Wifi continua desconectando no Ubuntu

1

Estou usando o Ubuntu. wifi funciona muito bem no meu laptop. Eu estou enfrentando problema com um roteador wifi particular (acho que Airtel Binatone) instalado nas instalações da minha empresa,

Aqui estão alguns registros

1) sudo iwlist scan

Cell 01 - Address: 00:18:0A:21:9E:EE
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=70/70  Signal level=-40 dBm  
                    Encryption key:on
                    ESSID:"314eMeraki1"
                    Bit Rates:11 Mb/s; 11 Mb/s; 6 Mb/s; 9 Mb/s; 12 Mb/s
                              18 Mb/s; 24 Mb/s; 36 Mb/s
                    Bit Rates:48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=00000004572cfe90
                    Extra: Last beacon: 8ms ago
                    IE: Unknown: 000B333134654D6572616B6931
                    IE: Unknown: 010896960C1218243048
                    IE: Unknown: 030101
                    IE: Unknown: 0706555320010B1E
                    IE: Unknown: 2A0103
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 3202606C
                    IE: Unknown: 460573C0010000
                    IE: Unknown: 33020C01
                    IE: Unknown: 2D1A8C011BFFFF000000000000000000008000000000000000000000
                    IE: Unknown: 3D1601000500000000000000000000000000000000000000
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101040003A4000027A4000042435E0062322F00
                    IE: Unknown: DD0900037F01010000FF7F
                    IE: Unknown: DD0D00180A07240000000100EC3E78
          Cell 02 - Address: 00:18:0A:21:29:FC
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=52/70  Signal level=-58 dBm  
                    Encryption key:on
                    ESSID:"314eMeraki1"
                    Bit Rates:11 Mb/s; 11 Mb/s; 6 Mb/s; 9 Mb/s; 12 Mb/s
                              18 Mb/s; 24 Mb/s; 36 Mb/s
                    Bit Rates:48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=00000003f1d88965
                    Extra: Last beacon: 8ms ago
                    IE: Unknown: 000B333134654D6572616B6931
                    IE: Unknown: 010896960C1218243048
                    IE: Unknown: 030101
                    IE: Unknown: 0706555320010B1E
                    IE: Unknown: 2A0103
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 3202606C
                    IE: Unknown: 460573C0010000
                    IE: Unknown: 33020C01
                    IE: Unknown: 2D1A8C011BFFFF000000000000000000008000000000000000000000
                    IE: Unknown: 3D1601000500000000000000000000000000000000000000
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101080003A4000027A4000042435E0062322F00
                    IE: Unknown: DD0900037F01010000FF7F
                    IE: Unknown: DD0D00180A07160000000100EC3E78

2) dmesg

[ 1768.252817] wlan0: authenticate with 00:18:0a:21:29:fc
[ 1768.272963] wlan0: send auth to 00:18:0a:21:29:fc (try 1/3)
[ 1768.276056] wlan0: authenticated
[ 1768.280370] wlan0: associate with 00:18:0a:21:29:fc (try 1/3)
[ 1768.283766] wlan0: RX AssocResp from 00:18:0a:21:29:fc (capab=0x1431 status=0 aid=5)
[ 1768.284015] wlan0: associated
[ 1768.284081] cfg80211: Calling CRDA for country: US
[ 1768.286074] cfg80211: Regulatory domain changed to country: US
[ 1768.286078] cfg80211:  DFS Master region: FCC
[ 1768.286079] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
[ 1768.286082] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2700 mBm), (N/A)
[ 1768.286083] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 1700 mBm), (N/A)
[ 1768.286085] cfg80211:   (5250000 KHz - 5330000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (0 s)
[ 1768.286086] cfg80211:   (5490000 KHz - 5600000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (0 s)
[ 1768.286087] cfg80211:   (5650000 KHz - 5710000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (0 s)
[ 1768.286089] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 3000 mBm), (N/A)
[ 1768.286090] cfg80211:   (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 4000 mBm), (N/A)
[ 1771.795816] wlan0: disassociated from 00:18:0a:21:29:fc (Reason: 2)
[ 1771.811893] cfg80211: Calling CRDA to update world regulatory domain
[ 1771.817867] cfg80211: World regulatory domain updated:
[ 1771.817876] cfg80211:  DFS Master region: unset
[ 1771.817879] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
[ 1771.817885] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 1771.817890] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 1771.817894] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 1771.817898] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 1771.817901] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)

==========

authenticate with 00:18:0a:21:9e:ee
[ 2435.747062] wlan0: send auth to 00:18:0a:21:9e:ee (try 1/3)
[ 2435.748843] wlan0: authenticated
[ 2435.750491] wlan0: associate with 00:18:0a:21:9e:ee (try 1/3)
[ 2435.753988] wlan0: RX AssocResp from 00:18:0a:21:9e:ee (capab=0x1431 status=0 aid=13)
[ 2435.754237] wlan0: associated
[ 2435.754768] cfg80211: Calling CRDA for country: US
[ 2435.756678] cfg80211: Regulatory domain changed to country: US
[ 2435.756681] cfg80211:  DFS Master region: FCC
[ 2435.756682] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
[ 2435.756684] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2700 mBm), (N/A)
[ 2435.756686] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 1700 mBm), (N/A)
[ 2435.756687] cfg80211:   (5250000 KHz - 5330000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (0 s)
[ 2435.756688] cfg80211:   (5490000 KHz - 5600000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (0 s)
[ 2435.756689] cfg80211:   (5650000 KHz - 5710000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (0 s)
[ 2435.756690] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 3000 mBm), (N/A)
[ 2435.756692] cfg80211:   (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 4000 mBm), (N/A)
[ 2436.565119] wlan0: deauthenticating from 00:18:0a:21:9e:ee by local choice (Reason: 14=MIC_FAILURE)
[ 2436.576178] cfg80211: Calling CRDA to update world regulatory domain
[ 2436.578321] cfg80211: World regulatory domain updated:
[ 2436.578325] cfg80211:  DFS Master region: unset
[ 2436.578326] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
[ 2436.578329] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 2436.578331] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 2436.578333] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 2436.578335] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 2436.578336] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)


on one cell, i am getting 
Reason: 14=MIC_FAILURE
on second cell,
Reason: 2
    
por Narendra Sisodiya 15.06.2015 / 09:54

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