Hi Slavi, Thank you for reporting this issue. I will look into what went wrong. Best Regards, Yen. -----Original Message----- From: Slavi Pantaleev <slavi@xxxxxxxxxxx> Sent: Monday, February 10, 2025 10:56 PM To: Felix Fietkau <nbd@xxxxxxxx>; Lorenzo Bianconi <lorenzo@xxxxxxxxxx>; Ryder Lee <Ryder.Lee@xxxxxxxxxxxx>; Kalle Valo <kvalo@xxxxxxxxxx>; Matthias Brugger <matthias.bgg@xxxxxxxxx>; AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>; Mingyen Hsieh (謝明諺) <Mingyen.Hsieh@xxxxxxxxxxxx>; Deren Wu (武德仁) <Deren.Wu@xxxxxxxxxxxx>; linux-wireless@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; linux-mediatek@xxxxxxxxxxxxxxxxxxx Subject: 6 Ghz frequencies always listed as disabled in newer kernels with Mediatek MT7921K (RZ608) External email : Please do not click links or open attachments until you have verified the sender or the content. Hello! This is in regard to Bugzilla Bug 218731 - Tri-band AMD RZ608 (MediaTek MT7921K) has 6GHz band disabled in kernel 6.7+ despite working in <=6.6 URL: https://urldefense.com/v3/__https://bugzilla.kernel.org/show_bug.cgi?id=218731__;!!CTRNKA9wMg0ARbw!hwgyrPE5EUmlhv276MLdhh3io-OmXeYvNMVGUpAUbJ7wgc9z8WI4fZoD0Ze1WlIlqf_1qrieE1unap_P8_E$ I'm in Bulgaria and `iw reg get` reports this: ``` global country BG: DFS-ETSI (2400 - 2483 @ 40), (N/A, 20), (N/A) (5150 - 5250 @ 80), (N/A, 23), (N/A), NO-OUTDOOR, AUTO-BW (5250 - 5350 @ 80), (N/A, 20), (0 ms), NO-OUTDOOR, DFS, AUTO-BW (5470 - 5725 @ 160), (N/A, 26), (0 ms), DFS (5725 - 5875 @ 80), (N/A, 13), (N/A) (5945 - 6425 @ 160), (N/A, 23), (N/A), NO-OUTDOOR (57000 - 66000 @ 2160), (N/A, 40), (N/A) ``` For testing purposes, I've also tried switching to another regulatory domain (`US`, `DE`, `SE`, `NL`) via `iw reg set ..`. Regardless of the regulatory domain, `iw list | grep -A 15 Frequencies` always reports the 6 Ghz frequencies as disabled on newer kernels. As the original bug reporter has discovered, the regression begins to appear in kernel 6.7.0 while it isn't present in 6.6.30. I've done a bisection and the results are like this: 1. [bad] mainline (954a209f431c06b62718a49b403bd4c549f0d6fb) 2. [good] v6.6.30 3. [bad] v6.7.12 4. [good] v6.6 5. [bad] edd8e84ae9514e93368f56c3715b11af52df6c3b 6. [bad] 89ed67ef126c4160349c1b96fdb775ea6170ac90 7. [good] b827ac419721a106ae2fccaa40576b0594edad92 8. [bad] d1a02ed66fe62aa2edd77bd54e270ebc33bd12ff 9. [good] 3abbd0699b678fc48e0100704338cff9180fe4bb 10. [good] 5a423552e0d9bb882f22cb0bf85f520ca2692706 11. [bad] 56a7bb12c78ffa1b02e154b1d779ed2a1555fa3c 12. [good] a3c2dd96487f1dd734c9443a3472c8dafa689813 13. [bad] 089482a06b74a40d45773b1871182e8f04be026b 14. [good] fce9c967820a72f600abbf061d7077861685a14d 15. [good] c948b5da6bbec742b433138e3e3f9537a85af2e5 16. [good] 9585316a2aaf773a67846bdc8bbdd4df1e9622fa 17. [good] 51ba0e3a15eb1643116a93674e230e11b9499592 18. [bad] 09382d8f8641bc12fffc41a93eb9b37be0e653c0 19. [good] 4fc8df50fd41c2762d893211487be0ecb24c6a05 09382d8f8641bc12fffc41a93eb9b37be0e653c0 is reported as the first bad commit. URL: https://urldefense.com/v3/__https://kernel.googlesource.com/pub/scm/linux/kernel/git/stable/linux/*/09382d8f8641bc12fffc41a93eb9b37be0e653c0__;Kw!!CTRNKA9wMg0ARbw!hwgyrPE5EUmlhv276MLdhh3io-OmXeYvNMVGUpAUbJ7wgc9z8WI4fZoD0Ze1WlIlqf_1qrieE1unR0MDLCs$ Regards
