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Christian F.K. Schaller: Cool happenings in Fedora Workstation land

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Red Hat

Been some time since my last update, so I felt it was time to flex my blog writing muscles again and provide some updates of some of the things we are working on in Fedora in preparation for Fedora Workstation 35. This is not meant to be a comprehensive whats new article about Fedora Workstation 35, more of a listing of some of the things we are doing as part of the Red Hat desktop team.

NVidia support for Wayland
One thing we spent a lot of effort on for a long time now is getting full support for the NVidia binary driver under Wayland. It has been a recurring topic in our bi-weekly calls with the NVidia engineering team ever since we started looking at moving to Wayland. There has been basic binary driver support for some time, meaning you could run a native Wayland session on top of the binary driver, but the critical missing piece was that you could not get support for accelerated graphics when running applications through XWayland, our compatibility layer. Which basically meant that any application requiring 3D support and which wasn’t a native Wayland application yet wouldn’t work. So over the last Months we been having a great collaboration with NVidia around closing this gap, with them working closely with us in fixing issues in their driver while we have been fixing bugs and missing pieces in the rest of the stack. We been reporting and discussing issues back and forth allowing us a very quickly turnaround on issues as we find them which of course all resulted in the NVidia 470.42.01 driver with XWayland support. I am sure we will find new corner cases that needs to be resolved in the coming Months, but I am equally sure we will be able to quickly resolve them due to the close collaboration we have now established with NVidia. And I know some people will wonder why we spent so much time working with NVidia around their binary driver, but the reality is that NVidia is the market leader, especially in the professional Linux workstation space, and there are lot of people who either would end up not using Linux or using Linux with X without it, including a lot of Red Hat customers and Fedora users. And that is what I and my team are here for at the end of the day, to make sure Red Hat customers are able to get their job done using their Linux systems.

Lightweight kiosk mode
One of the wonderful things about open source is the constant flow of code and innovation between all the different parts of the ecosystem. For instance one thing we on the RHEL side have often been asked about over the last few years is a lightweight and simple to use solution for people wanting to run single application setups, like information boards, ATM machines, cash registers, information kiosks and so on. For many use cases people felt that running a full GNOME 3 desktop underneath their application was either to resource hungry and or created a risk that people accidentally end up in the desktop session. At the same time from our viewpoint as a development team we didn’t want a completely separate stack for this use case as that would just increase our maintenance burden as we would end up having to do a lot of things twice. So to solve this problem Ray Strode spent some time writing what we call GNOME Kiosk mode which makes setting up a simple session running single application easy and without running things like the GNOME shell, tracker, evolution etc. This gives you a window manager with full support for the latest technologies such as compositing, libinput and Wayland, but coming in at about 18MB, which is about 71MB less than a minimal GNOME 3 desktop session. You can read more about the new Kiosk mode and how to use it in this great blog post from our savvy Edge Computing Product Manager Ben Breard. The kiosk mode session described in Ben’s article about RHEL will be available with Fedora Workstation 35.

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