Wifi network card doesn't work on 12.1

English Network/Internet
#1

Hi all,

I have recently installed 12.1 on an old desktop. Wireless with a TP-Link 300Mbps wireless N PCI adapte TL-WN851ND (Atheros card with ath9k driver) is the only option for internet connection. I’ve tried both network manager and wicd, but the system will be frozen once I start the connection, and I can only rely on power off button. I’m wondering if there’s anything wrong with the network card driver. Can anyone shed some light please?

Cheers,
Seb

#2

Post result of

/sbin/lspci -nnk | grep -iA2 net
#3

I have heard of several cases where wicd is the problem. Dump it and use
NetworkManager!

#4

Sorry for the late reply. Realised the post is lack of essential info but was not able to access the machine. Here is the grep output

02:00.0 Ethernet controller [0200]: Broadcom Corporation NetXtreme BCM5751 Gigabit Ethernet PCI Express [14e4:1677] (rev 11)
Subsystem: ASUSTeK Computer Inc. Device [1043:814b]
Kernel driver in use: tg3

05:01.0 Network controller [0280]: Atheros Communications Inc. AR9287 Wireless Network Adapter [168c:002d] (rev 01)
Subsystem: Atheros Communications Inc. Device [168c:0300]
Kernel driver in use: ath9k

Here is the step by step output according to the sticky post

00:00.0 Host bridge: Intel Corporation E7525 Memory Controller Hub (rev 0c)
00:00.1 Unassigned class [ff00]: Intel Corporation E7525/E7520 Error Reporting Registers (rev 0c)
00:02.0 PCI bridge: Intel Corporation E7525/E7520/E7320 PCI Express Port A (rev 0c)
00:03.0 PCI bridge: Intel Corporation E7525/E7520/E7320 PCI Express Port A1 (rev 0c)
00:04.0 PCI bridge: Intel Corporation E7525/E7520 PCI Express Port B (rev 0c)
00:1c.0 PCI bridge: Intel Corporation 6300ESB 64-bit PCI-X Bridge (rev 02)
00:1d.0 USB Controller: Intel Corporation 6300ESB USB Universal Host Controller (rev 02)
00:1d.1 USB Controller: Intel Corporation 6300ESB USB Universal Host Controller (rev 02)
00:1d.4 System peripheral: Intel Corporation 6300ESB Watchdog Timer (rev 02)
00:1d.5 PIC: Intel Corporation 6300ESB I/O Advanced Programmable Interrupt Controller (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 0a)
00:1f.0 ISA bridge: Intel Corporation 6300ESB LPC Interface Controller (rev 02)
00:1f.1 IDE interface: Intel Corporation 6300ESB PATA Storage Controller (rev 02)
00:1f.2 IDE interface: Intel Corporation 6300ESB SATA Storage Controller (rev 02)
00:1f.3 SMBus: Intel Corporation 6300ESB SMBus Controller (rev 02)
02:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5751 Gigabit Ethernet PCI Express (rev 11)
03:00.0 VGA compatible controller: nVidia Corporation G70 [GeForce 7800 GT] (rev a1)
04:01.0 SCSI storage controller: Adaptec ASC-29320A U320 (rev 10)
04:02.0 Multimedia audio controller: Creative Labs SB Audigy (rev 04)
04:02.1 Input device controller: Creative Labs SB Audigy Game Port (rev 04)
04:02.2 FireWire (IEEE 1394): Creative Labs SB Audigy FireWire Port (rev 04)
05:01.0 Network controller: Atheros Communications Inc. AR9287 Wireless Network Adapter (rev 01)
05:02.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 61)
05:02.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 61)
05:02.2 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 63)
05:03.0 FireWire (IEEE 1394): Texas Instruments TSB43AB22A IEEE-1394a-2000 Controller (PHY/Link) [iOHCI-Lynx]

lo no wireless extensions.

eth0 no wireless extensions.

wlan0 IEEE 802.11bgn ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=20 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off

lo Interface doesn’t support scanning.

eth0 Interface doesn’t support scanning.

wlan0 Scan completed :
Cell 01 - Address: 00:0B:0E:49:1D:C0
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=34/70 Signal level=-76 dBm
Encryption key:off
ESSID:“CU-Guest-WiFi”
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s
11 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=00000000f4835a43
Extra: Last beacon: 489ms ago
IE: Unknown: 000D43552D47756573742D57694669
IE: Unknown: 010882848B0C12961824
IE: Unknown: 030106
IE: Unknown: 0706474220010D12
IE: Unknown: 0B0501000F0000
IE: Unknown: 43020000
IE: Unknown: 2A0100
IE: Unknown: 3204B048606C
IE: Unknown: DD22000B0E0200000000120C02A104A20BA30CA512A616A618A724A830AB48AE60B56CB8
IE: Unknown: DD2E000B0E03031064EC6D75000018AC84273D0462D6A1C8A4D0EDABE01C85AA56CBD824553F729D7AD5E2A6A6306626
IE: Unknown: DD180050F2020101010003A4000027A4000042435E0062322F00
Cell 02 - Address: 00:0B:0E:49:1D:C4
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=33/70 Signal level=-77 dBm
Encryption key:on
ESSID:“eduroam”
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s
11 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=00000000f4835a43
Extra: Last beacon: 486ms ago
IE: Unknown: 0007656475726F616D
IE: Unknown: 010882848B0C12961824
IE: Unknown: 030106
IE: Unknown: 0706474220010D12
IE: Unknown: 0B0501000F0000
IE: Unknown: 43020000
IE: Unknown: 2A0100
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : 802.1x
IE: Unknown: 3204B048606C
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (1) : TKIP
Authentication Suites (1) : 802.1x
IE: Unknown: DD22000B0E0200000000120C02A104A20BA30CA512A616A618A724A830AB48AE60B56CB8
IE: Unknown: DD2E000B0E03031064EC6D75000018AE84273D0462D6A1C8A4D0EDABE01C85AA436C0ECBF995181B4528D033B11D2365
IE: Unknown: DD180050F2020101010003A4000027A4000042435E0062322F00
Cell 03 - Address: 00:0B:0E:49:1D:C2
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=33/70 Signal level=-77 dBm
Encryption key:off
ESSID:“CU-WiFi”
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s
11 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=00000000f4835a43
Extra: Last beacon: 487ms ago
IE: Unknown: 000743552D57694669
IE: Unknown: 010882848B0C12961824
IE: Unknown: 030106
IE: Unknown: 0706474220010D12
IE: Unknown: 0B0501000F0000
IE: Unknown: 43020000
IE: Unknown: 2A0100
IE: Unknown: 3204B048606C
IE: Unknown: DD22000B0E0200000000120C02A104A20BA30CA512A616A618A724A830AB48AE60B56CB8
IE: Unknown: DD2E000B0E03031064EC6D75000018AD84273D0462D6A1C8A4D0EDABE01C85AA870D9A5722E6BDEE11F4693407941B30
IE: Unknown: DD180050F2020101010003A4000027A4000042435E0062322F00

Hope this shows the essential info. Much appreciated.

Cheers,
Seb

#5

Yes I have tried network manager but is also freezes once I connect it. :frowning: