Reproducible by at least 2 people, as reported here: https://bugzilla.kernel.org/show_bug.cgi?id=215496 and here: https://github.com/lwfinger/rtw88/issues/61 When laptop charger is not connected, dmesg is flooded with errors from realtek driver Dmesg log init: [ 3.516129] rtw_8822ce 0000:04:00.0: enabling device (0000 -> 0003) [ 3.523097] rtw_8822ce 0000:04:00.0: Firmware version 9.9.4, H2C version 15 [ 3.530951] rtw_8822ce 0000:04:00.0: Firmware version 9.9.10, H2C version 15 [ 3.999011] rtw_8822ce 0000:04:00.0 wlp4s0: renamed from wlan0 [ 5.324088] rtw_8822ce 0000:04:00.0: start vif dc:e9:94:7e:5f:85 on port 0 [ 5.325431] rtw_8822ce 0000:04:00.0: stop vif dc:e9:94:7e:5f:85 on port 0 [ 5.561473] rtw_8822ce 0000:04:00.0: start vif ee:c7:7c:0e:6b:3c on port 0 [ 9.847260] rtw_8822ce 0000:04:00.0: stop vif ee:c7:7c:0e:6b:3c on port 0 [ 10.085443] rtw_8822ce 0000:04:00.0: start vif dc:e9:94:7e:5f:85 on port 0 [ 14.738024] rtw_8822ce 0000:04:00.0: sta 10:fe:ed:51:2a:94 joined with macid 0 Repeated messages are: [ 49.030634] rtw_8822ce 0000:04:00.0: firmware failed to leave lps state [ 49.033828] rtw_8822ce 0000:04:00.0: failed to send h2c command [ 49.036994] rtw_8822ce 0000:04:00.0: failed to send h2c command 1) I connected the charger. The "firmware failed to leave lps state" message stopped to appear, but the "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 a few minutes messages started to come in again. lspci: 04:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8822CE 802.11ac PCIe Wireless Network Adapter Subsystem: Lenovo Device c123 Flags: bus master, fast devsel, latency 0, IRQ 79, IOMMU group 12 I/O ports at 2000 [size=256] Memory at c3600000 (64-bit, non-prefetchable) [size=64K] Capabilities: [40] Power Management version 3 Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [70] Express Endpoint, MSI 00 Capabilities: [100] Advanced Error Reporting Capabilities: [148] Device Serial Number 00-e0-4c-ff-fe-c8-22-01 Capabilities: [158] Latency Tolerance Reporting Capabilities: [160] L1 PM Substates Kernel driver in use: rtw_8822ce Kernel modules: rtw88_8822ce
