> lspci | grep -i wire > 02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter > > dmesg contains these lines: > > [ 4.938468] rtw_8821ce 0000:02:00.0: Direct firmware load for rtw88/rtw8821c_fw.bin failed with error -2 > [ 4.938472] rtw_8821ce 0000:02:00.0: failed to request firmware > [ 4.938543] rtw_8821ce 0000:02:00.0: failed to load firmware > [ 4.938571] rtw_8821ce 0000:02:00.0: failed to setup chip efuse info > [ 4.938599] rtw_8821ce 0000:02:00.0: failed to setup chip information > [ 4.939514] rtw_8821ce: probe of 0000:02:00.0 failed with error -22 > > tried to install also latest firmware-realtek from unstable > ii firmware-realtek 20210208-1 all Binary firmware for Realtek wired/wifi/BT adapters > but this did also not change anything. there is a newer version of this firmware v9.9.5 in the upstream repository, could you test commit 80cb579614ee576ae74e650fa0b43d9f7c212039 in linux-firmware git: https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git It only says "Refine firmware to improve performance." so if it still does not work upstream realtek should be informed. > * What outcome did you expect instead? > > wlan working as before. > > Thank you for your report.
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