#1114930 linux-image-6.12.43+deb13-amd64: Endless kernel error message about rtw_8821ce driver (kernel module rtw88_8821ce)

Package:
src:linux
Source:
src:linux
Submitter:
quarus
Date:
2025-09-17 10:29:02 UTC
Severity:
normal
#1114930#5
Date:
2025-09-11 17:40:57 UTC
From:
To:
Dear developer,
Initially, after a new installation of Debian-trixie, when powering the laptop from the network, I did not notice this problem.
It seemed to me that the problem appeared after the first transition of my laptop to battery power.


# journalctl -p 3 -b
сен 11 18:54:07 rex kernel: amdgpu 0000:04:00.0: amdgpu: Secure display: Generic Failure.
сен 11 18:54:07 rex kernel: amdgpu 0000:04:00.0: amdgpu: SECUREDISPLAY: query securedisplay TA failed. ret 0x0
сен 11 18:54:08 rex addgroup[832]: The group `hardinfo2' already exists.
сен 11 18:54:17 rex sddm-helper[1134]: gkr-pam: unable to locate daemon control file
сен 11 18:54:22 rex obexd[1731]: Unable to acquire registry: Error calling StartServiceByName for org.gnome.evolution.dataserver.Sources5: Unit evolution-source-registry.service not found.
сен 11 18:54:22 rex obexd[1731]: Unable to acquire registry: Error calling StartServiceByName for org.gnome.evolution.dataserver.Sources5: Unit evolution-source-registry.service not found.
сен 11 18:54:45 rex kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command
сен 11 18:54:57 rex kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command
сен 11 18:54:57 rex kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command
сен 11 18:54:59 rex kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command
сен 11 18:54:59 rex kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command
сен 11 18:55:14 rex kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command
сен 11 18:55:45 rex kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command
сен 11 18:56:16 rex kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command
сен 11 18:56:16 rex kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command
сен 11 18:56:16 rex kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command
сен 11 18:56:16 rex kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command
сен 11 18:56:16 rex kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command
сен 11 18:56:16 rex kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command
сен 11 18:56:16 rex kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command
сен 11 18:56:18 rex kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command
сен 11 18:56:18 rex kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command
сен 11 18:56:18 rex kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command
сен 11 18:56:18 rex kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command
...
сен 11 19:48:17 rex kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command
сен 11 19:48:19 rex kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command
сен 11 19:48:19 rex kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command
сен 11 19:48:19 rex kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command
сен 11 19:48:19 rex kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command
сен 11 19:48:19 rex kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command
сен 11 19:48:19 rex kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command
сен 11 19:48:19 rex kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command
сен 11 19:48:19 rex kernel: rtw_8821ce 0000:02:00.0: failed to send h2c command

The last line number of this error message is 11890



# lspci -k | grep 8821
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter
        DeviceName: Realtek Chopard RTL8821CE 802.11ac 1x1 +BT 4.2 M.2 2230 PCI-e+USB WW
        Kernel driver in use: rtw_8821ce
        Kernel modules: rtw88_8821ce
# modinfo rtw88_8821ce
filename:       /lib/modules/6.12.43+deb13-amd64/kernel/drivers/net/wireless/realtek/rtw88/rtw88_8821ce.ko.xz
license:        Dual BSD/GPL
description:    Realtek 802.11ac wireless 8821ce driver
author:         Realtek Corporation
alias:          pci:v000010ECd0000C821sv*sd*bc*sc*i*
alias:          pci:v000010ECd0000B821sv*sd*bc*sc*i*
depends:        rtw88_pci,rtw88_8821c
intree:         Y
name:           rtw88_8821ce
retpoline:      Y
vermagic:       6.12.43+deb13-amd64 SMP preempt mod_unload modversions
sig_id:         PKCS#7
signer:         Build time autogenerated kernel key
sig_key:        4C:03:63:16:8B:8C:F7:0B:6E:93:C5:FF:93:73:B4:34:6D:41:94:FA
sig_hashalgo:   sha256
signature:      30:66:02:31:00:B0:5B:35:78:D9:ED:1D:B8:66:BA:D4:9F:E2:2F:C0:
                C8:7D:C8:FD:D2:82:94:BC:16:9A:17:7C:9E:0C:D6:FF:DA:34:7D:00:
                00:A9:64:49:1E:CC:A9:A7:3D:5D:35:38:85:02:31:00:F9:30:79:70:
                45:69:87:A5:02:88:2D:5B:14:4B:FA:03:54:EF:90:7D:90:FB:9C:66:
                3E:CD:75:81:F7:BF:6C:85:AB:DA:CD:50:04:38:C4:8D:7A:F8:37:D7:
                C7:76:40:5F

# uname -a
Linux rex 6.12.43+deb13-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.43-1 (2025-08-27) x86_64 GNU/Linux
#1114930#10
Date:
2025-09-17 10:21:01 UTC
From:
To:
The problem disappeared after disabling the power saving mode of the
Wi-Fi adapter.
Example - in this article
<https://discussion.fedoraproject.org/t/tip-lower-wifi-latency-by-disabling-wifi-power-management/74534>:
https://discussion.fedoraproject.org/t/tip-lower-wifi-latency-by-disabling-wifi-power-management/74534

```bash
cat > /etc/NetworkManager/conf.d/wifi-powersave.conf <<EOF
#    0: use default value
#    1: do not change the current state
#    2: disable power saving
#    3: turn on power saving
#
[connection]
wifi.powersave = 2
EOF
```