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#1 2014-07-01 01:28:29

necbot
Member
Registered: 2013-12-05
Posts: 59

[SOLVED] Cannot see 5 GHz network

My network card is a dual band card which I have successfully used to connect to my 5 GHz network.  When I booted Arch from the USB installation media I ran wifi-menu and saw my 5 GHz network and successfully connected to it.  During the installation my 5 GHz connection dropped and I haven't been able to connect to my 5 GHz network since.  I can only see my 2.4 GHz network (which I can connect to).  I would like to use my 5 GHz network though.  How do I do this?

Useful information....
I've verified that my 5 GHz network is up, I can connect to it on my other computer
My network card works fine, if I attach it to my laptop my laptop connects to my 5 GHz network fine
My card is a Rosewill RNX-N600UBE
Running lsmod shows I'm using drivers rt2x00usb,rt2800usb

Last edited by necbot (2014-07-03 15:50:59)

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#2 2014-07-01 02:11:35

ewaller
Administrator
From: Pasadena, CA
Registered: 2009-07-13
Posts: 20,210

Re: [SOLVED] Cannot see 5 GHz network

What is the output of iw list  ?

Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
---
How to Ask Questions the Smart Way

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#3 2014-07-01 10:01:16

necbot
Member
Registered: 2013-12-05
Posts: 59

Re: [SOLVED] Cannot see 5 GHz network

Output of iw list is....

Wiphy phy0
	max # scan SSIDs: 4
	max scan IEs length: 2257 bytes
	Coverage class: 0 (up to 0m)
	Device supports RSN-IBSS.
	Supported Ciphers:
		* WEP40 (00-0f-ac:1)
		* WEP104 (00-0f-ac:5)
		* TKIP (00-0f-ac:2)
		* CCMP (00-0f-ac:4)
	Available Antennas: TX 0 RX 0
	Supported interface modes:
		 * IBSS
		 * managed
		 * AP
		 * AP/VLAN
		 * WDS
		 * monitor
		 * mesh point
	Band 1:
		Capabilities: 0x2f2
			HT20/HT40
			Static SM Power Save
			RX Greenfield
			RX HT20 SGI
			RX HT40 SGI
			TX STBC
			RX STBC 2-streams
			Max AMSDU length: 3839 bytes
			No DSSS/CCK HT40
		Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
		Minimum RX AMPDU time spacing: 2 usec (0x04)
		HT RX MCS rate indexes supported: 0-15, 32
		TX unequal modulation not supported
		HT TX Max spatial streams: 2
		HT TX MCS rate indexes supported may differ
		Bitrates (non-HT):
			* 1.0 Mbps
			* 2.0 Mbps (short preamble supported)
			* 5.5 Mbps (short preamble supported)
			* 11.0 Mbps (short preamble supported)
			* 6.0 Mbps
			* 9.0 Mbps
			* 12.0 Mbps
			* 18.0 Mbps
			* 24.0 Mbps
			* 36.0 Mbps
			* 48.0 Mbps
			* 54.0 Mbps
		Frequencies:
			* 2412 MHz [1] (20.0 dBm)
			* 2417 MHz [2] (20.0 dBm)
			* 2422 MHz [3] (20.0 dBm)
			* 2427 MHz [4] (20.0 dBm)
			* 2432 MHz [5] (20.0 dBm)
			* 2437 MHz [6] (20.0 dBm)
			* 2442 MHz [7] (20.0 dBm)
			* 2447 MHz [8] (20.0 dBm)
			* 2452 MHz [9] (20.0 dBm)
			* 2457 MHz [10] (20.0 dBm)
			* 2462 MHz [11] (20.0 dBm)
			* 2467 MHz [12] (20.0 dBm) (no IR)
			* 2472 MHz [13] (20.0 dBm) (no IR)
			* 2484 MHz [14] (20.0 dBm) (no IR)
	Band 2:
		Capabilities: 0x2f2
			HT20/HT40
			Static SM Power Save
			RX Greenfield
			RX HT20 SGI
			RX HT40 SGI
			TX STBC
			RX STBC 2-streams
			Max AMSDU length: 3839 bytes
			No DSSS/CCK HT40
		Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
		Minimum RX AMPDU time spacing: 2 usec (0x04)
		HT RX MCS rate indexes supported: 0-15, 32
		TX unequal modulation not supported
		HT TX Max spatial streams: 2
		HT TX MCS rate indexes supported may differ
		Bitrates (non-HT):
			* 6.0 Mbps
			* 9.0 Mbps
			* 12.0 Mbps
			* 18.0 Mbps
			* 24.0 Mbps
			* 36.0 Mbps
			* 48.0 Mbps
			* 54.0 Mbps
		Frequencies:
			* 5180 MHz [36] (20.0 dBm) (no IR)
			* 5190 MHz [38] (20.0 dBm) (no IR)
			* 5200 MHz [40] (20.0 dBm) (no IR)
			* 5220 MHz [44] (20.0 dBm) (no IR)
			* 5230 MHz [46] (20.0 dBm) (no IR)
			* 5240 MHz [48] (20.0 dBm) (no IR)
			* 5260 MHz [52] (20.0 dBm) (no IR, radar detection)
			  DFS state: usable (for 114 sec)
			* 5270 MHz [54] (20.0 dBm) (no IR, radar detection)
			  DFS state: usable (for 114 sec)
			* 5280 MHz [56] (20.0 dBm) (no IR, radar detection)
			  DFS state: usable (for 114 sec)
			* 5300 MHz [60] (20.0 dBm) (no IR, radar detection)
			  DFS state: usable (for 114 sec)
			* 5310 MHz [62] (20.0 dBm) (no IR, radar detection)
			  DFS state: usable (for 114 sec)
			* 5320 MHz [64] (20.0 dBm) (no IR, radar detection)
			  DFS state: usable (for 114 sec)
			* 5500 MHz [100] (20.0 dBm) (no IR, radar detection)
			  DFS state: usable (for 114 sec)
			* 5510 MHz [102] (20.0 dBm) (no IR, radar detection)
			  DFS state: usable (for 114 sec)
			* 5520 MHz [104] (20.0 dBm) (no IR, radar detection)
			  DFS state: usable (for 114 sec)
			* 5540 MHz [108] (20.0 dBm) (no IR, radar detection)
			  DFS state: usable (for 114 sec)
			* 5550 MHz [110] (20.0 dBm) (no IR, radar detection)
			  DFS state: usable (for 114 sec)
			* 5560 MHz [112] (20.0 dBm) (no IR, radar detection)
			  DFS state: usable (for 114 sec)
			* 5580 MHz [116] (20.0 dBm) (no IR, radar detection)
			  DFS state: usable (for 114 sec)
			* 5590 MHz [118] (20.0 dBm) (no IR, radar detection)
			  DFS state: usable (for 114 sec)
			* 5600 MHz [120] (20.0 dBm) (no IR, radar detection)
			  DFS state: usable (for 114 sec)
			* 5620 MHz [124] (20.0 dBm) (no IR, radar detection)
			  DFS state: usable (for 114 sec)
			* 5630 MHz [126] (20.0 dBm) (no IR, radar detection)
			  DFS state: usable (for 114 sec)
			* 5640 MHz [128] (20.0 dBm) (no IR, radar detection)
			  DFS state: usable (for 114 sec)
			* 5660 MHz [132] (20.0 dBm) (no IR, radar detection)
			  DFS state: usable (for 114 sec)
			* 5670 MHz [134] (20.0 dBm) (no IR, radar detection)
			  DFS state: usable (for 114 sec)
			* 5680 MHz [136] (20.0 dBm) (no IR, radar detection)
			  DFS state: usable (for 114 sec)
			* 5700 MHz [140] (20.0 dBm) (no IR, radar detection)
			  DFS state: usable (for 114 sec)
			* 5745 MHz [149] (disabled)
			* 5755 MHz [151] (disabled)
			* 5765 MHz [153] (disabled)
			* 5785 MHz [157] (disabled)
			* 5795 MHz [159] (disabled)
			* 5805 MHz [161] (disabled)
			* 5825 MHz [165] (disabled)
			* 5835 MHz [167] (disabled)
			* 5845 MHz [169] (disabled)
			* 5855 MHz [171] (disabled)
			* 5865 MHz [173] (disabled)
	Supported commands:
		 * new_interface
		 * set_interface
		 * new_key
		 * start_ap
		 * new_station
		 * new_mpath
		 * set_mesh_config
		 * set_bss
		 * authenticate
		 * associate
		 * deauthenticate
		 * disassociate
		 * join_ibss
		 * join_mesh
		 * set_tx_bitrate_mask
		 * frame
		 * frame_wait_cancel
		 * set_wiphy_netns
		 * set_channel
		 * set_wds_peer
		 * probe_client
		 * set_noack_map
		 * register_beacons
		 * start_p2p_device
		 * set_mcast_rate
		 * Unknown command (104)
		 * connect
		 * disconnect
	Supported TX frame types:
		 * IBSS: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
		 * managed: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
		 * AP: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
		 * AP/VLAN: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
		 * mesh point: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
		 * P2P-client: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
		 * P2P-GO: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
		 * P2P-device: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
	Supported RX frame types:
		 * IBSS: 0x40 0xb0 0xc0 0xd0
		 * managed: 0x40 0xd0
		 * AP: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
		 * AP/VLAN: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
		 * mesh point: 0xb0 0xc0 0xd0
		 * P2P-client: 0x40 0xd0
		 * P2P-GO: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
		 * P2P-device: 0x40 0xd0
	software interface modes (can always be added):
		 * AP/VLAN
		 * monitor
	valid interface combinations:
		 * #{ AP, mesh point } <= 8,
		   total <= 8, #channels <= 1
	HT Capability overrides:
		 * MCS: ff ff ff ff ff ff ff ff ff ff
		 * maximum A-MSDU length
		 * supported channel width
		 * short GI for 40 MHz
		 * max A-MPDU length exponent
		 * min MPDU start spacing
	Device supports TX status socket option.
	Device supports HT-IBSS.
	Device supports low priority scan.
	Device supports scan flush.
	Device supports AP scan.

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#4 2014-07-01 15:00:09

ewaller
Administrator
From: Pasadena, CA
Registered: 2009-07-13
Posts: 20,210

Re: [SOLVED] Cannot see 5 GHz network

Well, that report indicates that your system knows that it has 5 GHz.  This is good.
You say it "cannot see" the 5GHz network.  How did you make that determination? Could you post the output of (when run as root) ip wlan0 scan iw wlan0 scan   ?  (Replace wlan0 with the name of your interface)

Other things to consider will be whether you might be missing some firmware, or possibly your regulatory domain.  It might be possible that your machine does not know what country it is in and is therefore not using the full range of frequencies available to you.  If your router is using a frequency that your machine does not think it is permitted to use, you might not see it.  I know your router is in the 5GHz band, but you may want to find the specific frequency or channel it is using (check with your other computer).  Then we can check it is in the list you proved above

Last edited by ewaller (2014-07-01 15:18:16)

Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
---
How to Ask Questions the Smart Way

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#5 2014-07-01 15:15:38

qinohe
Member
From: Netherlands
Registered: 2012-06-20
Posts: 1,494

Re: [SOLVED] Cannot see 5 GHz network

@ewaller; I think you mean iw wlan0 scan. wink

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#6 2014-07-01 15:18:52

ewaller
Administrator
From: Pasadena, CA
Registered: 2009-07-13
Posts: 20,210

Re: [SOLVED] Cannot see 5 GHz network

qinohe wrote:

@ewaller; I think you mean iw wlan0 scan. wink

Yes I did.  Thank you, good catch.

Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
---
How to Ask Questions the Smart Way

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#7 2014-07-01 22:23:37

necbot
Member
Registered: 2013-12-05
Posts: 59

Re: [SOLVED] Cannot see 5 GHz network

When I run... iw phy0 scan I just get the usage help file of iw.  I also get the same thing if I sudo iw phy0 scan

I determined that I could not see any 5 GHz networks using wifi-menu and NetworkManager.  My 5 GHz network does not show up using either one.

dmesg showed this...

[    2.098803] ieee80211 phy0: rt2x00_set_rt: Info - RT chipset 3572, rev 0223 detected
[    2.126971] ieee80211 phy0: rt2x00_set_rf: Info - RF chipset 0009 detected
[    2.129557] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
[    2.129868] usbcore: registered new interface driver rt2800usb
[    2.159963] systemd-udevd[206]: renamed network interface wlan0 to wlp0s26u1u4
[    2.161667] ieee80211 phy0: rt2x00lib_request_firmware: Info - Loading firmware file 'rt2870.bin'
[    2.162461] ieee80211 phy0: rt2x00lib_request_firmware: Info - Firmware detected - version: 0.29
[    2.386876] Switched to clocksource tsc
[    2.430186] IPv6: ADDRCONF(NETDEV_UP): wlp0s26u1u4: link is not ready
[    2.463588] NVRM: Your system is not currently configured to drive a VGA console
[    2.463592] NVRM: on the primary VGA device. The NVIDIA Linux graphics driver
[    2.463593] NVRM: requires the use of a text-mode VGA console. Use of other console
[    2.463594] NVRM: drivers including, but not limited to, vesafb, may result in
[    2.463595] NVRM: corruption and stability problems, and is not supported.
[   13.011609] wlp0s26u1u4: authenticate with c0:3f:0e:86:e9:dc
[   13.064835] wlp0s26u1u4: send auth to c0:3f:0e:86:e9:dc (try 1/3)
[   13.066601] wlp0s26u1u4: authenticated
[   13.069106] wlp0s26u1u4: associate with c0:3f:0e:86:e9:dc (try 1/3)
[   13.072370] wlp0s26u1u4: RX AssocResp from c0:3f:0e:86:e9:dc (capab=0x411 status=0 aid=2)
[   13.082983] wlp0s26u1u4: associated
[   13.083019] IPv6: ADDRCONF(NETDEV_CHANGE): wlp0s26u1u4: link becomes ready
[   13.098363] wlp0s26u1u4: deauthenticating from c0:3f:0e:86:e9:dc by local choice (Reason: 2=PREV_AUTH_NOT_VALID)
[   13.147129] wlp0s26u1u4: authenticate with c0:3f:0e:86:e9:dc
[   13.181380] wlp0s26u1u4: send auth to c0:3f:0e:86:e9:dc (try 1/3)
[   13.181795] cfg80211: Calling CRDA for country: US
[   13.183146] wlp0s26u1u4: authenticated
[   13.185953] wlp0s26u1u4: associate with c0:3f:0e:86:e9:dc (try 1/3)
[   13.189291] wlp0s26u1u4: RX AssocResp from c0:3f:0e:86:e9:dc (capab=0x411 status=0 aid=2)
[   13.199276] wlp0s26u1u4: associated
[   14.940377] fuse init (API version 7.23)

It says that my firmware is detected for this wifi card

Last edited by necbot (2014-07-01 22:28:18)

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#8 2014-07-02 02:54:11

ewaller
Administrator
From: Pasadena, CA
Registered: 2009-07-13
Posts: 20,210

Re: [SOLVED] Cannot see 5 GHz network

Your device name is wlp0s26u1u4, so the command would be iw wlp0s26u1u4 scan
Also, did you get a chance to find out the specific frequency or channel your access point uses?
What regulatory environment are you in?  (What country, if you are willing to share?)

Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
---
How to Ask Questions the Smart Way

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#9 2014-07-02 09:51:29

necbot
Member
Registered: 2013-12-05
Posts: 59

Re: [SOLVED] Cannot see 5 GHz network

My 5 GHz network is using frequency 5.745.  I am in the United States.  The output of my scan is...

BSS 00:1f:90:d1:12:ec(on wlp0s26u1u4)
	TSF: 227179980081 usec (2d, 15:06:19)
	freq: 2412
	beacon interval: 100 TUs
	capability: ESS Privacy ShortPreamble ShortSlotTime (0x0431)
	signal: -69.00 dBm
	last seen: 14970 ms ago
	Information elements from Probe Response frame:
	SSID: DM2Y3
	Supported rates: 1.0* 2.0* 5.5* 6.0 9.0 11.0* 12.0 18.0 
	DS Parameter set: channel 1
	Country: US	Environment: Indoor/Outdoor
		Channels [1 - 11] @ 27 dBm
	Power constraint: 0 dB
	ERP: <no flags>
	Extended supported rates: 24.0 36.0 48.0 54.0 
BSS 00:26:f2:90:76:9e(on wlp0s26u1u4)
	TSF: 136713773011 usec (1d, 13:58:33)
	freq: 2417
	beacon interval: 100 TUs
	capability: ESS Privacy ShortPreamble ShortSlotTime (0x0431)
	signal: -67.00 dBm
	last seen: 14640 ms ago
	Information elements from Probe Response frame:
	SSID: 36SherbornSt
	Supported rates: 1.0* 2.0* 5.5* 11.0* 6.0* 9.0 12.0* 18.0 
	DS Parameter set: channel 2
	Country: US	Environment: Indoor/Outdoor
		Channels [1 - 11] @ 27 dBm
	RSN:	 * Version: 1
		 * Group cipher: CCMP
		 * Pairwise ciphers: CCMP
		 * Authentication suites: PSK
		 * Capabilities: 1-PTKSA-RC 1-GTKSA-RC (0x0000)
	ERP: <no flags>
	Extended supported rates: 24.0* 36.0 48.0 54.0 
	WMM:	 * Parameter version 1
		 * u-APSD
		 * BE: CW 15-1023, AIFSN 3
		 * BK: CW 15-1023, AIFSN 7
		 * VI: CW 7-15, AIFSN 2, TXOP 3008 usec
		 * VO: CW 3-7, AIFSN 2, TXOP 1504 usec
	HT capabilities:
		Capabilities: 0x114e
			HT20/HT40
			SM Power Save disabled
			RX HT40 SGI
			RX STBC 1-stream
			Max AMSDU length: 3839 bytes
			DSSS/CCK HT40
		Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
		Minimum RX AMPDU time spacing: 8 usec (0x06)
		HT RX MCS rate indexes supported: 0-7
		HT TX MCS rate indexes are undefined
	HT operation:
		 * primary channel: 2
		 * secondary channel offset: above
		 * STA channel width: any
		 * RIFS: 1
		 * HT protection: 20 MHz
		 * non-GF present: 0
		 * OBSS non-GF present: 0
		 * dual beacon: 0
		 * dual CTS protection: 0
		 * STBC beacon: 0
		 * L-SIG TXOP Prot: 0
		 * PCO active: 0
		 * PCO phase: 0
	WPS:	 * Version: 1.0
		 * Wi-Fi Protected Setup State: 2 (Configured)
		 * Response Type: 3 (AP)
		 * UUID: 00000000-0000-1000-0000-0026f290769e
		 * Manufacturer: Netgear, Inc.
		 * Model: WNR1000v2
		 * Model Number: V2H1
		 * Serial Number: none
		 * Primary Device Type: 6-0050f204-1
		 * Device name: WNR1000v2-VC(Wireless AP-2.4G)
		 * Config methods: Ethernet, Label, PBC
		 * RF Bands: 0x3
BSS f8:e4:fb:08:06:ec(on wlp0s26u1u4)
	TSF: 197811351147 usec (2d, 06:56:51)
	freq: 2437
	beacon interval: 100 TUs
	capability: ESS Privacy ShortPreamble ShortSlotTime (0x0431)
	signal: -73.00 dBm
	last seen: 13336 ms ago
	Information elements from Probe Response frame:
	SSID: XJLR2
	Supported rates: 1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 
	DS Parameter set: channel 6
	Power constraint: 0 dB
	RSN:	 * Version: 1
		 * Group cipher: CCMP
		 * Pairwise ciphers: CCMP
		 * Authentication suites: PSK
		 * Capabilities: 1-PTKSA-RC 1-GTKSA-RC (0x0000)
	ERP: <no flags>
	Extended supported rates: 24.0 36.0 48.0 54.0 
	WMM:	 * Parameter version 1
		 * BE: CW 15-1023, AIFSN 3
		 * BK: CW 15-1023, AIFSN 7
		 * VI: CW 7-15, AIFSN 2, TXOP 3008 usec
		 * VO: CW 3-7, AIFSN 2, TXOP 1504 usec
	HT capabilities:
		Capabilities: 0x138c
			HT20
			SM Power Save disabled
			TX STBC
			RX STBC 3-streams
			Max AMSDU length: 3839 bytes
			DSSS/CCK HT40
		Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
		Minimum RX AMPDU time spacing: 8 usec (0x06)
		HT RX MCS rate indexes supported: 0-15
		HT TX MCS rate indexes are undefined
	HT operation:
		 * primary channel: 6
		 * secondary channel offset: no secondary
		 * STA channel width: 20 MHz
		 * RIFS: 1
		 * HT protection: no
		 * non-GF present: 0
		 * OBSS non-GF present: 0
		 * dual beacon: 0
		 * dual CTS protection: 0
		 * STBC beacon: 0
		 * L-SIG TXOP Prot: 0
		 * PCO active: 0
		 * PCO phase: 0
	Country: US	Environment: Indoor/Outdoor
		Channels [1 - 11] @ 27 dBm
BSS c0:3f:0e:86:e9:dc(on wlp0s26u1u4) -- associated
	TSF: 117268799112 usec (1d, 08:34:28)
	freq: 2452
	beacon interval: 100 TUs
	capability: ESS Privacy ShortSlotTime (0x0411)
	signal: -41.00 dBm
	last seen: 186 ms ago
	Information elements from Probe Response frame:
	SSID: superhappyfunnetwork
	Supported rates: 1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 
	DS Parameter set: channel 9
	Country: US	Environment: Indoor/Outdoor
		Channels [1 - 11] @ 27 dBm
	ERP: Barker_Preamble_Mode
	Extended supported rates: 24.0 36.0 48.0 54.0 
	RSN:	 * Version: 1
		 * Group cipher: CCMP
		 * Pairwise ciphers: CCMP
		 * Authentication suites: PSK
		 * Capabilities: 16-PTKSA-RC 1-GTKSA-RC (0x000c)
	HT capabilities:
		Capabilities: 0x11cc
			HT20
			SM Power Save disabled
			RX HT40 SGI
			TX STBC
			RX STBC 1-stream
			Max AMSDU length: 3839 bytes
			DSSS/CCK HT40
		Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
		Minimum RX AMPDU time spacing: 8 usec (0x06)
		HT TX/RX MCS rate indexes supported: 0-15
	HT operation:
		 * primary channel: 9
		 * secondary channel offset: no secondary
		 * STA channel width: 20 MHz
		 * RIFS: 0
		 * HT protection: non-HT mixed
		 * non-GF present: 1
		 * OBSS non-GF present: 1
		 * dual beacon: 0
		 * dual CTS protection: 0
		 * STBC beacon: 0
		 * L-SIG TXOP Prot: 0
		 * PCO active: 0
		 * PCO phase: 0
	WMM:	 * Parameter version 1
		 * BE: CW 15-1023, AIFSN 3
		 * BK: CW 15-1023, AIFSN 7
		 * VI: CW 7-15, AIFSN 2, TXOP 3008 usec
		 * VO: CW 3-7, AIFSN 2, TXOP 1504 usec
BSS 00:26:b8:a8:33:33(on wlp0s26u1u4)
	TSF: 476394913298 usec (5d, 12:19:54)
	freq: 2462
	beacon interval: 100 TUs
	capability: ESS Privacy ShortPreamble ShortSlotTime (0x0431)
	signal: -87.00 dBm
	last seen: 11700 ms ago
	Information elements from Probe Response frame:
	SSID: N7ZLK
	Supported rates: 1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 
	DS Parameter set: channel 11
	Power constraint: 0 dB
	ERP: <no flags>
	Extended supported rates: 24.0 36.0 48.0 54.0 
	WMM:	 * Parameter version 1
		 * BE: CW 15-1023, AIFSN 3
		 * BK: CW 15-1023, AIFSN 7
		 * VI: CW 7-15, AIFSN 2, TXOP 3008 usec
		 * VO: CW 3-7, AIFSN 2, TXOP 1504 usec
	HT capabilities:
		Capabilities: 0x138c
			HT20
			SM Power Save disabled
			TX STBC
			RX STBC 3-streams
			Max AMSDU length: 3839 bytes
			DSSS/CCK HT40
		Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
		Minimum RX AMPDU time spacing: 8 usec (0x06)
		HT RX MCS rate indexes supported: 0-7
		HT TX MCS rate indexes are undefined
	HT operation:
		 * primary channel: 11
		 * secondary channel offset: no secondary
		 * STA channel width: 20 MHz
		 * RIFS: 0
		 * HT protection: non-HT mixed
		 * non-GF present: 0
		 * OBSS non-GF present: 1
		 * dual beacon: 0
		 * dual CTS protection: 0
		 * STBC beacon: 0
		 * L-SIG TXOP Prot: 0
		 * PCO active: 0
		 * PCO phase: 0
	Country: US	Environment: Indoor/Outdoor
		Channels [1 - 11] @ 27 dBm
BSS 00:1d:d5:b5:32:20(on wlp0s26u1u4)
	TSF: 1122549938144 usec (12d, 23:49:09)
	freq: 2462
	beacon interval: 100 TUs
	capability: ESS Privacy ShortSlotTime APSD (0x0c11)
	signal: -73.00 dBm
	last seen: 11706 ms ago
	SSID: HOME-3222
	Supported rates: 1.0* 2.0* 5.5* 11.0* 9.0 18.0 36.0 54.0 
	DS Parameter set: channel 11
	ERP: Barker_Preamble_Mode
	Extended supported rates: 6.0* 12.0* 24.0* 48.0 
	HT capabilities:
		Capabilities: 0x0c
			HT20
			SM Power Save disabled
			No RX STBC
			Max AMSDU length: 3839 bytes
			No DSSS/CCK HT40
		Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
		Minimum RX AMPDU time spacing: 4 usec (0x05)
		HT RX MCS rate indexes supported: 0-15
		HT TX MCS rate indexes are undefined
	HT operation:
		 * primary channel: 11
		 * secondary channel offset: no secondary
		 * STA channel width: 20 MHz
		 * RIFS: 0
		 * HT protection: no
		 * non-GF present: 0
		 * OBSS non-GF present: 0
		 * dual beacon: 0
		 * dual CTS protection: 0
		 * STBC beacon: 0
		 * L-SIG TXOP Prot: 0
		 * PCO active: 0
		 * PCO phase: 0
	Secondary Channel Offset: no secondary (0)
	WPA:	 * Version: 1
		 * Group cipher: TKIP
		 * Pairwise ciphers: TKIP CCMP
		 * Authentication suites: PSK
	RSN:	 * Version: 1
		 * Group cipher: TKIP
		 * Pairwise ciphers: TKIP CCMP
		 * Authentication suites: PSK
		 * Capabilities: 1-PTKSA-RC 1-GTKSA-RC (0x0000)
	WMM:	 * Parameter version 1
		 * u-APSD
		 * BE: CW 15-1023, AIFSN 3
		 * BK: CW 15-1023, AIFSN 7
		 * VI: CW 7-15, AIFSN 2, TXOP 3008 usec
		 * VO: CW 3-7, AIFSN 2, TXOP 1504 usec
	BSS Load:
		 * station count: 0
		 * channel utilisation: 29/255
		 * available admission capacity: 31250 [*32us]
	Extended capabilities: HT Information Exchange Supported
	Country: US	Environment: Indoor/Outdoor
		Channels [1 - 11] @ 16 dBm
	WPS:	 * Version: 1.0
		 * Wi-Fi Protected Setup State: 2 (Configured)
		 * Response Type: 3 (AP)
		 * UUID: 28802880-2880-1880-a880-001dd5b53220
		 * Manufacturer: ARRIS
		 * Model: TG862G
		 * Model Number: RT2860
		 * Serial Number: 12345678
		 * Primary Device Type: 6-0050f204-1
		 * Device name: ARRIS TG862 Router
		 * Config methods: Label, Display, Keypad
		 * RF Bands: 0x1
		 * Unknown TLV (0x1049, 6 bytes): 00 37 2a 00 01 20

I did not see my 5GHz  access point in the scan output

Last edited by necbot (2014-07-02 09:52:33)

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#10 2014-07-02 22:23:19

necbot
Member
Registered: 2013-12-05
Posts: 59

Re: [SOLVED] Cannot see 5 GHz network

Okay, I fixed it.

My 5 GHz network was using channel 149 or 5745 MHz.  I noticed in the iw list readout (see my prior post) that 5745 MHz [149] is disabled.  My router allows me to switch to channel 48 or 5240 MHz so I switched to that and now I can see my 5 GHz network.  I'm wondering why this is disabled on my wifi card though.  This wifi card worked fine on my other computers when my router was on channel 149.  Can I somehow enable this channel?  Why was it disabled in the first place?

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#11 2014-07-03 02:40:49

ewaller
Administrator
From: Pasadena, CA
Registered: 2009-07-13
Posts: 20,210

Re: [SOLVED] Cannot see 5 GHz network

necbot wrote:

Okay, I fixed it.... Can I somehow enable this channel?  Why was it disabled in the first place?

Hi,

It has been an uber hectic day.  Sorry for not getting back earlier.   I still think it is a regulatory domain thing..  Take note of the example for setting it to the US of A.   BTW, enjoy your long weekend -- I know I will big_smile

Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
---
How to Ask Questions the Smart Way

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#12 2014-07-03 15:56:22

necbot
Member
Registered: 2013-12-05
Posts: 59

Re: [SOLVED] Cannot see 5 GHz network

No worries.  It was because of your advice I spotted that at all.  You're saying that the driver I'm using has these channels disabled by default for regulatory reasons, right?  I'm in the US so 5GHz 149 should be allowed...

https://en.wikipedia.org/wiki/List_of_WLAN_channels

Was my wifi driver compiled in another county?  Come to think of it, I never did change my pacman sources list to put US servers first.  I think the first server on my list is from the Netherlands.  Could my wifi card driver have been compiled in accordance with the laws in another country?

Last edited by necbot (2014-07-03 18:48:49)

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#13 2014-07-04 05:31:36

ewaller
Administrator
From: Pasadena, CA
Registered: 2009-07-13
Posts: 20,210

Re: [SOLVED] Cannot see 5 GHz network

The link in my post pointed to an article that advised how to set the regulatory domain to that of the US.  As root, try iw reg set US
Did you try that?

Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
---
How to Ask Questions the Smart Way

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