure, that's really annoying. But maybe there's some responsibility on Wayland for relying on technology that wasn't present in all drivers? Actually, thinking back, wasn't the unrealistic position of Wayland, 8 years ago, the very reason that Canonical created Mir? One of the biggest reasons anyway, I think.

Let's just be happy that Nvidia have finally come around to supporting this requirement in their proprietary driver. More than ever, this whole story shows why open source drivers are so important. And tbh, I didn't really understand that until I went AMD a couple of years ago.


Last edited by scaine on 27 October 2021 at 10:38 am UTC
3zekiel 27 Oct
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Quoting: scaine
Quoting: x_wing
Quoting: scaineI have no idea what you're talking about here. Nvidia blocked something... how? Or is this tired old "Mir" argument, in which I'm sick of hearing it, since, after all, competing standards literally defines what Linux is.

No idea how you block open source alternatives though. Is this about that Microsoft-funded company that brought lawsuits to big Linux houses with bogus patents? I forget their name.

Yeah, sorry. No idea what this is about.

Seems that you never read the story of Nouveau driver in all this years, don't you? If you know of an alternative, let us know, as in the current scenario many Nvidia users won't be able to use wayland unless they upgrade their hardware.

Lets stop playing dumb. Nvidia pushed for EGLStream against GBM for many years. They only changed their mind after completely failing to make it work. Simple as that.

I genuinely wasn't playing dumb - I hadn't a single clue to what you were referring (which is why I guessed three different scenarios). But sure, you meant the fact that Nvidia refused to implement a technology that Wayland relied on. That's... I mean, sure, that's really annoying. But maybe there's some responsibility on Wayland for relying on technology that wasn't present in all drivers? Actually, thinking back, wasn't the unrealistic position of Wayland, 8 years ago, the very reason that Canonical created Mir? One of the biggest reasons anyway, I think.

Let's just be happy that Nvidia have finally come around to supporting this requirement in their proprietary driver. More than ever, this whole story shows why open source drivers are so important. And tbh, I didn't really understand that until I went AMD a couple of years ago.


The situation indeed isn't as simple as "Nvidia evil vs good guy everyone else". Nvidia based its solution on a standard existing somewhere else (that did not pan out as expected) so they did not make a revolution in their own little world.
Once they saw it did not work for others, they proposed to work together on a standard that would be better than both current implementations.... But no one really worked with them. They waited a while and finally fell back on GBM.
Now, were they wrong fro EGLStream at the very beginning? that's a complicated thing to say. It's easy to say now that it lacks some features and co, but at the time nothing was working on wayland, so very hard to evaluate from their perspective.
Also, they did try to create a better standard with the community, but only got the cold shoulder. Which to be fair might be due to them being perceived as divas and leeches. Which might not be really justified, but it can be understood from other driver dev perspective.

As for the issue of legacy cards, kepler is real old, dating from May 30th, 2013 for the gtx 770. Having support forever on hw is not realistic, and is never happening. It only lasts as long as it makes sense commercially. Also, it is not as if they were flat out dropped in the mud, they only will not get wayland support. X will still be there for quite a few years before it gets fully dropped and thoses cards become e-waste. By the time, they will be way north of 10 years old ...
aufkrawall 27 Oct
Yet 780 Ti (fall 2013 650€) is still ~RX 480 performance (at least when VRAM pressure or explicit APIs don't kill it) and old hardware is supported ~forever in Mesa and kernel. It's unfortunate.
wolfyrion 27 Oct
Wayland has a lot of problems and even with AMD Graphic cards I am not able to use it.

If you have one monitor is ok to use Wayland but if you have 4x monitors then is a total chaos.

For example You are not able to set a Monitor as your primary monitor.
omer666 27 Oct
Quoting: 3zekielThe situation indeed isn't as simple as "Nvidia evil vs good guy everyone else". Nvidia based its solution on a standard existing somewhere else (that did not pan out as expected) so they did not make a revolution in their own little world.
Actually Nvidia didn't even bother discussing the matter when the other vendors were making the choice, and decided to go for EGLStream all alone.

Then, they wanted to discuss how EGLStreams was supposed to be technically better, which lasted for quite a few years.

Then, they wanted to develop a new API, they wrote some code and put it on github, and is never went any further.

Then, when RedHat pushed for EGLStream compatibility in Fedora, it was mainlined in mutter but Nvidia was still not compatible with XWayland.

Fast forward 2021, Nvidia patches XWayland, only to give up a few months later and make their driver work with GBM.

Literally, they've been messing around for 5 years for nothing. The only visible effect of this is the harm they made to Wayland adoption and innovation on Linux at large.

Some sources:
Nvidia presenting EGLStreams in 2014
Nvidia wanting a new API
Nivida's Unix Memory Allocator on Github (last updated 4 years ago)
literally revived my old 780 last night by baking it. so the dropped support is kind of disappointing if I plan to use it for anything.
slaapliedje 27 Oct
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Quoting: BielFPsAnd I would like to welcome the Nvidia users friends to the wayland side of the force

I hope now the Linux Mint devs can stop pretending that Wayland is not a thing.
On FreeBSD 13, if you install it on a system with an Nvidia card, it still defaults to Wayland, but it just crashes when you try to log into KDE (can't remember if Gnome did it too), you have to switch to Xorg then it works fine. Weirdest thing as I'd think sddm wouldn't work as well, but it works fine..
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