huanju一台dell机器Ubuntu wifi 故障留档

非常神奇的一台机器，先说结果，放弃该机器了，让另一台机器顶上去。

故障表现：

1 在经过一路颠簸后，wifi一开，不管连没连上，屏幕都疯狂输出报错信息

bash 复制代码

[11376.275959] pcieport 0000:00:1c.7: AER: Corrected error received: id=00e7
[11376.275968] pcieport 0000:00:1c.7: PCIe Bus Error: severity=Corrected, type=Physical Layer, id=00e7(Receiver ID)
[11376.275981] pcieport 0000:00:1c.7:   device [8086:a117] error status/mask=00000001/00002000
[11376.275990] pcieport 0000:00:1c.7:    [ 0] Receiver Error         (First)
[

解决方法是把wifi 无线网卡按一按，按结实，有条件拿螺丝刀把网卡那的螺丝上紧一些。机箱也上紧一些。

问题解决

2 无法连上公司wifi网络。

可以连家里的wifi，可以连手机的"个人热点"，可以连公司windows主机的"热点"，就是连不上公司wifi。

同样的wifi无线网卡，装windows就可以连公司wifi。

使用iwlist scanning查看wifi信号，发现公司网络信号强度低，手机热点信号较高。手机拿开4-5米，可以看到信号衰减，但还是可以连上手机热点。

查看到的信息：

(base) eln@huanju:/etc/netplan$ iwlist scanning

wlp3s0 Scan completed :

Cell 01 - Address: 48:5F:08:9E:34:45

Channel:6

Frequency:2.437 GHz (Channel 6)

Quality=59/70 Signal level=-51 dBm

Encryption key:on

ESSID:"huanjupharma"

Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s

9 Mb/s; 12 Mb/s; 18 Mb/s

Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s

Mode:Master

Extra:tsf=000000b3cab1266d

Extra: Last beacon: 18680ms ago

IE: Unknown: 000C6875616E6A75706861726D61

IE: Unknown: 010882848B960C121824

IE: Unknown: 030106

IE: Unknown: 2A0104

IE: Unknown: 32043048606C

IE: Unknown: 2D1AEE1117FFFF000000000000000000000000000000000000000000

IE: Unknown: 3D1606070700000000000000000000000000000000000000

IE: WPA Version 1

Group Cipher : CCMP

Pairwise Ciphers (1) : CCMP

Authentication Suites (1) : PSK

IE: IEEE 802.11i/WPA2 Version 1

Group Cipher : CCMP

Pairwise Ciphers (1) : CCMP

Authentication Suites (1) : PSK

IE: Unknown: 7F080000080000000000

IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00

IE: Unknown: 23021300

IE: Unknown: 4605F200010000

IE: Unknown: 4A0E14000A002C01C800140005001900

IE: Unknown: 0706434E20010D1E

IE: Unknown: DD12000AEB000001103009010000000000000000

IE: Unknown: DD07000C4303000000

Cell 02 - Address: 48:5F:08:9E:34:4A

Channel:153

Frequency:5.765 GHz

Quality=56/70 Signal level=-54 dBm

Encryption key:on

ESSID:"huanjupharma"

Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s

36 Mb/s; 48 Mb/s; 54 Mb/s

Mode:Master

Extra:tsf=000000b3caa71be8

Extra: Last beacon: 18052ms ago

IE: Unknown: 000C6875616E6A75706861726D61

IE: Unknown: 01080C1218243048606C

IE: Unknown: 030199

IE: WPA Version 1

Group Cipher : CCMP

Pairwise Ciphers (1) : CCMP

Authentication Suites (1) : PSK

IE: IEEE 802.11i/WPA2 Version 1

Group Cipher : CCMP

Pairwise Ciphers (1) : CCMP

Authentication Suites (1) : PSK

IE: Unknown: 2D1AEF1117FFFF000000000000000000000000000000001804870900

IE: Unknown: 3D1699070600000000000000000000000000000000000000

IE: Unknown: 7F080000080000000040

IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00

IE: Unknown: 4605F200010000

IE: Unknown: 3304802A3A9B

IE: Unknown: 200103

IE: Unknown: 23023F00

IE: Unknown: C304027E7E7E

IE: Unknown: 070A434E2024042395052300

IE: Unknown: BF0CB179C933FAFF0C03FAFF0C03

IE: Unknown: C005019B00FAFF

IE: Unknown: DD07000C4303000000

IE: Unknown: DD21000CE700000000BF0CB101C0332AFF92042AFF9204C0050000002AFFC303010202

IE: Unknown: DD12000AEB000001103009010000000000000000

Cell 03 - Address: F6:84:8D:28:44:6E

Channel:6

Frequency:2.437 GHz (Channel 6)

Quality=30/70 Signal level=-80 dBm

Encryption key:on

ESSID:""

Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s

18 Mb/s; 36 Mb/s; 54 Mb/s

Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s

Mode:Master

Extra:tsf=000000160f779192

Extra: Last beacon: 18724ms ago

IE: Unknown: 0000

IE: Unknown: 010882848B961224486C

IE: Unknown: 030106

IE: Unknown: 050400010000

IE: Unknown: 0706434E20010D23

IE: Unknown: 330A08010203040506070809

IE: Unknown: 2A0104

IE: Unknown: 32040C183060

IE: WPA Version 1

Group Cipher : CCMP

Pairwise Ciphers (1) : CCMP

Authentication Suites (1) : PSK

IE: IEEE 802.11i/WPA2 Version 1

Group Cipher : CCMP

Pairwise Ciphers (1) : CCMP

Authentication Suites (1) : PSK

IE: Unknown: 2D1AEF1117FFFFFF0000000000000000000000000000000000000000

IE: Unknown: 3D1606070400000000000000000000000000000000000000

IE: Unknown: 4A0E14000A002C01C800140005001900

IE: Unknown: BF0CB101C033EAFF9204EAFF9204

IE: Unknown: C005000000EAFF

IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00

IE: Unknown: DD07000C4309000000

IE: Unknown: DD21000CE708000000BF0CB101C0332AFF92042AFF9204C0050000002AFFC303010202

IE: Unknown: DD49000AEB00000110101F01010000010000F4848D18446EFFFFF4848D18446E03005248595A7263614D20160206F6848D28446E9DF6848D58446E00000000000000030701F4848D18446E

Cell 04 - Address: 76:97:79:D5:2F:AA

Channel:153

Frequency:5.765 GHz

Quality=38/70 Signal level=-72 dBm

Encryption key:on

ESSID:"DIRECT-aa-HP M208 LaserJet"

Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s

36 Mb/s; 48 Mb/s; 54 Mb/s

Mode:Master

Extra:tsf=000000b3ca91cf85

Extra: Last beacon: 18052ms ago

IE: Unknown: 001A4449524543542D61612D4850204D323038204C617365724A6574

IE: Unknown: 01080C1218243048606C

IE: Unknown: 2D1A0C1103FF00000000000000000000000000000000000000000000

IE: IEEE 802.11i/WPA2 Version 1

Group Cipher : CCMP

Pairwise Ciphers (1) : CCMP

Authentication Suites (1) : PSK

IE: Unknown: 3D1699080000000000000000000000000000000000000000

IE: Unknown: 7F080500800000000000

IE: Unknown: 3B130301020304050C161718191A1B1C1D1E1F2021

IE: Unknown: DD180050F202010100000253380127A4000042435E0062322F00

IE: Unknown: DDA50050F204104A000110104400010210570001011041000100103B00010010470010962408FE1A5C4461B5129AEE0E4DE92E102100024850102300164850204C617365724A6574204D3230372D4D3231320010240007364757363441001042000B434E4846363036303034001054000800030050F20400051011001A4449524543542D61612D4850204D323038204C617365724A65741008000221081049000600372A000120

IE: Unknown: DD6A08000900040000003F0102010602010003164850204C617365724A6574204D3230372D4D32313200040736475736344100050B434E4846363036303034000610962408FE1A5C4461B5129AEE0E4DE92E0704C0A801160802007A090200180A04000000010B0400000000

enp2s0 Interface doesn't support scanning.

lo Interface doesn't support scanning.

能连上手机时的信号

(base) eln@huanju:/etc/netplan$ iwlist scanning

wlp3s0 Scan completed :

Cell 01 - Address: 92:7D:E4:AC:86:7B

Channel:6

Frequency:2.437 GHz (Channel 6)

Quality=70/70 Signal level=-40 dBm

Encryption key:on

ESSID:"showmemoney"

Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s

36 Mb/s; 48 Mb/s; 54 Mb/s

Mode:Master

Extra:tsf=00000000010fe4e0

Extra: Last beacon: 49984ms ago

IE: Unknown: 000B73686F776D656D6F6E6579

IE: Unknown: 01088C129824B048606C

IE: Unknown: 030106

IE: Unknown: 050400020000

IE: Unknown: 0706434E20010D1B

IE: Unknown: 2A0100

IE: IEEE 802.11i/WPA2 Version 1

Group Cipher : CCMP

Pairwise Ciphers (1) : CCMP

Authentication Suites (1) : PSK

IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00

IE: Unknown: 0B050100000000

IE: Unknown: 2D1A2D0117FF00000000000000000000000100000000000004000000

IE: Unknown: 3D1606080400000000000000000000000000000000000000

IE: Unknown: 7F080000000000000000

IE: Unknown: BF0C12318003FEFF5600FEFF5600

IE: Unknown: C005000000FEFF

enp2s0 Interface doesn't support scanning.

windows pc热点的信号：

wlp3s0 Scan completed :

Cell 01 - Address: D2:57:7B:CC:C8:5B

Channel:153

Frequency:5.765 GHz

Quality=42/70 Signal level=-68 dBm

Encryption key:on

ESSID:"showmemoney"

Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s

36 Mb/s; 48 Mb/s; 54 Mb/s

Mode:Master

Extra:tsf=0000000000575882

Extra: Last beacon: 142708ms ago

IE: Unknown: 000B73686F776D656D6F6E6579

IE: Unknown: 01088C129824B048606C

IE: Unknown: 050402030000

IE: Unknown: 070658585899010F

IE: Unknown: 2D1AE70917FFFF000000000000000000000000000000000000000000

IE: IEEE 802.11i/WPA2 Version 1

Group Cipher : CCMP

Pairwise Ciphers (1) : CCMP

Authentication Suites (1) : PSK

IE: Unknown: 3B0180

IE: Unknown: 3D16990F0300000000000000000000000000000000000000

IE: Unknown: 7F080400800000000060

IE: Unknown: BF0CB1798103FAFF0000FAFF0000

IE: Unknown: C005019B00FAFF

IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00

IE: Unknown: DD810050F204104A0001101044000102103B0001001047001099E78764D93F421B8F28009C8A1526C9102100094D6963726F736F66741023000757696E646F77731024000A31302E302E313930343310420001301054000800010050F20000001011000F4D4D2D3230323331313133323234341008000211681049000600372A000120

IE: Unknown: DD080050F21102000000

IE: Unknown: DD0E0050F2122B000600D0577BCCC85B

IE: Unknown: DD0B0017350101000000000000

(base) eln

从信号对比上，除了看到公司wifi信号强度较低，其它跟热点的也没看出来不同。