So, it has been a while, here a little update. As I couldn't figure out - and didn't have the time to do so - how to compile Fedora's kernel sources with their config through make bindeb-pkg, I didn't even bother trying with Ubuntu's kernel. I have now used the Fedora 41 live USB for the past two weekends and the most part of the past week, yet the issue didn't show up once. And since I very much doubt that to be a coincidence and the issue just fixed itself, the issue must be located in some place inside what Trixie has been shipping for roughly the last 6 months (I first reported this in early January to the Framework community, but that's just when it became frequent enough and had been around already for at least a month if not more, I'd say.
The only additional information I can provide at this point is logs I gathered with a script the Framework support gave me [1] that I sent them for analysis. But I'm not convinced they'll show anything of importance, as otherwise the FW guys could have already spotted it. But if anyone has any additional ideas on how to figure out the cause, do let me know. Best Richard [1]: https://raw.githubusercontent.com/FrameworkComputer/linux-docs/main/log-helper/combined.sh
