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#1 2019-10-10 10:17:19

ivdok
Member
From: Abu Dhabi
Registered: 2013-07-17
Posts: 60

iwlwifi + Wireless-AC 7260 = no WiFi

Xfce 4.14, linux-firmware-20190923.417a9c6-1, networkmanager-1.20.4-1, wpa_supplicant-2:2.9-1, linux-5.3.5.arch1-1, all on Thinkpad T440s. Config that previously worked flawlessly until reinstallation has ceased to function, and neither wpa_supplicant nor NetworkManager can connect or even scan radios in the vicinity.

Dmesg:

[root@ThinkPad-t440s ~]# dmesg | grep -i iwl
[   19.118138] iwlwifi 0000:03:00.0: loaded firmware version 17.3216344376.0 op_mode iwlmvm
[   19.518134] iwlwifi 0000:03:00.0: Detected Intel(R) Dual Band Wireless AC 7260, REV=0x144
[   19.541566] iwlwifi 0000:03:00.0: base HW address: cc:3d:82:12:14:9d
[   19.746397] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
[   19.758023] iwlwifi 0000:03:00.0 wlp3s0: renamed from wlan0

Rfkill:

ID TYPE      DEVICE                   SOFT      HARD
 0 bluetooth tpacpi_bluetooth_sw unblocked unblocked
 1 bluetooth hci0                unblocked unblocked
 2 wlan      phy0                unblocked unblocked

That's strange, but iw dev wlp3s0 scan does show APs nearby, which rules out h/w malfunction:

BSS b0:4e:26:XX:XX:XX(on wlp3s0)
	last seen: 10697.106s [boottime]
	TSF: 5338781678406 usec (61d, 18:59:41)
	freq: 2412
	beacon interval: 100 TUs
	capability: ESS Privacy ShortSlotTime (0x0411)
	signal: -69.00 dBm
	last seen: 2347 ms ago
	Information elements from Probe Response frame:
	SSID: *REDACTED*
	Supported rates: 1.0* 2.0* 5.5* 11.0* 9.0 18.0 36.0 54.0 
	DS Parameter set: channel 1
	ERP: Barker_Preamble_Mode
	Extended supported rates: 6.0 12.0 24.0 48.0 
	HT capabilities:
		Capabilities: 0x106e
			HT20/HT40
			SM Power Save disabled
			RX HT20 SGI
			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: 4 usec (0x05)
		HT RX MCS rate indexes supported: 0-15, 32
		HT TX MCS rate indexes are undefined
	HT operation:
		 * primary channel: 1
		 * secondary channel offset: above
		 * STA channel width: any
		 * RIFS: 0
		 * HT protection: 20 MHz
		 * non-GF present: 1
		 * 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
	RSN:	 * Version: 1
		 * Group cipher: CCMP
		 * Pairwise ciphers: CCMP
		 * Authentication suites: PSK
		 * Capabilities: 1-PTKSA-RC 1-GTKSA-RC (0x0000)
	Extended capabilities:
	BSS Load:
		 * station count: 3
		 * channel utilisation: 0/255
		 * available admission capacity: 31250 [*32us]
	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
	Overlapping BSS scan params:
		 * passive dwell: 20 TUs
		 * active dwell: 10 TUs
		 * channel width trigger scan interval: 180 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 %
	WPS:	 * Version: 1.0
		 * Wi-Fi Protected Setup State: 2 (Configured)
		 * Response Type: 3 (AP)
		 * UUID: 38833092-3092-1883-9c77-b04e26b6d8c4
		 * Manufacturer: TP-Link
		 * Model: TL-WR840N
		 * Model Number: 5.0
		 * Serial Number: 1.0
		 * Primary Device Type: 6-0050f204-1
		 * Device name: Wireless N Router TL-WR840N
		 * Config methods: Label, Display, Keypad
		 * RF Bands: 0x1
		 * Unknown TLV (0x1049, 6 bytes): 00 37 2a 00 01 20

nmcli:

wlp3s0: unavailable
        "Intel 7260"
        wifi (iwlwifi), CC:3D:82:XX:XX:XX, hw, mtu 1500

mkinitcpio (condensed):

MODULES=(kvmgt vfio-iommu-type1 vfio-mdev)
BINARIES=()
FILES=()
HOOKS=(base systemd keyboard autodetect sd-vconsole modconf block sd-encrypt sd-lvm2 filesystems fsck)

ip a:

...
2: enp0s25: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 68:f7:28:XX:XX:XX brd ff:ff:ff:ff:ff:ff
    inet 172.16.2.35/24 brd 172.16.2.255 scope global dynamic noprefixroute enp0s25
       valid_lft 84161sec preferred_lft 84161sec
    inet6 fe80::a3ee:8621:3c0e:dd98/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever
3: wlp3s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
    link/ether cc:3d:82:XX:XX:XX brd ff:ff:ff:ff:ff:ff
4: virbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 9e:56:a0:69:5e:6b brd ff:ff:ff:ff:ff:ff
    inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
       valid_lft forever preferred_lft forever
5: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc fq_codel master virbr0 state DOWN group default qlen 1000
    link/ether 52:54:00:ad:aa:64 brd ff:ff:ff:ff:ff:ff
6: vnet0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel master virbr0 state UNKNOWN group default qlen 1000
    link/ether fe:54:00:74:f3:d9 brd ff:ff:ff:ff:ff:ff
    inet6 fe80::fc54:ff:fe74:f3d9/64 scope link 
       valid_lft forever preferred_lft forever

Last edited by ivdok (2019-10-10 10:19:24)

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#2 2019-10-10 12:00:37

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 24,009

Re: iwlwifi + Wireless-AC 7260 = no WiFi

There are no error messages in any of these outputs. What actually happens when you "can't connect with either wpa_supplicant or NetworkManager"? Actually attempt to do so and post relevant log outputs.

Last edited by V1del (2019-10-10 12:01:03)

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#3 2019-10-10 12:31:25

ivdok
Member
From: Abu Dhabi
Registered: 2013-07-17
Posts: 60

Re: iwlwifi + Wireless-AC 7260 = no WiFi

V1del wrote:

There are no error messages in any of these outputs. What actually happens when you "can't connect with either wpa_supplicant or NetworkManager"? Actually attempt to do so and post relevant log outputs.

NetworkManager applet shows that "device is not ready", and supplicant "Could not connect to wpa_supplicant: wlp3s0 - re-trying". If there were any meaningful logs, I'd post them, like I did with other commands. Don't just assume I didn't try to resolve this by myself.

Last edited by ivdok (2019-10-10 12:32:04)

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#4 2019-10-10 13:27:15

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 24,009

Re: iwlwifi + Wireless-AC 7260 = no WiFi

I'm not assuming anything, none of the outputs show any attempts of a connection being made.

You have a few virtual bridges there, how are they configured? It's likely you are masking access to the actual device.

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#5 2019-10-10 15:02:52

seth
Member
Registered: 2012-09-03
Posts: 61,157

Re: iwlwifi + Wireless-AC 7260 = no WiFi

The interface is brought up by something (but doesn't get associated) - I suspect multiple services accessing it.

systemctl list-unit-files --state=enabled

Ideally post a complete system journal covering an attempt to control the NIC. If you didn't stop NM before trying wpa_supplicant directly, you did it wrong. If there's a dhcpcd process, that's likely the cause. (Yes, I'm assuming here - because atm. that's all we can do)

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