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Groups > linux.debian.kernel > #69592

Bug#983255: firmware-realtek: Direct firmware load for rtw88/rtw8821c_fw.bin failed with error -2

Cross-posted to 2 groups.

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Package: firmware-realtek
Version: 20210208-1
Severity: normal

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?

security update, on linux backports kernel (upgrade from 5.9 to 5.10) 

   * What exactly did you do (or not do) that was effective (or
     ineffective)?

apt update && apt upgrade && reboot 

   * What was the outcome of this action?

wlan adapter was not available after reboot

dmesg has these lines: 
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. 


   * What outcome did you expect instead?

wlan working as before. 


*** End of the template - remove these template lines ***


-- System Information:
Debian Release: 10.8
  APT prefers stable
  APT policy: (990, 'stable'), (500, 'stable-updates')
Architecture: amd64 (x86_64)

Kernel: Linux 5.10.0-0.bpo.3-amd64 (SMP w/4 CPU cores)
Kernel taint flags: TAINT_WARN
Locale: LANG=de_AT.UTF-8, LC_CTYPE=de_AT.UTF-8 (charmap=UTF-8), LANGUAGE=de_AT:de (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

firmware-realtek depends on no packages.

firmware-realtek recommends no packages.

Versions of packages firmware-realtek suggests:
ii  initramfs-tools  0.133+deb10u1

-- no debconf information

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Bug#983255: firmware-realtek: Direct firmware load for rtw88/rtw8821c_fw.bin failed with error -2 Alois Schlögl <alois.schloegl@gmail.com> - 2021-02-21 16:50 +0100
  Bug#983255: firmware-realtek: Direct firmware load for rtw88/rtw8821c_fw.bin failed with error -2 maximilian attems <maks@stro.at> - 2021-02-23 09:30 +0100
    Bug#983255: firmware-realtek: Direct firmware load for rtw88/rtw8821c_fw.bin failed with error -2 maximilian attems <maks@stro.at> - 2021-03-14 09:30 +0100
  Bug#983255: marked as done (firmware-realtek: Direct firmware  load for rtw88/rtw8821c_fw.bin failed with error -2) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2021-03-16 18:40 +0100

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