|Summary:||RTL8821CE: rfe 4 isn't supported|
|Product:||Drivers||Reporter:||Jian-Hong Pan (jhp)|
|Attachments:||Full dmesg log|
Description Jian-Hong Pan 2021-03-25 08:56:06 UTC
Created attachment 296053 [details] Full dmesg log We have a laptop equipped with AMD A4-9125 and Realtek RTL8821CE 802.11ac PCIe Wireless Network Adapter. I have tested with latest mainline kernel and the linux-firmware. The WiFi is always failed with the error message: [ 8.694896] rtw_8821ce 0000:02:00.0: enabling device (0000 -> 0003) [ 8.808629] rtw_8821ce 0000:02:00.0: Firmware version 24.8.0, H2C version 12 [ 8.830737] rtw_8821ce 0000:02:00.0: rfe 4 isn't supported [ 8.830881] rtw_8821ce 0000:02:00.0: failed to setup chip efuse info [ 8.830884] rtw_8821ce 0000:02:00.0: failed to setup chip information
Comment 1 Jian-Hong Pan 2021-03-25 08:59:46 UTC
Forgot to mention the tested kernel version which is latest mainline kernel 5.12-rc4+.
Comment 2 Jian-Hong Pan 2021-03-25 09:09:06 UTC
Here is the Realtek wireless PCI device's information: 02:00.0 Network controller : Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter [10ec:c821] Subsystem: AzureWave RTL8821CE 802.11ac PCIe Wireless Network Adapter [1a3b:3040] Flags: fast devsel, IRQ 42 I/O ports at e000 [size=256] Memory at fe900000 (64-bit, non-prefetchable) [size=64K] Capabilities:  Power Management version 3 Capabilities:  MSI: Enable- Count=1/1 Maskable- 64bit+ Capabilities:  Express Endpoint, MSI 00 Capabilities:  Advanced Error Reporting Capabilities:  Device Serial Number 00-e0-4c-ff-fe-c8-21-01 Capabilities:  Latency Tolerance Reporting Capabilities:  L1 PM Substates Capabilities:  Precision Time Measurement Capabilities: [17c] Vendor Specific Information: ID=0003 Rev=1 Len=054 <?> Kernel modules: rtw88_8821ce
Comment 3 fordfrog 2021-07-24 09:36:33 UTC
i have exactly the same chip and exactly the same issue. currently on kernel 5.13.4. i'd be glad to help if i could (patching, testing, reporting back...).
Comment 4 Jian-Hong Pan 2021-12-06 09:14:09 UTC
The the RTL8821CE chip is recognized since kernel 5.16-rc3. However, it produces another bug mentioned in https://bugzilla.kernel.org/show_bug.cgi?id=215239
Comment 5 Jian-Hong Pan 2021-12-06 09:15:48 UTC
(In reply to Jian-Hong Pan from comment #4) > The the RTL8821CE chip is recognized since kernel 5.16-rc3. I found it is related these two commits: 5db4943a9d6f rtw88: 8821c: correct 2.4G tx power for type 2/4 NIC b789e3fe7047 rtw88: 8821c: support RFE type4 wifi NIC