[SOLVED] Regulatory domains on 5 GHz frequencies / crda error -7

scrouthtv · 2019-10-15 16:42:59

For me (Arch) and a friend of mine (Manjaro - I know, wrong forum; just ignore him) all the 5 GHz frequencies were disabled since installation of the OS.

We live in Germany and bought our pcs legally here, so the WiFi card should be able to use at least some 5 GHz frequencies.

Current situation:

 ~ iw list | grep Frequencies -A 24
 [...]
		Frequencies:
			* 5180 MHz [36] (15.0 dBm) (no IR)
			* 5200 MHz [40] (15.0 dBm) (no IR)
			* 5220 MHz [44] (15.0 dBm) (no IR)
			* 5240 MHz [48] (15.0 dBm) (no IR)
			* 5260 MHz [52] (15.0 dBm) (no IR, radar detection)
			* 5280 MHz [56] (15.0 dBm) (no IR, radar detection)
			* 5300 MHz [60] (15.0 dBm) (no IR, radar detection)
			* 5320 MHz [64] (15.0 dBm) (no IR, radar detection)
			* 5500 MHz [100] (15.0 dBm) (no IR, radar detection)
			* 5520 MHz [104] (15.0 dBm) (no IR, radar detection)
			* 5540 MHz [108] (15.0 dBm) (no IR, radar detection)
			* 5560 MHz [112] (15.0 dBm) (no IR, radar detection)
			* 5580 MHz [116] (15.0 dBm) (no IR, radar detection)
			* 5600 MHz [120] (15.0 dBm) (no IR, radar detection)
			* 5620 MHz [124] (15.0 dBm) (no IR, radar detection)
			* 5640 MHz [128] (15.0 dBm) (no IR, radar detection)
			* 5660 MHz [132] (15.0 dBm) (no IR, radar detection)
			* 5680 MHz [136] (15.0 dBm) (no IR, radar detection)
			* 5700 MHz [140] (15.0 dBm) (no IR, radar detection)
			* 5745 MHz [149] (13.0 dBm) (no IR)
			* 5765 MHz [153] (13.0 dBm) (no IR)
			* 5785 MHz [157] (13.0 dBm) (no IR)
			* 5805 MHz [161] (13.0 dBm) (no IR)
			* 5825 MHz [165] (13.0 dBm) (no IR)
 
 ~ iw reg get
global
country DE: DFS-ETSI
	(2400 - 2483 @ 40), (N/A, 20), (N/A)
	(5150 - 5250 @ 80), (N/A, 23), (N/A), NO-OUTDOOR, AUTO-BW
	(5250 - 5350 @ 80), (N/A, 20), (0 ms), NO-OUTDOOR, DFS, AUTO-BW
	(5470 - 5725 @ 160), (N/A, 26), (0 ms), DFS
	(5725 - 5875 @ 80), (N/A, 13), (N/A)
	(57000 - 66000 @ 2160), (N/A, 40), (N/A)

It wouldn't be that bad to not use 5 GHz at all, **but** his link speed peaks at 1 Mbps and my network manager occasionally switches to the 5 GHz variant of networks and the connection crashes (can't ping broadcast / gateway / anything).

For the both of us, cfg80211 seems to be installed properly and loaded:

 - /etc/modprobe.d/iwlwifi.conf - 
options cfg80211 ieee80211_regdom=DE
 - /etc/conf.d/wireless-regdom - 
WIRELESS_REGDOM="DE"

Then I tried installing crda & setting the reg domain using it:

 # COUNTRY=DE crda
Failed to set regulatory domain: -7

How do I properly configure the reg domain? Or is there any possibility to completely disable 5 GHz so I don't have to bother with reconnecting to the WiFi every minute or so?

Thanks for the help in advance.

Last edited by scrouthtv (2019-10-15 17:08:34)

scrouthtv · 2019-10-15 17:07:54

Because this looks like the regulatory domain is correctly set & everything should be working, I researched a bit more, and got the 5 GHz band to work for myself using dhcpcd instead of dhclient.

There is a setting in wicd under External programs > Automatic (recommended) which I had switched to dhclient.

Nevertheless, I don't get why iw says that no 5 GHz frequency is allowed, although I can connect & use 5 GHz frequencies.

Last edited by scrouthtv (2019-10-15 17:08:03)

progandy · 2019-10-15 17:18:33

iw reg get doesn't say no frequencies allowed. I believe N/A only means that there are no restrictions stored in this field.
Edit: https://superuser.com/questions/1326408 … et-command

(5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS
(  5250    -     5330  @       80      ), (       N/A,            20   ), (    0 ms     ), DFS
($min_freq - $max_freq @ $max_bandwidth), ($max_antenna_gain, $max_eirp), ($DFS_CAC_time), $restriction_flags

Edit: crda won't work since you use the modprobe.d option to force a regdom.

Last edited by progandy (2019-10-15 17:24:29)

scrouthtv · 2019-10-15 17:26:06

Yeah but from what I can tell the No IR flag in iw list means that those frequencies are not allowed:

 ~ iw list | grep Frequencies -A 24
 [...]
		Frequencies:
			* 5180 MHz [36] (15.0 dBm) (no IR)
			* 5200 MHz [40] (15.0 dBm) (no IR)
[...]

progandy · 2019-10-15 17:32:48

That means that access point or P2P usage is forbidden, but connecting as a client works. Intel likes to disable 5G access point support on their consumer cards. The status "disabled" would block everything.

http://pisarenko.net/blog/2015/05/05/up … 1ac-guide/
“no IR” stands for “no initiate radiation”. It essentially means that the card cannot be used as an access point on that frequency. However, when “no IR” goes in hand with “radar detection” it means that the card can be used but only with DFS. It’s another reminder that DFS is required.

Arch Linux

#1 2019-10-15 16:42:59

[SOLVED] Regulatory domains on 5 GHz frequencies / crda error -7

#2 2019-10-15 17:07:54

Re: [SOLVED] Regulatory domains on 5 GHz frequencies / crda error -7

#3 2019-10-15 17:18:33

Re: [SOLVED] Regulatory domains on 5 GHz frequencies / crda error -7

#4 2019-10-15 17:26:06

Re: [SOLVED] Regulatory domains on 5 GHz frequencies / crda error -7

#5 2019-10-15 17:32:48

Re: [SOLVED] Regulatory domains on 5 GHz frequencies / crda error -7

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