Make sure you have the latest firmware for your motherboard. This sounds like unstable voltages for memory, or an overly-aggressive PBO curve. Did you try disabling the XMP profile on the RAM, disabling PBO, and upping the voltages (within safe limits) of the SOC, DDR, and VDDP? You might find some useful info here[0] or here[1] if you intend to run your memory at 3200 MHz.
The GTK4 project was cancelled for multiple reasons. We originally began working on Relm4 to use GTK4 for COSMIC applets. While others on the team were also experimenting with alternative Rust GUI libraries.
It required a lot of effort to patch GTK4 to support the Wayland layer shell protocol. Getting those patches merged into GTK4 was also taking a much longer time. There were long delays between code reviews; and they also wanted a series of much larger refactoring changes to be made to GTK4 before exposing the layer shell feature. It was much easier to get layer-shell working with iced, as it is a much leaner and concise code base.
GTK does not support fractional scaling, which is something we want our applets to support on day one. This was one of our major concerns. A concern that didn’t apply to iced.
It was also exceedingly difficult to create custom widgets with GTK in Rust. Even those of us with years of experience considered it to be unreasonably difficult. So it was not feasible to expect new hires on the team to be able to comfortably develop COSMIC components with it. In comparison, our team was able to develop custom widgets with iced with much less effort and with greater flexibility, so the demand for iced grew stronger.
At the end of the day, GTK is not a Rust toolkit, and its API is cumbersome to adapt to Rust. Use of GTK would always be a compromise that lessens the developer experience for COSMIC app and applet development. A compromise that would eventually require us to rewrite everything in a native Rust GUI library the moment it would become possible to do so.
Since we are developing a desktop environment from the ground up anyway, we decided that there would be much more value for our time if we contribute to the Rust ecosystem and utilize iced to make a fully featured GUI library for application development.
It would certainly be easier for them to port COSMIC because there are very few dependencies on shared C libraries. Cargo links all Rust libraries statically, so it’s easier to maintain and update components. This will depend how open they are to accepting Cargo and Rust into their ecosystems.
The keyword is alternative. All first party applications are written natively with our libcosmic toolkit, which is based on iced-rs. We are using a fork of iced though because we needed to implement a custom runtime with the sctk (smithay client toolkit) for COSMIC applet development, but our desktop applications will use the original winit runtime.
That would compromise our vision of a GUI platform built from the ground up in Rust. It would also not be feasible to use Flutter for applet development. We can easily make modifications directly to iced for all the Wayland integrations that we need in COSMIC, as the iced code base is very lean, and written in Rust.
I don’t think you can say that because we haven’t published our design language yet. Only a handful of design mockups have been published so far. The screenshots here are not design mockups but a work in progress implementation. Hence the “In-progress” part of the title.
Rounded corners are a user preference in the Appearance page in COSMIC Settings.
Sounds like voltage droop and/or a motherboard with faulty automatic “training” settings. I don’t recall if the Ryzen 3000 had custom PBO curves, but tweaking this can fix it. Upping LLC and the SOC and CPU voltage slightly alternatively could help. Though I’ve had my most stable overclock by disabling PBO entirely and using a manual CPU multiplier.
You can generate documentation by running cargo doc and browsing the generated web pages in target/doc. There are also examples in the examples directory of libcosmic, as well as a design demo example which is a WIP.
libcosmic is an alternative toolkit for building desktop applications and layer shell applets. It wouldn’t make much sense to build a toolkit only for ourselves. It’s the best way to develop layer shell applets for COSMIC, and other Wayland compositors that support the layer shell protocol.