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#1 2015-04-28 20:16:35

sweisman
Member
Registered: 2008-05-20
Posts: 42

No 802.11a 5GHz visible

My notebook has 11a-capable Wifi but scanning only shows 2.4GHz networks. I have tried two different cards (AR5B225 and Intel 7260).

Is there something I need to do to see and join 5GHz networks?

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#2 2015-04-28 20:25:35

ewaller
Administrator
From: Pasadena, CA
Registered: 2009-07-13
Posts: 20,612

Re: No 802.11a 5GHz visible

A couple things.  Using the iw tool, check the capabilities of you hardware(or at least the capability that Linux thinks you have)
Have you set up the regulatory domain for your system?
What tools are you using?  Wifi-menu, iw scan, NetworkManager ?

Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
The shortest way to ruin a country is to give power to demagogues.— Dionysius of Halicarnassus
---
How to Ask Questions the Smart Way

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#3 2015-04-28 20:33:24

sweisman
Member
Registered: 2008-05-20
Posts: 42

Re: No 802.11a 5GHz visible

I am unable to set any regulatory domain, but I get this:

[root@gorilla:~]$ iw reg get
country 00: DFS-UNSET
        (2402 - 2472 @ 40), (6, 20), (N/A)
        (2457 - 2482 @ 40), (6, 20), (N/A), PASSIVE-SCAN
        (2474 - 2494 @ 20), (6, 20), (N/A), NO-OFDM, PASSIVE-SCAN
        (5170 - 5250 @ 160), (6, 20), (N/A), PASSIVE-SCAN
        (5250 - 5330 @ 160), (6, 20), (0 ms), DFS, PASSIVE-SCAN
        (5490 - 5730 @ 160), (6, 20), (0 ms), DFS, PASSIVE-SCAN

I am using ConnMan quite well otherwise. All 2.4GHz networks are found and associated with.

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#4 2015-04-28 20:42:26

ewaller
Administrator
From: Pasadena, CA
Registered: 2009-07-13
Posts: 20,612

Re: No 802.11a 5GHz visible

Just making sure you saw this

Have you installed crda and wireless-regdb ?  With country == 00, you may not get 5 GHz operation.  Where (approximately) in the world are you?

Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
The shortest way to ruin a country is to give power to demagogues.— Dionysius of Halicarnassus
---
How to Ask Questions the Smart Way

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#5 2015-04-28 20:55:38

sweisman
Member
Registered: 2008-05-20
Posts: 42

Re: No 802.11a 5GHz visible

Setting country to Israel gets me this:

[root@gorilla:~]$ iw reg get
country IL: DFS-ETSI
        (2402 - 2482 @ 40), (N/A, 20), (N/A)
        (5150 - 5250 @ 80), (N/A, 23), (N/A), NO-OUTDOOR
        (5250 - 5350 @ 80), (N/A, 23), (0 ms), NO-OUTDOOR, DFS

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#6 2015-04-28 20:59:00

ewaller
Administrator
From: Pasadena, CA
Registered: 2009-07-13
Posts: 20,612

Re: No 802.11a 5GHz visible

Any luck connecting now?  Do you know the frequency of the router to which you are connecting?
And, what tool where you using? (I think you missed that question)

Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
The shortest way to ruin a country is to give power to demagogues.— Dionysius of Halicarnassus
---
How to Ask Questions the Smart Way

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#7 2015-04-28 21:07:05

sweisman
Member
Registered: 2008-05-20
Posts: 42

Re: No 802.11a 5GHz visible

Currently channel 64.

I assume this is not normal behavior?

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#8 2015-04-28 21:12:18

ewaller
Administrator
From: Pasadena, CA
Registered: 2009-07-13
Posts: 20,612

Re: No 802.11a 5GHz visible

Channel 64 is 5320MHz,  That seems to be enabled for your card and country.
And, what tool are you using?

Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
The shortest way to ruin a country is to give power to demagogues.— Dionysius of Halicarnassus
---
How to Ask Questions the Smart Way

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#9 2015-04-29 04:05:40

sweisman
Member
Registered: 2008-05-20
Posts: 42

Re: No 802.11a 5GHz visible

I am using ConnMan. At the low level, iw. But neither iw nor wireless_tools sees the 11a networks.

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#10 2015-04-29 04:41:50

ewaller
Administrator
From: Pasadena, CA
Registered: 2009-07-13
Posts: 20,612

Re: No 802.11a 5GHz visible

Okay, I am now in front of my machine with a wireless card  -- sadly, my night is coming to a close.  I think your day is just starting smile.  Take a look at the following commands.  What does your machine report?   Also, I am a bit puzzled as to why you had to install the packages I pointed out in post #4;  This machine is a fresh install (about two weeks old); it had all of the requisite packages installed and I did not explicitly install them.  Any idea why they were not on your machine?

ewaller@turing ~/photos/Router [1]1001 %iw wlo1 info
Interface wlo1
	ifindex 3
	wdev 0x1
	addr 34:e6:ad:17:fe:53
	type managed
	wiphy 0
	channel 149 (5745 MHz), width: 40 MHz, center1: 5755 MHz
ewaller@turing ~/photos/Router 1002 %iw reg get
country US: DFS-FCC
	(2402 - 2472 @ 40), (N/A, 30), (N/A)
	(5170 - 5250 @ 80), (N/A, 17), (N/A)
	(5250 - 5330 @ 80), (N/A, 23), (0 ms), DFS
	(5490 - 5600 @ 80), (N/A, 23), (0 ms), DFS
	(5650 - 5710 @ 40), (N/A, 23), (0 ms), DFS
	(5735 - 5835 @ 80), (N/A, 30), (N/A)
	(57240 - 63720 @ 2160), (N/A, 40), (N/A)
ewaller@turing ~/photos/Router 1003 %sudo iw wlo1 scan 
[sudo] password for ewaller: 
BSS c4:3d:c7:5d:eb:8c(on wlo1) -- associated
	TSF: 168274870121 usec (1d, 22:44:34)
	freq: 5745
	beacon interval: 100 TUs
	capability: ESS Privacy (0x0011)
	signal: -59.00 dBm
	last seen: 0 ms ago
	Information elements from Probe Response frame:
	SSID: Woodlyn-hi
	Supported rates: 6.0* 9.0 12.0* 18.0 24.0* 36.0 48.0 54.0 
	RSN:	 * Version: 1
		 * Group cipher: TKIP
		 * Pairwise ciphers: CCMP TKIP
		 * Authentication suites: PSK
		 * Capabilities: 16-PTKSA-RC 1-GTKSA-RC (0x000c)
	HT capabilities:
		Capabilities: 0x87e
			HT20/HT40
			SM Power Save disabled
			RX Greenfield
			RX HT20 SGI
			RX HT40 SGI
			No RX STBC
			Max AMSDU length: 7935 bytes
			No 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, 32
		HT TX MCS rate indexes are undefined
	HT operation:
		 * primary channel: 149
		 * secondary channel offset: above
		 * STA channel width: any
		 * RIFS: 1
		 * HT protection: 20 MHz
		 * 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
		 * 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 10:0d:7f:9d:28:26(on wlo1)
	TSF: 12981272707478 usec (150d, 05:54:32)
	freq: 2412
	beacon interval: 200 TUs
	capability: ESS Privacy ShortSlotTime (0x0411)
	signal: -90.00 dBm
	last seen: 0 ms ago
	SSID: jands
	Supported rates: 1.0* 2.0* 5.5* 11.0* 18.0 24.0 36.0 54.0 
	DS Parameter set: channel 1
	ERP: <no flags>
	ERP D4.0: <no flags>
	RSN:	 * Version: 1
		 * Group cipher: CCMP
		 * Pairwise ciphers: CCMP
		 * Authentication suites: PSK
		 * Capabilities: 16-PTKSA-RC 1-GTKSA-RC (0x000c)
	Extended supported rates: 6.0 9.0 12.0 48.0 
	HT capabilities:
		Capabilities: 0x19fd
			RX LDPC
			HT20
			SM Power Save disabled
			RX Greenfield
			RX HT20 SGI
			RX HT40 SGI
			TX STBC
			RX STBC 1-stream
			Max AMSDU length: 7935 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: 0-23
		HT TX MCS rate indexes are undefined
	HT operation:
		 * primary channel: 1
		 * secondary channel offset: no secondary
		 * STA channel width: 20 MHz
		 * RIFS: 1
		 * HT protection: nonmember
		 * 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
	Overlapping BSS scan params:
		 * passive dwell: 20 TUs
		 * active dwell: 10 TUs
		 * channel width trigger scan interval: 300 s
		 * scan passive total per channel: 200 TUs
		 * scan active total per channel: 20 TUs
		 * BSS width channel transition delay factor: 5
		 * OBSS Scan Activity Threshold: 0.25 %
	Extended capabilities: HT Information Exchange Supported
	WPS:	 * Version: 1.0
		 * Wi-Fi Protected Setup State: 2 (Configured)
		 * Response Type: 3 (AP)
		 * UUID: 58f29403-aba9-a4ad-4828-77ea0574e03f
		 * Manufacturer: NETGEAR, Inc.
		 * Model: WNDR4500
		 * Model Number: WNDR4500
		 * Serial Number: 4536
		 * Primary Device Type: 6-0050f204-1
		 * Device name: WNDR4500
		 * Config methods: Label
		 * RF Bands: 0x3
		 * Unknown TLV (0x1049, 6 bytes): 00 37 2a 00 01 20
	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 6016 usec
		 * VO: CW 3-7, AIFSN 2, TXOP 3264 usec
BSS c4:3d:c7:5d:eb:8f(on wlo1)
	TSF: 6049518573596 usec (70d, 00:25:18)
	freq: 2412
	beacon interval: 100 TUs
	capability: ESS Privacy ShortSlotTime (0x0411)
	signal: -57.00 dBm
	last seen: 0 ms ago
	SSID: Woodlyn
	Supported rates: 1.0* 2.0* 5.5* 11.0* 18.0 24.0 36.0 54.0 
	DS Parameter set: channel 1
	ERP: Barker_Preamble_Mode
	ERP D4.0: Barker_Preamble_Mode
	RSN:	 * Version: 1
		 * Group cipher: TKIP
		 * Pairwise ciphers: CCMP TKIP
		 * Authentication suites: PSK
		 * Capabilities: 16-PTKSA-RC 1-GTKSA-RC (0x000c)
	Extended supported rates: 6.0 9.0 12.0 48.0 
	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
BSS 74:44:01:9d:bc:54(on wlo1)
	TSF: 290606718763 usec (3d, 08:43:26)
	freq: 2417
	beacon interval: 100 TUs
	capability: ESS Privacy ShortPreamble ShortSlotTime (0x0431)
	signal: -85.00 dBm
	last seen: 0 ms ago
	SSID: NETGEAR55
	Supported rates: 1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 
	DS Parameter set: channel 2
	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: 0x104c
			HT20
			SM Power Save disabled
			RX HT40 SGI
			No RX STBC
			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: 2
		 * 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
	Overlapping BSS scan params:
		 * passive dwell: 20 TUs
		 * active dwell: 10 TUs
		 * channel width trigger scan interval: 300 s
		 * scan passive total per channel: 200 TUs
		 * scan active total per channel: 20 TUs
		 * BSS width channel transition delay factor: 5
		 * OBSS Scan Activity Threshold: 0.25 %
	Extended capabilities: HT Information Exchange Supported
	WPS:	 * Version: 1.0
		 * Wi-Fi Protected Setup State: 2 (Configured)
		 * Response Type: 3 (AP)
		 * UUID: 00000000-0000-1000-0000-7444019dbc54
		 * Manufacturer: NTGR
		 * Model: wnr2000v3
		 * Model Number: n
		 * Serial Number: none
		 * Primary Device Type: 6-0050f204-1
		 * Device name: WNR2000v3(Wireless AP)
		 * Config methods: Ethernet, Label, PBC
		 * RF Bands: 0x3
BSS f0:92:1c:d9:d9:23(on wlo1)
	TSF: 12892982063 usec (0d, 03:34:52)
	freq: 2437
	beacon interval: 100 TUs
	capability: ESS Privacy ShortPreamble ShortSlotTime (0x0431)
	signal: -90.00 dBm
	last seen: 0 ms ago
	Information elements from Probe Response frame:
	SSID: HP-Print-23-Officejet 4630
	Supported rates: 1.0 2.0 5.5 6.0 9.0 11.0 12.0 18.0 
	DS Parameter set: channel 6
	ERP: <no flags>
	RSN:	 * Version: 1
		 * Group cipher: CCMP
		 * Pairwise ciphers: CCMP
		 * Authentication suites: PSK
		 * Capabilities: 1-PTKSA-RC 1-GTKSA-RC (0x0000)
	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
BSS dc:3a:5e:96:a8:05(on wlo1)
	TSF: 1847221350458 usec (21d, 09:07:01)
	freq: 5745
	beacon interval: 100 TUs
	capability: ESS Privacy SpectrumMgmt ShortSlotTime (0x0511)
	signal: -59.00 dBm
	last seen: 606 ms ago
	Information elements from Probe Response frame:
	SSID: \x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00
	Supported rates: 6.0* 9.0 12.0* 18.0 24.0* 36.0 48.0 54.0 
	TIM: DTIM Count 2 DTIM Period 3 Bitmap Control 0x0 Bitmap[0] 0x0
	Country: US	Environment: Indoor/Outdoor
		Channels [36 - 36] @ -128 dBm
		Channels [40 - 40] @ -128 dBm
		Channels [44 - 44] @ -128 dBm
		Channels [48 - 48] @ -128 dBm
		Channels [149 - 149] @ -128 dBm
		Channels [153 - 153] @ -128 dBm
		Channels [157 - 157] @ -128 dBm
		Channels [161 - 161] @ -128 dBm
		Channels [165 - 165] @ -128 dBm
	Power constraint: 0 dB
	TPC report: TX power: 15 dBm
	RSN:	 * Version: 1
		 * Group cipher: CCMP
		 * Pairwise ciphers: CCMP
		 * Authentication suites: PSK
		 * Capabilities: 4-PTKSA-RC 1-GTKSA-RC (0x0008)
	HT capabilities:
		Capabilities: 0x19bc
			HT20
			SM Power Save disabled
			RX Greenfield
			RX HT20 SGI
			TX STBC
			RX STBC 1-stream
			Max AMSDU length: 7935 bytes
			DSSS/CCK HT40
		Maximum RX AMPDU length 32767 bytes (exponent: 0x002)
		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: 149
		 * 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
	Extended capabilities: Extended Channel Switching, 6
	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
	WPS:	 * Version: 1.0
		 * Wi-Fi Protected Setup State: 2 (Configured)
		 * Unknown TLV (0x1049, 6 bytes): 00 37 2a 00 01 20
		 * Primary Device Type: 6-0050f204-1
		 * Device name: DIRECT-roku-030
	P2P:	 * Group capa: 0x27, Device capa: 0x2b
		 * Unknown TLV (0x03, 6 bytes): 3a 5e 96 a8 03 dd
ewaller@turing ~/photos/Router 1004 %

Edit:  I forgot to post the commands hmm
Edit: Stand by -- I am having so issues here.
Edit: Okay, I think I just remembered why I don't like Konsole.  Switched back to urxvt

Last edited by ewaller (2015-04-29 04:53:43)

Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
The shortest way to ruin a country is to give power to demagogues.— Dionysius of Halicarnassus
---
How to Ask Questions the Smart Way

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