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I cannot connect to a wifi. I can only use internet from mobile hotspot. I have Qualcomm Atheros AR5BWB222 as a network adappter on my laptop with ath09k driver. Also I am using dual boot with windows 10. I would be really grateful for any an advice. I have already tried a lot of approaches and nothing worked.

UPDATE:

lspci -nnk | grep 0280 -A3
07:00.0 Network controller [0280]: Qualcomm Atheros AR9462 Wireless Network Adapter [168c:0034] (rev 01)
    Subsystem: Lite-On Communications Inc AR9462 Wireless Network Adapter [11ad:0802]
    Kernel driver in use: ath9k
    Kernel modules: ath9k

rfkill list all
0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
1: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no

sudo iwlist scan
       Cell 02 - Address: XXXX
                Channel:2
                Frequency:2.417 GHz (Channel 2)
                Quality=52/70  Signal level=-58 dBm  
                Encryption key:on
                ESSID:"XXXX"
                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=00000065a7c77857
                Extra: Last beacon: 36ms ago
                IE: Unknown: 00107072616E65742E637A2F31312E313331
                IE: Unknown: 010882848B961224486C
                IE: Unknown: 030102
                IE: Unknown: 2A0104
                IE: Unknown: 32040C183060
                IE: Unknown: 2D1A6C0016FF00000000000000000000000000000000000000000000
                IE: Unknown: 3D1602000400000000000000000000000000000000000000
                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: DD180050F2020101000003A4000027A4000042435E0062322F00
                IE: Unknown: 0B05010015127A
                IE: Unknown: DD07000C4300000000

I found out, I can not connect only to my home wifi (only with windows) but to other wifis I can.

Mafi
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1 Answers1

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Please check the settings in the router. WPA2-AES is preferred; not any WPA and WPA2 mixed mode and certainly not TKIP. Second, if your router is capable of N speeds, you may have better connectivity with a channel width of 20 MHz in the 2.4 GHz band instead of automatic 20/40 MHz, although it is likely to affect N speeds. I also have better luck with a fixed channel, either 1, 6 or 11, rather than automatic channel selection. Also, be certain the router is not set to use N speeds only; auto B, G and N is preferred. After making these changes, reboot the router.

Next, I recommend that your regulatory domain be set explicitly. Check yours:

sudo iw reg get

If you get 00, that is a one-size-maybe-fits-all setting. Find yours here: http://en.wikipedia.org/wiki/ISO_3166-1_alpha-2 Then set it temporarily:

sudo iw reg set IS

Of course, substitute your country code if not Iceland. Set it permanently:

sudo nano /etc/default/crda

Change the last line to read:

REGDOMAIN=IS

Proofread carefully, save and close the text editor.

Reboot and tell us if there is any improvement.

chili555
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