Hello Steve, Do you notice any decrease in wifi performance when you see these 'failed to send h2c command' messages?
I noticed in your dmesg file you also see 'firmware failed to leave lps state' around the same time you see the h2c message - this led me to this coversation (https://github.com/lwfinger/rtw88/issues/61). Does this issue seem similar to yours? This may mean the issue is related to power saving. If you feel like your issue is similar to this please verify some behavior by following these steps from the thread: Update: the message flood only happens when laptop charger is not connected. 1) I connected the charger. The "firmware failed to leave lps state" message stopped to appear, but "failed to send h2c command" message still continuously flooded my dmesg 2) I put laptop to sleep, then wake up. Message flood stopped. 3) I disconnected the charger, and after few minutes message started to come in again. Thanks -- Bethany ** Bug watch added: github.com/lwfinger/rtw88/issues #61 https://github.com/lwfinger/rtw88/issues/61 -- 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/2077217 Title: rtw_8821ce: failed to send h2c command Status in linux package in Ubuntu: New Bug description: 16 Aug 16:40:51 kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command 16 Aug 16:40:51 kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command 16 Aug 16:40:43 kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command 16 Aug 16:38:39 kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command 16 Aug 16:36:35 kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command 16 Aug 16:35:18 kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command 16 Aug 16:34:19 kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command I keep getting loads of these messages on the current kernel: 6.8.0-40-generic I do not get them in the previous one: 6.8.0-39-generic ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: linux-image-6.8.0-40-generic 6.8.0-40.40 ProcVersionSignature: Ubuntu 6.8.0-40.40-generic 6.8.12 Uname: Linux 6.8.0-40-generic x86_64 ApportVersion: 2.28.1-0ubuntu3.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/seq: tigger 2097 F.... pipewire /dev/snd/controlC0: tigger 2101 F.... wireplumber CRDA: N/A CasperMD5CheckResult: pass CurrentDesktop: KDE Date: Sat Aug 17 07:41:10 2024 InstallationDate: Installed on 2024-01-12 (218 days ago) InstallationMedia: Ubuntu 23.10.1 "Mantic Minotaur" - Release amd64 (20231016.1) Lsusb: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 002: ID 05c8:03ba Cheng Uei Precision Industry Co., Ltd (Foxlink) HP TrueVision HD Camera Bus 001 Device 003: ID 0bda:b00a Realtek Semiconductor Corp. Realtek Bluetooth 4.2 Adapter Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub MachineType: HP HP Laptop 15-da0xxx ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.8.0-40-generic root=UUID=cc50af48-b63b-4766-a227-126e236350aa ro quiet splash vt.handoff=7 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-6.8.0-40-generic N/A linux-backports-modules-6.8.0-40-generic N/A linux-firmware 20240318.git3b128b60-0ubuntu2.1 SourcePackage: linux UpgradeStatus: Upgraded to noble on 2024-06-03 (75 days ago) dmi.bios.date: 11/16/2022 dmi.bios.release: 15.43 dmi.bios.vendor: Insyde dmi.bios.version: F.43 dmi.board.asset.tag: Type2 - Board Asset Tag dmi.board.name: 84A6 dmi.board.vendor: HP dmi.board.version: 80.50 dmi.chassis.asset.tag: Chassis Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: HP dmi.chassis.version: Chassis Version dmi.ec.firmware.release: 80.50 dmi.modalias: dmi:bvnInsyde:bvrF.43:bd11/16/2022:br15.43:efr80.50:svnHP:pnHPLaptop15-da0xxx:pvrType1ProductConfigId:rvnHP:rn84A6:rvr80.50:cvnHP:ct10:cvrChassisVersion:sku4BA34EA#ABU: dmi.product.family: 103C_5335KV HP Notebook dmi.product.name: HP Laptop 15-da0xxx dmi.product.sku: 4BA34EA#ABU dmi.product.version: Type1ProductConfigId dmi.sys.vendor: HP To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2077217/+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
