[Bug 2160416] [NEW] Unable to connect to 6 GHz networks with MT7921K

Public bug reported: I am unable to use 6ghz WiFi with this chipset in Kubuntu 26.04. Only just noticed it because I upgraded my mesh WiFi at home to ASUS BT8, and my other devices work fine. Running "iw list" shows all 6ghz disabled. I tried forcing Swedish region with "sudo iw reg set SE" but no change. I found a bug report here, not sure if this is the same or not https://bugzilla.kernel.org/show_bug.cgi?id=218731 Happy to provide any additional information needed to help solve this. ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: linux-image-7.0.0-27-generic 7.0.0-27.27 ProcVersionSignature: Ubuntu 7.0.0-27.27-generic 7.0.6 Uname: Linux 7.0.0-27-generic x86_64 ApportVersion: 2.34.0-0ubuntu2 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: KDE Date: Sat Jul 11 12:43:37 2026 InstallationDate: Installed on 2023-01-16 (1272 days ago) InstallationMedia: Kubuntu 23.04 "Lunar Lobster" - Alpha amd64 (20230115) MachineType: ASRock B650E PG Riptide WiFi ProcFB: 0 amdgpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-27-generic root=UUID=5863f9c0-ef4f-497e-81f5-12268da1003b ro kvm.enable_virt_at_load=0 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. SourcePackage: linux UpgradeStatus: Upgraded to resolute on 2026-03-27 (106 days ago) dmi.bios.date: 04/16/2026 dmi.bios.release: 5.41 dmi.bios.vendor: American Megatrends International, LLC. dmi.bios.version: 4.20 dmi.board.asset.tag: Default string dmi.board.name: B650E PG Riptide WiFi dmi.board.vendor: ASRock dmi.board.version: Default string dmi.chassis.asset.tag: Default string dmi.chassis.type: 3 dmi.chassis.vendor: Default string dmi.chassis.version: Default string dmi.modalias: dmi:bvnAmericanMegatrendsInternational,LLC.:bvr4.20:bd04/16/2026:br5.41:svnASRock:pnB650EPGRiptideWiFi:pvrDefaultstring:rvnASRock:rnB650EPGRiptideWiFi:rvrDefaultstring:cvnDefaultstring:ct3:cvrDefaultstring:skuDefaultstring:pfaDefaultstring: dmi.product.family: Default string dmi.product.name: B650E PG Riptide WiFi dmi.product.sku: Default string dmi.product.version: Default string dmi.sys.vendor: ASRock ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug resolute wayland-session -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2160416 Title: Unable to connect to 6 GHz networks with MT7921K Status in linux package in Ubuntu: New Bug description: I am unable to use 6ghz WiFi with this chipset in Kubuntu 26.04. Only just noticed it because I upgraded my mesh WiFi at home to ASUS BT8, and my other devices work fine. Running "iw list" shows all 6ghz disabled. I tried forcing Swedish region with "sudo iw reg set SE" but no change. I found a bug report here, not sure if this is the same or not https://bugzilla.kernel.org/show_bug.cgi?id=218731 Happy to provide any additional information needed to help solve this. ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: linux-image-7.0.0-27-generic 7.0.0-27.27 ProcVersionSignature: Ubuntu 7.0.0-27.27-generic 7.0.6 Uname: Linux 7.0.0-27-generic x86_64 ApportVersion: 2.34.0-0ubuntu2 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: KDE Date: Sat Jul 11 12:43:37 2026 InstallationDate: Installed on 2023-01-16 (1272 days ago) InstallationMedia: Kubuntu 23.04 "Lunar Lobster" - Alpha amd64 (20230115) MachineType: ASRock B650E PG Riptide WiFi ProcFB: 0 amdgpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-27-generic root=UUID=5863f9c0-ef4f-497e-81f5-12268da1003b ro kvm.enable_virt_at_load=0 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. SourcePackage: linux UpgradeStatus: Upgraded to resolute on 2026-03-27 (106 days ago) dmi.bios.date: 04/16/2026 dmi.bios.release: 5.41 dmi.bios.vendor: American Megatrends International, LLC. dmi.bios.version: 4.20 dmi.board.asset.tag: Default string dmi.board.name: B650E PG Riptide WiFi dmi.board.vendor: ASRock dmi.board.version: Default string dmi.chassis.asset.tag: Default string dmi.chassis.type: 3 dmi.chassis.vendor: Default string dmi.chassis.version: Default string dmi.modalias: dmi:bvnAmericanMegatrendsInternational,LLC.:bvr4.20:bd04/16/2026:br5.41:svnASRock:pnB650EPGRiptideWiFi:pvrDefaultstring:rvnASRock:rnB650EPGRiptideWiFi:rvrDefaultstring:cvnDefaultstring:ct3:cvrDefaultstring:skuDefaultstring:pfaDefaultstring: dmi.product.family: Default string dmi.product.name: B650E PG Riptide WiFi dmi.product.sku: Default string dmi.product.version: Default string dmi.sys.vendor: ASRock To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2160416/+subscriptions