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Thank you for writing this down! A couple of R7800 owners are chasing down the cause of a serious instability behavior on some (not all) NSS enabled builds that are based on @ACwifidude ’s work. Specifically on the NSS builds based on kernel 5.10. We don’t know yet whether having NSS firmware active plays a major role in the instability some of us experience. But some are now trying to clamp down the CPU frequency to one setting and keep it there. As often, results vary, but going from random crashes after a few hours to an uptime of 5 days (and still counting) is a noticeable difference!

I’ve “summarized” my theory in a post in @ACwifidude’s build thread. Now, I believe when I read your discovery here that there really is an issue in frequency scaling and stability for (at least) the R7800 on kernel 5.10. But am I correct with my theory that this “bug” is new or more effective on kernel 5.10 and further, but had lesser impact on kernel 5.4?