Hi, I saw the bug that you reported in Debian wireless-regdb: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=970679 . I am aware of a regression in kernel 5.6 (not yet fixed as of 5.9) which produces the exact symptom you described - impossibility to use AP mode on any 5GHz channel, due to country/regulatory issues. However the wireless-regdb package is not directly involved in the issue I'm talking about (as I understand it), so rebooting into a 4.x series kernel should immediately fix it (at least, on my Turris Omnia, it does). Therefore it might or might not be your same issue. A non-exhaustive list of references: https://patchwork.kernel.org/project/ath10k/patch/20200527165718.129307-1-briannor...@chromium.org/ https://www.mail-archive.com/ath10k@lists.infradead.org/msg12598.html https://bbs.archlinux.org/viewtopic.php?id=254535 Culprit commit: https://github.com/torvalds/linux/commit/2dc016599cfa9672a147528ca26d70c3654a5423
I'm just trying to spare you the many many hours of debugging that I spent before finding that out :) Best regards, Massimo Maggi
