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#1 2020-06-29 09:38:33
- DCx86
- Member
- From: Uppsala
- Registered: 2018-02-20
- Posts: 47
[SOLVED] Wifi-menu invalid interface specification via usb wifi dongle
I have been using internet via same usb wifi dongle (TL-WN722N) for few months now, but strangely one day it stopped working.
Not sure what is going on here. Any help would be much appreciated. Thanks!
$ wifi-menu
Invalid interface specification
Usage: wifi-menu [-h | --help] [-o | --obscure] [INTERFACE]
Interactively connect to a wireless network on INTERFACE using netctl.
If only one wireless interface is available, INTERFACE can be omitted.
...The usb network adapter is visible:
$ lsusb
Bus 002 Device 003: ID 0cf3:9271 Qualcomm Atheros Communications AR9271 802.11n
...The wifi interface is not visible:
$ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: enp3s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN mode DEFAULT group default qlen 1000
link/ether 80:ee:73:95:d0:49 brd ff:ff:ff:ff:ff:ff
3: enp4s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000
link/ether 80:ee:73:95:d0:48 brd ff:ff:ff:ff:ff:ffdmesg:
$ dmesg
[ 2384.924811] usb 2-1: New USB device found, idVendor=0cf3, idProduct=9271, bcdDevice= 1.08
[ 2384.924818] usb 2-1: New USB device strings: Mfr=16, Product=32, SerialNumber=48
[ 2384.924822] usb 2-1: Product: USB2.0 WLAN
[ 2384.924825] usb 2-1: Manufacturer: ATHEROS
[ 2384.924827] usb 2-1: SerialNumber: 12345Last edited by DCx86 (2020-06-29 12:53:41)
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#2 2020-06-29 09:41:32
- schard
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- From: Hannover
- Registered: 2016-05-06
- Posts: 2,111
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Re: [SOLVED] Wifi-menu invalid interface specification via usb wifi dongle
Please provide
# pacman -Q linux
# pacman -Q linux-firmware
# uname -r
# systemctl list-unit-files --state=static,enabled,transientInofficial first vice president of the Rust Evangelism Strike Force
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#3 2020-06-29 09:55:29
- DCx86
- Member
- From: Uppsala
- Registered: 2018-02-20
- Posts: 47
Re: [SOLVED] Wifi-menu invalid interface specification via usb wifi dongle
pacman -Q linux:
linux 5.7.6.arch1-1pacman -Q linux-firmware:
linux-firmware 20200519.8ba6fa6-1uname -r:
5.7.4-arch1-1systemctl list-unit-files --state=static,enabled,transient:
UNIT FILE STATE VENDOR PRESET
proc-sys-fs-binfmt_misc.automount static disabled
dev-hugepages.mount static disabled
dev-mqueue.mount static disabled
sys-fs-fuse-connections.mount static disabled
sys-kernel-config.mount static disabled
sys-kernel-debug.mount static disabled
sys-kernel-tracing.mount static disabled
tmp.mount static disabled
var-lib-machines.mount static disabled
systemd-ask-password-console.path static disabled
systemd-ask-password-wall.path static disabled
session-1.scope transient disabled
alsa-restore.service static disabled
alsa-state.service static disabled
autovt@.service enabled disabled
colord.service static disabled
container-getty@.service static disabled
dbus-org.freedesktop.hostname1.service static disabled
dbus-org.freedesktop.import1.service static disabled
dbus-org.freedesktop.locale1.service static disabled
dbus-org.freedesktop.login1.service static disabled
dbus-org.freedesktop.machine1.service static disabled
dbus-org.freedesktop.portable1.service static disabled
dbus-org.freedesktop.timedate1.service static disabled
dbus.service static disabled
dm-event.service static disabled
e2scrub@.service static disabled
e2scrub_all.service static disabled
e2scrub_fail@.service static disabled
emergency.service static disabled
fstrim.service static disabled
getty@.service enabled enabled
git-daemon@.service static disabled
initrd-cleanup.service static disabled
initrd-parse-etc.service static disabled
initrd-switch-root.service static disabled
initrd-udevadm-cleanup-db.service static disabled
kmod-static-nodes.service static disabled
krb5-kpropd@.service static disabled
ldconfig.service static disabled
lvm2-lvmetad.service static disabled
lvm2-lvmpolld.service static disabled
lvm2-monitor.service static disabled
lvm2-pvscan@.service static disabled
man-db.service static disabled
mkinitcpio-generate-shutdown-ramfs.service static disabled
modprobe@.service static disabled
netctl@.service static disabled
paccache.service static disabled
polkit.service static disabled
quotaon.service static disabled
rescue.service static disabled
rlogin@.service static disabled
rsh@.service static disabled
rsyncd@.service static disabled
shadow.service static disabled
sshdgenkeys.service static disabled
system-update-cleanup.service static disabled
systemd-ask-password-console.service static disabled
systemd-ask-password-wall.service static disabled
systemd-backlight@.service static disabled
systemd-binfmt.service static disabled
systemd-bless-boot.service static disabled
systemd-boot-system-token.service static disabled
systemd-coredump@.service static disabled
systemd-exit.service static disabled
systemd-firstboot.service static disabled
systemd-fsck@.service static disabled
systemd-halt.service static disabled
systemd-hibernate-resume@.service static disabled
systemd-hibernate.service static disabled
systemd-hostnamed.service static disabled
systemd-hwdb-update.service static disabled
systemd-hybrid-sleep.service static disabled
systemd-importd.service static disabled
systemd-initctl.service static disabled
systemd-journal-catalog-update.service static disabled
systemd-journal-flush.service static disabled
systemd-journald.service static disabled
systemd-journald@.service static disabled
systemd-kexec.service static disabled
systemd-localed.service static disabled
systemd-logind.service static disabled
systemd-machine-id-commit.service static disabled
systemd-machined.service static disabled
systemd-modules-load.service static disabled
systemd-portabled.service static disabled
systemd-poweroff.service static disabled
systemd-quotacheck.service static disabled
systemd-random-seed.service static disabled
systemd-reboot.service static disabled
systemd-rfkill.service static disabled
systemd-suspend-then-hibernate.service static disabled
systemd-suspend.service static disabled
systemd-sysctl.service static disabled
systemd-sysusers.service static disabled
systemd-timedated.service static disabled
systemd-tmpfiles-clean.service static disabled
systemd-tmpfiles-setup-dev.service static disabled
systemd-tmpfiles-setup.service static disabled
systemd-udev-settle.service static disabled
systemd-udev-trigger.service static disabled
systemd-udevd.service static disabled
systemd-update-done.service static disabled
systemd-update-utmp.service static disabled
systemd-user-sessions.service static disabled
systemd-vconsole-setup.service static disabled
systemd-volatile-root.service static disabled
telnet@.service static disabled
trezord.service enabled disabled
user-runtime-dir@.service static disabled
user@.service static disabled
machine.slice static disabled
system-systemd\x2dcryptsetup.slice static disabled
user.slice static disabled
dbus.socket static disabled
dm-event.socket static disabled
lvm2-lvmetad.socket static disabled
lvm2-lvmpolld.socket static disabled
syslog.socket static disabled
systemd-coredump.socket static disabled
systemd-initctl.socket static disabled
systemd-journald-audit.socket static disabled
systemd-journald-dev-log.socket static disabled
systemd-journald-varlink@.socket static disabled
systemd-journald.socket static disabled
systemd-journald@.socket static disabled
systemd-rfkill.socket static disabled
systemd-udevd-control.socket static disabled
systemd-udevd-kernel.socket static disabled
basic.target static disabled
blockdev@.target static disabled
bluetooth.target static disabled
boot-complete.target static disabled
cryptsetup-pre.target static disabled
cryptsetup.target static disabled
default.target static disabled
emergency.target static disabled
final.target static disabled
getty-pre.target static disabled
getty.target static disabled
graphical.target static disabled
hibernate.target static disabled
hybrid-sleep.target static disabled
initrd-fs.target static disabled
initrd-root-device.target static disabled
initrd-root-fs.target static disabled
initrd-switch-root.target static disabled
initrd.target static disabled
local-fs-pre.target static disabled
local-fs.target static disabled
multi-user.target static disabled
network-online.target static disabled
network-pre.target static disabled
network.target static disabled
nss-lookup.target static disabled
nss-user-lookup.target static disabled
paths.target static disabled
printer.target static disabled
remote-fs-pre.target static disabled
remote-fs.target enabled enabled
rescue.target static disabled
rpcbind.target static disabled
runlevel1.target static disabled
runlevel2.target static disabled
runlevel3.target static disabled
runlevel4.target static disabled
runlevel5.target static disabled
shutdown.target static disabled
sigpwr.target static disabled
sleep.target static disabled
slices.target static disabled
smartcard.target static disabled
sockets.target static disabled
sound.target static disabled
suspend-then-hibernate.target static disabled
suspend.target static disabled
swap.target static disabled
sysinit.target static disabled
system-update-pre.target static disabled
system-update.target static disabled
time-set.target static disabled
time-sync.target static disabled
timers.target static disabled
umount.target static disabled
shadow.timer static disabled
systemd-tmpfiles-clean.timer static disabled
187 unit files listed.Offline
#4 2020-06-29 10:07:35
- schard
- Forum Moderator
- From: Hannover
- Registered: 2016-05-06
- Posts: 2,111
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Re: [SOLVED] Wifi-menu invalid interface specification via usb wifi dongle
Reboot to the new kernel, so that the driver module can load.
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#5 2020-06-29 10:28:57
- DCx86
- Member
- From: Uppsala
- Registered: 2018-02-20
- Posts: 47
Re: [SOLVED] Wifi-menu invalid interface specification via usb wifi dongle
Thank you @schard for your help, unfortunately rebooting didn't fix it. 
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#6 2020-06-29 10:33:02
- schard
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- From: Hannover
- Registered: 2016-05-06
- Posts: 2,111
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Re: [SOLVED] Wifi-menu invalid interface specification via usb wifi dongle
What's the output of
# uname -r
# ip link shownow?
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#7 2020-06-29 11:06:22
- DCx86
- Member
- From: Uppsala
- Registered: 2018-02-20
- Posts: 47
Re: [SOLVED] Wifi-menu invalid interface specification via usb wifi dongle
uname -r:
5.7.6-arch1-1ip link show:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: enp3s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN mode DEFAULT group default qlen 1000
link/ether 80:ee:73:95:d0:49 brd ff:ff:ff:ff:ff:ff
3: enp4s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000
link/ether 80:ee:73:95:d0:48 brd ff:ff:ff:ff:ff:ffOffline
#8 2020-06-29 11:07:02
- DCx86
- Member
- From: Uppsala
- Registered: 2018-02-20
- Posts: 47
Re: [SOLVED] Wifi-menu invalid interface specification via usb wifi dongle
Can it be a hardware problem with the dongle?
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#9 2020-06-29 11:11:44
- schard
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- From: Hannover
- Registered: 2016-05-06
- Posts: 2,111
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Re: [SOLVED] Wifi-menu invalid interface specification via usb wifi dongle
That's not impossible, though I'd want to rule out a software error first.
What's the output of
# lsusb -vwith regards to the WiFi dongle?
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#10 2020-06-29 11:19:38
- loqs
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- Registered: 2014-03-06
- Posts: 18,045
Re: [SOLVED] Wifi-menu invalid interface specification via usb wifi dongle
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#11 2020-06-29 11:34:21
- Awebb
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- Registered: 2010-05-06
- Posts: 6,602
Re: [SOLVED] Wifi-menu invalid interface specification via usb wifi dongle
They've fixed the protection fault, alright.
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#12 2020-06-29 11:38:41
- schard
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- From: Hannover
- Registered: 2016-05-06
- Posts: 2,111
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Re: [SOLVED] Wifi-menu invalid interface specification via usb wifi dongle
It's not a bug, it's a feature.
@OP: Does a downgrade to a kernel version of 5.7.2 or lower solve this issue?
Last edited by schard (2020-06-29 11:39:23)
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#13 2020-06-29 11:42:28
- DCx86
- Member
- From: Uppsala
- Registered: 2018-02-20
- Posts: 47
Re: [SOLVED] Wifi-menu invalid interface specification via usb wifi dongle
lsusb -v:
Bus 002 Device 002: ID 0cf3:9271 Qualcomm Atheros Communications AR9271 802.11n
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 255 Vendor Specific Class
bDeviceSubClass 255 Vendor Specific Subclass
bDeviceProtocol 255 Vendor Specific Protocol
bMaxPacketSize0 64
idVendor 0x0cf3 Qualcomm Atheros Communications
idProduct 0x9271 AR9271 802.11n
bcdDevice 1.08
iManufacturer 16
iProduct 32
iSerial 48
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x003c
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 500mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 6
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x04 EP 4 OUT
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x05 EP 5 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x06 EP 6 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0Strangely when I tried to save the output into a file lsusb -b > output I get an error, but only when I try to save the output
Couldn't open device, some information will be missing
Couldn't open device, some information will be missing
Couldn't open device, some information will be missing
Couldn't open device, some information will be missing
Couldn't open device, some information will be missing
Couldn't open device, some information will be missing
Couldn't open device, some information will be missing
Couldn't open device, some information will be missingLast edited by DCx86 (2020-06-29 11:46:17)
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#14 2020-06-29 11:53:45
- DCx86
- Member
- From: Uppsala
- Registered: 2018-02-20
- Posts: 47
Re: [SOLVED] Wifi-menu invalid interface specification via usb wifi dongle
schard wrote:
It's not a bug, it's a feature.
@OP: Does a downgrade to a kernel version of 5.7.2 or lower solve this issue?
I haven't done any downgrading before, I'll need to do some reading to see how its done. I'm a bit worries fiddling with the kernel cos I have little to no idea what I'm doing.
Any suggestions how to do a safe downgrade?
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#15 2020-06-29 11:57:13
- loqs
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- Registered: 2014-03-06
- Posts: 18,045
Re: [SOLVED] Wifi-menu invalid interface specification via usb wifi dongle
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#16 2020-06-29 12:28:42
- DCx86
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- From: Uppsala
- Registered: 2018-02-20
- Posts: 47
Re: [SOLVED] Wifi-menu invalid interface specification via usb wifi dongle
Okay, I downgrade to kernel 5.7.2 and the wifi seems to be working now.
uname -r:
5.7.2-arch1-1ip link show:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: enp3s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN mode DEFAULT group default qlen 1000
link/ether 80:ee:73:95:d0:49 brd ff:ff:ff:ff:ff:ff
3: enp4s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000
link/ether 80:ee:73:95:d0:48 brd ff:ff:ff:ff:ff:ff
7: wlp0s20u1: <BROADCAST,MULTICAST> mtu 1500 qdisc mq state DOWN mode DEFAULT group default qlen 1000
link/ether c0:4a:00:25:a5:1e brd ff:ff:ff:ff:ff:ffBut I think this was not supposed to be solution but more like troubleshoot. Right?
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#17 2020-06-29 12:31:09
- schard
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Re: [SOLVED] Wifi-menu invalid interface specification via usb wifi dongle
It's an interim workaround until the Linux devs have fixed the bug, that @loqs linked to.
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#18 2020-06-29 12:41:24
- DCx86
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- From: Uppsala
- Registered: 2018-02-20
- Posts: 47
Re: [SOLVED] Wifi-menu invalid interface specification via usb wifi dongle
Yes, I understand. Wish them best of luck with that. Must be a really difficult job linux developer but exiting none the less.
One more thing, for some reason the video resolution was affected after the downgrade. Not sure where to being to fix this, do I need to downgrade some other packages as well? Thanks for the help!
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#19 2020-06-29 12:46:48
- schard
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- From: Hannover
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Re: [SOLVED] Wifi-menu invalid interface specification via usb wifi dongle
Aftereffects of kernel downgrades are usually not a good sign.
I am unsure as to whether you should start a new topic on that or not.
What graphics card are you using with what driver?
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#20 2020-06-29 12:52:23
- DCx86
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- From: Uppsala
- Registered: 2018-02-20
- Posts: 47
Re: [SOLVED] Wifi-menu invalid interface specification via usb wifi dongle
I will start new topic. Thanks.
Last edited by DCx86 (2020-06-30 09:02:39)
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