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The system has no WiFi hardware. Bluetooth as well as btusb are blacklisted. It runs kernel 6.7.0-arch3-1.
Despite that the dmesg boot message outputs annoying cfg80211 (used by all modern wireless drivers in Linux):
cfg80211: Loading compiled-in X.509 certificates for regulatory database
...
platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
cfg80211: failed to load regulatory.db
First sign of the messages is after dmesg lines:
708-[ 3.732824] e1000e 0000:00:19.0 eno1: renamed from eth0
709-[ 4.023653] intel_rapl_common: Found RAPL domain package
710-[ 4.023659] intel_rapl_common: Found RAPL domain core
711-[ 4.023661] intel_rapl_common: Found RAPL domain uncore
712-[ 4.023663] intel_rapl_common: Found RAPL domain dram
713-[ 4.184270] 8021q: 802.1Q VLAN Support v1.8
Lspci -k:
00:00.0 Host bridge: Intel Corporation Haswell-ULT DRAM Controller (rev 09)
Subsystem: Intel Corporation Haswell-ULT DRAM Controller
Kernel driver in use: hsw_uncore
00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 09)
DeviceName: CPU1
Subsystem: Intel Corporation Haswell-ULT Integrated Graphics Controller
Kernel modules: i915
00:03.0 Audio device: Intel Corporation Haswell-ULT HD Audio Controller (rev 09)
Subsystem: Intel Corporation Haswell-ULT HD Audio Controller
Kernel modules: snd_hda_intel
00:14.0 USB controller: Intel Corporation 8 Series USB xHCI HC (rev 04)
Subsystem: Intel Corporation 8 Series USB xHCI HC
Kernel driver in use: xhci_hcd
Kernel modules: xhci_pci
00:16.0 Communication controller: Intel Corporation 8 Series HECI #0 (rev 04)
Subsystem: Intel Corporation 8 Series HECI
Kernel driver in use: mei_me
Kernel modules: mei_me
00:19.0 Ethernet controller: Intel Corporation Ethernet Connection I218-V (rev 04)
DeviceName: ILAN
Subsystem: Intel Corporation Ethernet Connection I218-V
Kernel driver in use: e1000e
Kernel modules: e1000e
00:1d.0 USB controller: Intel Corporation 8 Series USB EHCI #1 (rev 04)
Subsystem: Intel Corporation 8 Series USB EHCI
Kernel driver in use: ehci-pci
00:1f.0 ISA bridge: Intel Corporation 8 Series LPC Controller (rev 04)
Subsystem: Intel Corporation 8 Series LPC Controller
Kernel driver in use: lpc_ich
Kernel modules: lpc_ich
00:1f.2 SATA controller: Intel Corporation 8 Series SATA Controller 1 [AHCI mode] (rev 04)
Subsystem: Intel Corporation 8 Series SATA Controller 1 [AHCI mode]
Kernel driver in use: ahci
00:1f.3 SMBus: Intel Corporation 8 Series SMBus Controller (rev 04)
Subsystem: Intel Corporation 8 Series SMBus Controller
Kernel driver in use: i801_smbus
Kernel modules: i2c_i801
There is no WiFi or bluetooth here, thus I think there is no need for loading cfg80211.
How to best disable/blacklist cfg80211 and/or all modern Wireless drivers?
Last edited by probackup-nl (2024-01-18 14:46:49)
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What is the output of
$ lsmod | grep cfg80211
?
Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.
(A works at time B) && (time C > time B ) ≠ (A works at time C)
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What is the output of lsmod | grep cfg80211 ?
The output is:
cfg80211 1339392 0
rfkill 40960 2 cfg80211
Might be related to mkinitcpio detecting wmi:
mkinitcpio -M | grep wmi
wmi
wmi_bmof
For now these blacklists have been added in this order after "bluetooth" and "btusb":
blacklist rfkill
blacklist cfg80211
That stops the cfg80211 messages in dmesg output.
As part of package "util-linux", I don't see a neat way to uninstall/remove rfkill.
Last edited by probackup-nl (2024-01-18 12:40:26)
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NoExtract, but the userspace tool hanging out on your disk doesn't really do anything in and by itself.
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