我的装了系统之后可以连接，这两天大爷的家里的WIFI找不到了

也是这款机器吗？

内核版本？网卡型号？

不是哦，是戴尔的

liushanjian@lsj:~/Desktop$ cat /proc/version
Linux version 5.4.70-amd64-desktop (deepin@deepin-PC) (gcc version 8.3.0 (Uos 8.3.0.3-3+rebuild)) #1 SMP Wed Oct 14 15:24:23 CST 2020
liushanjian@lsj:~/Desktop$ uname -a
Linux lsj 5.4.70-amd64-desktop #1 SMP Wed Oct 14 15:24:23 CST 2020 x86_64 GNU/Linux

liushanjian@lsj:~/Desktop$ lspci -vvv
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers (rev 08)
Subsystem: Lenovo Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- SERR- Latency: 0
Capabilities:
Kernel driver in use: skl_uncore

00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 620 (rev 07) (prog-if 00 [VGA controller])
Subsystem: Lenovo UHD Graphics 620
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- SERR- Latency: 0
Interrupt: pin A routed to IRQ 11
Region 0: Memory at f1000000 (64-bit, non-prefetchable) [size=16M]
Region 2: Memory at c0000000 (64-bit, prefetchable) [size=512M]
Region 4: I/O ports at e000 [size=64]
[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities:
Kernel modules: i915

00:08.0 System peripheral: Intel Corporation Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th/8th Gen Core Processor Gaussian Mixture Model
Subsystem: Lenovo Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th Gen Core Processor Gaussian

 liushanjian@lsj:~/Desktop$ lsmod 

Module Size Used by
ccm 20480 0
snd_hda_codec_hdmi 61440 0
snd_hda_codec_conexant 28672 1
snd_hda_codec_generic 81920 1 snd_hda_codec_conexant
rtl8xxxu 126976 0
mac80211 843776 1 rtl8xxxu
libarc4 16384 1 mac80211
rfcomm 81920 16
cmac 16384 1
bnep 24576 2
btusb 57344 0
btrtl 20480 1 btusb
btbcm 16384 1 btusb
btintel 24576 1 btusb
bluetooth 573440 41 btrtl,btintel,btbcm,bnep,btusb,rfcomm
ecdh_generic 16384 2 bluetooth
ecc 32768 1 ecdh_generic
uvcvideo 98304 0
nls_iso8859_1 16384 1
intel_rapl_msr 20480 0
intel_rapl_common 24576 1 intel_rapl_msr
x86_pkg_temp_thermal 20480 0
intel_powerclamp 20480 0
joydev 24576 0
coretemp 20480 0
kvm_intel 253952 0
mei_hdcp 24576 0
kvm 659456 1 kvm_intel
crct10dif_pclmul 16384 1
crc32_pclmul 16384 0
rmi_smbus 16384 0
snd_hda_intel 53248 3
ghash_clmulni_intel 16384 0
rmi_core 81920 1 rmi_smbus
cryptd 24576 1 ghash_clmulni_intel
snd_intel_nhlt 20480 1 snd_hda_intel
videobuf2_vmalloc 20480 2 rmi_core,uvcvideo
rapl 20480 0
videobuf2_memops 20480 1 videobuf2_vmalloc
snd_hda_codec 135168 4 snd_hda_codec_generic,snd_hda_codec_conexant,snd_hda_codec_hdmi,snd_hda_intel
wl 6455296 0
videobuf2_v4l2 24576 2 rmi_core,uvcvideo
snd_hda_core 90112 5 snd_hda_codec_generic,snd_hda_codec_conexant,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
snd_hwdep 20480 1 snd_hda_codec
intel_cstate 20480 0
videobuf2_common 5324

帮看下，这个是相关信息