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#1 2018-10-15 18:23:59

goakley
Member
Registered: 2013-02-21
Posts: 17
Website

Wireless Device Ignoring Channels

For reasons I cannot determine (no system upgrade, no config changes), my wireless device has stopped interacting with a large number of wireless channels, which makes me unable to connect to a number of wifi networks.  This is evident when attempting to authenticate with an endpoint by using wpa_supplicant, which gives the following debug output:

# wpa_supplicant -i wlp4s0 -c /etc/wpa_supplicant/pp.conf
...
P2P: Add operating class 81
P2P: Channels - hexdump(len=11): 01 02 03 04 05 06 07 08 09 0a 0b
P2P: Own listen channel: 81:6
P2P: Random operating channel: 81:11
P2P: initialized
P2P: channels: 81:1,2,3,4,5,6,7,8,9,10,11

Booting off of a live cd onto the same hardware, however, allows for successful iteration over all channels and allows for connection to the networks I otherwise can no longer access.  The following is output from the live cd using wpa_supplicant with the exact same configuration:

# wpa_supplicant -i wlp4s0 -c /etc/wpa_supplicant/pp.conf
...
P2P: Add operating class 81
P2P: Channels - hexdump(len=13): 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d
P2P: Add operating class 115
P2P: Channels - hexdump(len=4): 24 28 2c 30
P2P: Add operating class 116
P2P: Channels - hexdump(len=2): 24 2c
P2P: Add operating class 117
P2P: Channels - hexdump(len=2): 28 30
P2P: Add operating class 124
P2P: Channels - hexdump(len=4): 95 99 9d a1
P2P: Add operating class 125
P2P: Channels - hexdump(len=5): 95 99 9d a1 a5
P2P: Add operating class 126
P2P: Channels - hexdump(len=2): 95 9d
P2P: Add operating class 127
P2P: Channels - hexdump(len=2): 99 a1
P2P: Add operating class 128
P2P: Channels - hexdump(len=4): 24 28 2c 30
P2P: Add operating class 130
P2P: Channels - hexdump(len=4): 24 28 2c 30
P2P: Own listen channel: 81:1
P2P: Random operating channel: 81:11
P2P: initialized
P2P: channels: 81:1,2,3,4,5,6,7,8,9,10,11,12,13 115:36,40,44,48 116:36,44 117:40,48 124:149,153,157,161 125:149,153,157,161,165 126:149,157 127:153,161 128:36,40,44,48 130:36,40,44,48

I have struggled through many different help topics to try to debug this, but I cannot figure out why my installation will not attempt to scan all channels for wifi networks.  Does anyone know why this might be happening, and how I can my installation to scan on all channels?

\o/

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#2 2018-10-15 19:13:22

Slithery
Administrator
From: Norfolk, UK
Registered: 2013-12-01
Posts: 5,776

Re: Wireless Device Ignoring Channels

This may give some clues.

Although I'm not sure how any of that could change without either your input or a driver/firmware update.

No, it didn't "fix" anything. It just shifted the brokeness one space to the right. - jasonwryan
Closing -- for deletion; Banning -- for muppetry. - jasonwryan

aur - dotfiles

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#3 2018-10-15 20:44:22

goakley
Member
Registered: 2013-02-21
Posts: 17
Website

Re: Wireless Device Ignoring Channels

Thank you for the feedback!  After reading through that page, I have noticed a strange issue with the regulatory domain on my laptop installation.

After starting wpa_supplicant, when I run `iw reg get` on my laptop installation, I am shown a physical device with an unset country code (in addition to the correctly-set global country code):

global
country US: DFS-FCC
	(2402 - 2472 @ 40), (N/A, 30), (N/A)
	(5170 - 5250 @ 80), (N/A, 23), (N/A), AUTO-BW
	(5250 - 5330 @ 80), (N/A, 23), (0 ms), DFS, AUTO-BW
	(5490 - 5730 @ 160), (N/A, 23), (0 ms), DFS
	(5735 - 5835 @ 80), (N/A, 30), (N/A)
	(57240 - 63720 @ 2160), (N/A, 40), (N/A)

phy#0 (self-managed)
country 00: DFS-UNSET
	(2402 - 2437 @ 40), (6, 22), (N/A), AUTO-BW, NO-HT40MINUS, NO-80MHZ, NO-160MHZ
	(2422 - 2462 @ 40), (6, 22), (N/A), AUTO-BW, NO-80MHZ, NO-160MHZ
	(2447 - 2482 @ 40), (6, 22), (N/A), AUTO-BW, NO-HT40PLUS, NO-80MHZ, NO-160MHZ
	(5170 - 5190 @ 80), (6, 22), (N/A), NO-OUTDOOR, AUTO-BW, IR-CONCURRENT, NO-HT40MINUS, NO-160MHZ, PASSIVE-SCAN
	(5190 - 5210 @ 80), (6, 22), (N/A), NO-OUTDOOR, AUTO-BW, IR-CONCURRENT, NO-HT40PLUS, NO-160MHZ, PASSIVE-SCAN
	(5210 - 5230 @ 80), (6, 22), (N/A), NO-OUTDOOR, AUTO-BW, IR-CONCURRENT, NO-HT40MINUS, NO-160MHZ, PASSIVE-SCAN
	(5230 - 5250 @ 80), (6, 22), (N/A), NO-OUTDOOR, AUTO-BW, IR-CONCURRENT, NO-HT40PLUS, NO-160MHZ, PASSIVE-SCAN
	(5250 - 5270 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40MINUS, NO-160MHZ, PASSIVE-SCAN
	(5270 - 5290 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40PLUS, NO-160MHZ, PASSIVE-SCAN
	(5290 - 5310 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40MINUS, NO-160MHZ, PASSIVE-SCAN
	(5310 - 5330 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40PLUS, NO-160MHZ, PASSIVE-SCAN
	(5490 - 5510 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40MINUS, NO-160MHZ, PASSIVE-SCAN
	(5510 - 5530 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40PLUS, NO-160MHZ, PASSIVE-SCAN
	(5530 - 5550 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40MINUS, NO-160MHZ, PASSIVE-SCAN
	(5550 - 5570 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40PLUS, NO-160MHZ, PASSIVE-SCAN
	(5570 - 5590 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40MINUS, NO-160MHZ, PASSIVE-SCAN
	(5590 - 5610 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40PLUS, NO-160MHZ, PASSIVE-SCAN
	(5610 - 5630 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40MINUS, NO-160MHZ, PASSIVE-SCAN
	(5630 - 5650 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40PLUS, NO-160MHZ, PASSIVE-SCAN
	(5650 - 5670 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40MINUS, NO-160MHZ, PASSIVE-SCAN
	(5670 - 5690 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40PLUS, NO-160MHZ, PASSIVE-SCAN
	(5690 - 5710 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40MINUS, NO-160MHZ, PASSIVE-SCAN
	(5710 - 5730 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40PLUS, NO-160MHZ, PASSIVE-SCAN
	(5735 - 5755 @ 80), (6, 22), (N/A), AUTO-BW, IR-CONCURRENT, NO-HT40MINUS, NO-160MHZ, PASSIVE-SCAN
	(5755 - 5775 @ 80), (6, 22), (N/A), AUTO-BW, IR-CONCURRENT, NO-HT40PLUS, NO-160MHZ, PASSIVE-SCAN
	(5775 - 5795 @ 80), (6, 22), (N/A), AUTO-BW, IR-CONCURRENT, NO-HT40MINUS, NO-160MHZ, PASSIVE-SCAN
	(5795 - 5815 @ 80), (6, 22), (N/A), AUTO-BW, IR-CONCURRENT, NO-HT40PLUS, NO-160MHZ, PASSIVE-SCAN
	(5815 - 5835 @ 20), (6, 22), (N/A), AUTO-BW, IR-CONCURRENT, NO-HT40MINUS, NO-HT40PLUS, NO-80MHZ, NO-160MHZ, PASSIVE-SCAN

However, when booting on a live cd, I am shown what appears to be a more correct configuration, with the country code assigned to the physical device itself:

global
country 00: DFS-UNSET
	(2402 - 2472 @ 40), (N/A, 20), (N/A)
	(2457 - 2482 @ 20), (N/A, 20), (N/A), AUTO-BW, NO-IR
	(2474 - 2494 @ 20), (N/A, 20), (N/A), NO-OFDM, NO-IR
	(5170 - 5250 @ 80), (N/A, 20), (N/A), AUTO-BW, NO-IR
	(5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, AUTO-BW, NO-IR
	(5490 - 5730 @ 160), (N/A, 20), (0 ms), DFS, NO-IR
	(5735 - 5835 @ 80), (N/A, 20), (N/A), NO-IR
	(57240 - 63720 @ 2160), (N/A, 0), (N/A)

phy#0 (self-managed)
country US: DFS-UNSET
	(2402 - 2482 @ 40), (6, 22), (N/A), AUTO-BW, NO-HT40PLUS, NO-80MHZ, NO-160MHZ
	(5170 - 5250 @ 80), (6, 22), (N/A), AUTO-BW, NO-HT40PLUS, NO-160MHZ
	(5250 - 5330 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40PLUS, NO-160MHZ, PASSIVE-SCAN
	(5490 - 5730 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40PLUS, NO-160MHZ, PASSIVE-SCAN
	(5735 - 5815 @ 80), (6, 22), (N/A), AUTO-BW, NO-HT40PLUS, NO-160MHZ
	(5815 - 5835 @ 20), (6, 22), (N/A), AUTO-BW, NO-HT40MINUS, NO-HT40PLUS, NO-80MHZ, NO-160MHZ

I am not sure why, on the live cd, the phy#0 is country US, but on the laptop install phy#0 is country US.  I also cannot figure out a way to set the country of phy#0, but I am assuming this is the source of the problem.  Has anyone seen this before?

\o/

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