我正在尝试设置两台机器，两台机器的硬件相同，应该受较新的 Linux 内核支持。里面的无线网卡是 GIGABYTE“GC-WB867D-I”Wifi+蓝牙。开箱即用，蓝牙可以使用，但 Wifi 不能。
这内核版本通过：uname -r
5.0.0-31-generic
这固件版本通过：modinfo iwlwifi | grep 8265
firmware: iwlwifi-8265-36.ucode
固件文件代码通过：lsmod | grep iwlwifi
iwlwifi 315392 1 iwlmvm
这网络控制器通过：sudo lspci | grep Network
41:00.0 Network controller: Intel Corporation Wireless 8265 / 8275 (rev 78)
更多详细网络控制器通过ID：sudo lspci -vnd 8086:24fd
41:00.0 0280: 8086:24fd (rev 78) Subsystem: 8086:1010 Flags: bus master, fast devsel, latency 0, IRQ 139 Memory at fa400000 (64-bit, non-prefetchable) [size=8K] Capabilities: [c8] Power Management version 3 Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [40] Express Endpoint, MSI 00 Capabilities: [100] Advanced Error Reporting Capabilities: [140] Device Serial Number 48-89-e7-ff-ff-4b-c6-c0 Capabilities: [14c] Latency Tolerance Reporting Capabilities: [154] L1 PM Substates Kernel driver in use: iwlwifi Kernel modules: iwlwifi, wl
最后，最冗长的方式是通过调试脚本：wget -N -t 5 -T 10 https://github.com/UbuntuForums/wireless-info/raw/master/wireless-info && chmod +x wireless-info && ./wireless-info
文本文件摘录：
########## wireless info START ##########
Report from: 14 Oct 2019 20:53 PDT -0700
Booted last: 14 Oct 2019 00:00 PDT -0700
Script from: 22 Oct 2018 03:34 UTC +0000
##### release ###########################
Distributor ID: Ubuntu
Description: Ubuntu 18.04.3 LTS
Release: 18.04
Codename: bionic
##### kernel ############################
Linux 5.0.0-31-generic #33~18.04.1-Ubuntu SMP Tue Oct 1 10:20:39 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
Parameters: ro, quiet, splash
##### desktop ###########################
Ubuntu
##### lspci #############################
04:00.0 Ethernet controller [0200]: Intel Corporation I211 Gigabit Network Connection [8086:1539] (rev 03)
Subsystem: Gigabyte Technology Co., Ltd I211 Gigabit Network Connection [1458:e000]
Kernel driver in use: igb
41:00.0 Network controller [0280]: Intel Corporation Wireless 8265 / 8275 [8086:24fd] (rev 78)
Subsystem: Intel Corporation Dual Band Wireless-AC 8265 [8086:1010]
Kernel driver in use: iwlwifi
##### lsusb #############################
Bus 008 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 007 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 003: ID 05b8:3279 Agiler, Inc.
Bus 005 Device 002: ID 046d:c069 Logitech, Inc. M-U0007 [Corded Mouse M500]
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 005: ID 2357:0108
Bus 001 Device 003: ID 8087:0a2b Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
##### PCMCIA card info ##################
##### rfkill ############################
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
3: phy3: Wireless LAN
Soft blocked: no
Hard blocked: no
##### secure boot #######################
SecureBoot disabled
Platform is in Setup Mode
##### lsmod #############################
wl 6447104 0
iwlmvm 389120 0
rtl8xxxu 126976 0
mac80211 819200 2 iwlmvm,rtl8xxxu
iwlwifi 315392 1 iwlmvm
wmi_bmof 16384 0
mxm_wmi 16384 1 nouveau
cfg80211 679936 4 wl,iwlmvm,iwlwifi,mac80211
wmi 28672 3 wmi_bmof,mxm_wmi,nouveau
##### interfaces ########################
[/etc/network/interfaces]
auto lo
iface lo inet loopback
etc.... etc....
##### NetworkManager.state ##############
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
##### NetworkManager config #############
[[/etc/NetworkManager/conf.d/default-wifi-powersave-on.conf]]
[connection]
wifi.powersave = 3
[[/etc/NetworkManager/NetworkManager.conf]]
[main]
plugins=ifupdown,keyfile
[ifupdown]
managed=false
[device]
wifi.scan-rand-mac-address=no
[[/usr/lib/NetworkManager/conf.d/10-dns-resolved.conf]]
[main]
dns=systemd-resolved
[[/usr/lib/NetworkManager/conf.d/10-globally-managed-devices.conf]]
[keyfile]
unmanaged-devices=*,except:type:wifi,except:type:wwan
[[/usr/lib/NetworkManager/conf.d/20-connectivity-ubuntu.conf]]
[connectivity]
uri=http://connectivity-check.ubuntu.com/
[[/usr/lib/NetworkManager/conf.d/no-mac-addr-change.conf]]
[device-mac-addr-change-wifi]
match-device=driver:rtl8723bs,driver:rtl8189es,driver:r8188eu,driver:8188eu,driver:eagle_sdio,driver:wl
wifi.scan-rand-mac-address=no
wifi.cloned-mac-address=preserve
ethernet.cloned-mac-address=preserve
##### NetworkManager profiles ###########
##### Netplan config ####################
[/etc/netplan/01-network-manager-all.yaml]
network:
version: 2
renderer: NetworkManager
etc.... etc....
##### module parameters #################
[iwlmvm]
init_dbg: N
power_scheme: 2
tfd_q_hang_detect: Y
grep: /sys/module/rtl8xxxu/parameters/debug: Permission denied
grep: /sys/module/rtl8xxxu/parameters/dma_agg_pages: Permission denied
grep: /sys/module/rtl8xxxu/parameters/dma_aggregation: Permission denied
grep: /sys/module/rtl8xxxu/parameters/dma_agg_timeout: Permission denied
grep: /sys/module/rtl8xxxu/parameters/ht40_2g: Permission denied
[rtl8xxxu]
[mac80211]
beacon_loss_count: 7
ieee80211_default_rc_algo: minstrel_ht
max_nullfunc_tries: 2
max_probe_tries: 5
minstrel_vht_only: Y
probe_wait_ms: 500
[iwlwifi]
11n_disable: 0
amsdu_size: 0
antenna_coupling: 0
bt_coex_active: Y
d0i3_disable: Y
d0i3_timeout: 1000
disable_11ac: N
disable_11ax: N
enable_ini: N
fw_monitor: N
fw_restart: Y
lar_disable: N
led_mode: 0
nvm_file: (null)
power_level: 0
power_save: N
remove_when_gone: N
swcrypto: 0
uapsd_disable: 3
[cfg80211]
bss_entries_limit: 1000
cfg80211_disable_40mhz_24ghz: N
ieee80211_regdom: 00
~编辑~内核模块的加载。sudo modprobe iwlwifi && dmesg | grep iwl
[ 5.761509] iwlwifi 0000:41:00.0: enabling device (0000 -> 0002)
[ 5.765276] iwlwifi 0000:41:00.0: loaded firmware version 36.9f0a2d68.0 op_mode iwlmvm
[ 5.836664] iwlwifi 0000:41:00.0: Detected Intel(R) Dual Band Wireless AC 8265, REV=0x230
[ 5.843363] iwlwifi 0000:41:00.0: swiotlb buffer is full (sz: 4096 bytes)
[ 5.843367] iwlwifi 0000:41:00.0: overflow 0x0000001030d6f000+4096 of DMA mask fffffffff bus mask 0
[ 5.843377] Modules linked in: snd_pcm ucsi_ccg(+) wl(POE) aes_x86_64 snd_seq_midi crypto_simd snd_seq_midi_event iwlmvm(+) cryptd rtl8xxxu(+) glue_helper joydev input_leds typec_ucsi fjes(-) snd_rawmidi video typec mac80211 ttm iwlwifi drm_kms_helper snd_seq btusb wmi_bmof btrtl mxm_wmi btbcm snd_seq_device drm btintel snd_timer cfg80211 bluetooth fb_sys_fops snd syscopyarea sysfillrect ecdh_generic sysimgblt k10temp ccp(+) soundcore mac_hid sch_fq_codel parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid hid igb i2c_algo_bit nvme ahci dca i2c_piix4 nvme_core i2c_nvidia_gpu libahci gpio_amdpt wmi gpio_generic
[ 5.843419] iwl_pcie_rxq_alloc_rbs+0x164/0x1d0 [iwlwifi]
[ 5.843425] _iwl_pcie_rx_init+0x2bc/0x310 [iwlwifi]
[ 5.843431] iwl_pcie_rx_init+0x2d/0x400 [iwlwifi]
[ 5.843442] ? iwl_mvm_nic_config+0x118/0x170 [iwlmvm]
[ 5.843449] iwl_trans_pcie_start_fw+0x2a1/0x6d0 [iwlwifi]
[ 5.843459] ? iwl_init_notification_wait+0x6d/0xb0 [iwlwifi]
[ 5.843467] iwl_mvm_load_ucode_wait_alive+0x102/0x310 [iwlmvm]
[ 5.843476] iwl_run_init_mvm_ucode+0x88/0x340 [iwlmvm]
[ 5.843483] ? iwl_run_init_mvm_ucode+0x88/0x340 [iwlmvm]
[ 5.843490] ? iwl_wait_init_complete+0x30/0x30 [iwlmvm]
[ 5.843497] iwl_op_mode_mvm_start+0x72e/0xab0 [iwlmvm]
[ 5.843504] ? iwl_op_mode_mvm_start+0x72e/0xab0 [iwlmvm]
[ 5.843510] _iwl_op_mode_start.isra.10+0x4c/0xa0 [iwlwifi]
[ 5.843516] iwl_opmode_register+0x75/0xe0 [iwlwifi]
[ 5.843525] iwl_mvm_init+0x38/0x1000 [iwlmvm]
[ 6.884065] iwlwifi 0000:41:00.0: SecBoot CPU1 Status: 0x3, CPU2 Status: 0x2a58
[ 6.884069] iwlwifi 0000:41:00.0: Failed to start INIT ucode: -110
[ 6.884071] iwlwifi 0000:41:00.0: Collecting data: trigger 15 fired.
[ 7.233236] iwlwifi 0000:41:00.0: Failed to run INIT ucode: -110
我已尝试过...
用以下文件替换文件夹iwlwifi-8265-22.ucode中的文件/lib/firmware/英特尔的驱动程序。我猜想该文件夹包含适用于较新内核的 iwlwifi-8265 (-21)、(-22)、(-27)、(-31)、(-34)、(-36)。
通过 gedit 更改电源设置，wifi.powersave = 3文件中的 (3) -> (2) -> (1)/etc/NetworkManager/conf.d/default-wifi-powersave-on.conf
更新、升级、更新内核等……我通常可以很好地解决 Linux 问题，但这个问题让我很困惑。我注意到固件版本指向iwlwifi-8265-36.ucode，而英特尔驱动程序指向iwlwifi-8265-22.ucode。这是问题吗？
我花了一天时间解决这个问题，通常我可以很快解决这些问题。运气好的话，我可以第二天就解决这个问题，否则我会买两张新的 PCI 卡 :<。非常感谢任何帮助，谢谢！