Issue arises when loading a firmware later than iwlwifi-cc-a0-55.ucode. Tested with v59, 62, 63.
Removing all subsequent firmware versions from /usr/lib/firmware forces iwlwifi to load v55 and WiFi works as expected. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1956964 Title: iwlwifi connection drops using AX200 Status in linux package in Ubuntu: Confirmed Bug description: I get occasional (sometimes once per hour, sometimes more often) connection drops on my Thinkpad T14s Gen 1 (which uses an Intel AX 200 chipset). dmesg reports a microcode SW error and seems to restart the adapter. I recently moved, so I'm not sure if it's caused by the environment or an update. I'm using a Fritzbox 7530 AX router and got an older model (7490) and another Thinkpad (T450s) with an intel chipset available for testing if necessary. ProblemType: Bug DistroRelease: Ubuntu 21.10 Package: linux-image-5.13.0-23-generic 5.13.0-23.23 ProcVersionSignature: Ubuntu 5.13.0-23.23-generic 5.13.19 Uname: Linux 5.13.0-23-generic x86_64 ApportVersion: 2.20.11-0ubuntu71 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: jonas 2455 F.... pulseaudio /dev/snd/controlC1: jonas 2455 F.... pulseaudio /dev/snd/controlC3: jonas 2455 F.... pulseaudio /dev/snd/controlC0: jonas 2455 F.... pulseaudio CasperMD5CheckResult: unknown CurrentDesktop: i3 Date: Mon Jan 10 13:50:22 2022 InstallationDate: Installed on 2021-01-22 (352 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) MachineType: LENOVO 20UH001QGE ProcFB: 0 amdgpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.13.0-23-generic root=/dev/mapper/vgubuntu-root ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.13.0-23-generic N/A linux-backports-modules-5.13.0-23-generic N/A linux-firmware 1.201.3 SourcePackage: linux UpgradeStatus: Upgraded to impish on 2021-11-29 (41 days ago) dmi.bios.date: 11/30/2020 dmi.bios.release: 1.29 dmi.bios.vendor: LENOVO dmi.bios.version: R1CET60W(1.29 ) dmi.board.asset.tag: Not Available dmi.board.name: 20UH001QGE dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.ec.firmware.release: 1.29 dmi.modalias: dmi:bvnLENOVO:bvrR1CET60W(1.29):bd11/30/2020:br1.29:efr1.29:svnLENOVO:pn20UH001QGE:pvrThinkPadT14sGen1:rvnLENOVO:rn20UH001QGE:rvrNotDefined:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_20UH_BU_Think_FM_ThinkPadT14sGen1: dmi.product.family: ThinkPad T14s Gen 1 dmi.product.name: 20UH001QGE dmi.product.sku: LENOVO_MT_20UH_BU_Think_FM_ThinkPad T14s Gen 1 dmi.product.version: ThinkPad T14s Gen 1 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1956964/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
