[SOLVED]No internet after connecting to wi-fi on Lenovo thinkpad T540p

geekoba153 · 2020-10-07 06:40:24

After a NetworkManager update I am unable to get internet access even after connecting to wi-fi.
I have tried different wi-fi backends like iwd, wpa_supplicant but every time even after connecting to wifi I do not get internet access.
I have gone through the wiki, troubleshooting of networkmanager, iwd and wpa_supplicant and tried all the solution but no luck.
Could it be a hardware problem? But it was working fine a few weeks ago..
Any help/solution is highly appreciated

Last edited by geekoba153 (2020-10-10 14:09:19)

Khere · 2020-10-07 17:42:16

Post the output of :

journalctl -b -u NetworkManager.service
ifconfig -a

geekoba153 · 2020-10-08 13:15:59

Khere wrote:

Post the output of :

journalctl -b -u NetworkManager.service
ifconfig -a

Output of journalctl -b -u NetworkManager.serivce

-- Logs begin at Thu 2020-08-13 21:51:23 IST, end at Thu 2020-10-08 19:11:30 IST. --
Oct 08 18:35:19 Yash systemd[1]: Starting Network Manager...
Oct 08 18:35:21 Yash NetworkManager[375]: <info>  [1602162321.2248] NetworkManager (version 1.26.2-1) is starting... (for the first time)
Oct 08 18:35:21 Yash NetworkManager[375]: <info>  [1602162321.2257] Read config: /etc/NetworkManager/NetworkManager.conf (lib: 20-connectivity.conf)
Oct 08 18:35:21 Yash systemd[1]: Started Network Manager.
Oct 08 18:35:21 Yash NetworkManager[375]: <info>  [1602162321.2848] bus-manager: acquired D-Bus service "org.freedesktop.NetworkManager"
Oct 08 18:35:21 Yash NetworkManager[375]: <info>  [1602162321.4264] manager[0x560f2ac39050]: monitoring kernel firmware directory '/lib/firmware'.
Oct 08 18:35:21 Yash NetworkManager[375]: <info>  [1602162321.7269] hostname: hostname: using hostnamed
Oct 08 18:35:21 Yash NetworkManager[375]: <info>  [1602162321.7270] hostname: hostname changed from (none) to "Yash"
Oct 08 18:35:21 Yash NetworkManager[375]: <info>  [1602162321.7294] dns-mgr[0x560f2abf2220]: init: dns=default,systemd-resolved rc-manager=immutable
Oct 08 18:35:21 Yash NetworkManager[375]: <info>  [1602162321.7302] rfkill2: found Wi-Fi radio killswitch (at /sys/devices/pci0000:00/0000:00:1c.1/0000:04:00.0/ieee80211/phy0/rfkill2) (driver iwlwifi)
Oct 08 18:35:21 Yash NetworkManager[375]: <info>  [1602162321.7305] manager[0x560f2ac39050]: rfkill: Wi-Fi hardware radio set enabled
Oct 08 18:35:21 Yash NetworkManager[375]: <info>  [1602162321.7305] manager[0x560f2ac39050]: rfkill: WWAN hardware radio set enabled
Oct 08 18:35:22 Yash NetworkManager[375]: <info>  [1602162322.0304] Loaded device plugin: NMWifiFactory (/usr/lib/NetworkManager/1.26.2-1/libnm-device-plugin-wifi.so)
Oct 08 18:35:22 Yash NetworkManager[375]: <info>  [1602162322.0567] Loaded device plugin: NMAtmManager (/usr/lib/NetworkManager/1.26.2-1/libnm-device-plugin-adsl.so)
Oct 08 18:35:22 Yash NetworkManager[375]: <info>  [1602162322.2074] Loaded device plugin: NMBluezManager (/usr/lib/NetworkManager/1.26.2-1/libnm-device-plugin-bluetooth.so)
Oct 08 18:35:22 Yash NetworkManager[375]: <info>  [1602162322.2334] Loaded device plugin: NMOvsFactory (/usr/lib/NetworkManager/1.26.2-1/libnm-device-plugin-ovs.so)
Oct 08 18:35:22 Yash NetworkManager[375]: <info>  [1602162322.2431] Loaded device plugin: NMWwanFactory (/usr/lib/NetworkManager/1.26.2-1/libnm-device-plugin-wwan.so)
Oct 08 18:35:22 Yash NetworkManager[375]: <info>  [1602162322.5198] Loaded device plugin: NMTeamFactory (/usr/lib/NetworkManager/1.26.2-1/libnm-device-plugin-team.so)
Oct 08 18:35:22 Yash NetworkManager[375]: <info>  [1602162322.5205] manager: rfkill: Wi-Fi enabled by radio killswitch; enabled by state file
Oct 08 18:35:22 Yash NetworkManager[375]: <info>  [1602162322.5206] manager: rfkill: WWAN enabled by radio killswitch; enabled by state file
Oct 08 18:35:22 Yash NetworkManager[375]: <info>  [1602162322.5207] manager: Networking is enabled by state file
Oct 08 18:35:22 Yash NetworkManager[375]: <info>  [1602162322.5476] dhcp-init: Using DHCP client 'internal'
Oct 08 18:35:22 Yash NetworkManager[375]: <info>  [1602162322.6111] settings: Loaded settings plugin: keyfile (internal)
Oct 08 18:35:22 Yash NetworkManager[375]: <info>  [1602162322.8938] device (lo): carrier: link connected
Oct 08 18:35:22 Yash NetworkManager[375]: <info>  [1602162322.8943] manager: (lo): new Generic device (/org/freedesktop/NetworkManager/Devices/1)
Oct 08 18:35:22 Yash NetworkManager[375]: <info>  [1602162322.8961] manager: (enp0s25): new Ethernet device (/org/freedesktop/NetworkManager/Devices/2)
Oct 08 18:35:22 Yash NetworkManager[375]: <info>  [1602162322.8994] settings: (enp0s25): created default wired connection 'Wired connection 1'
Oct 08 18:35:22 Yash NetworkManager[375]: <info>  [1602162322.9004] device (enp0s25): state change: unmanaged -> unavailable (reason 'managed', sys-iface-state: 'external')
Oct 08 18:35:22 Yash NetworkManager[375]: <info>  [1602162322.9163] device (wlp4s0): driver supports Access Point (AP) mode
Oct 08 18:35:22 Yash NetworkManager[375]: <info>  [1602162322.9180] manager: (wlp4s0): new 802.11 Wi-Fi device (/org/freedesktop/NetworkManager/Devices/3)
Oct 08 18:35:22 Yash NetworkManager[375]: <info>  [1602162322.9203] device (wlp4s0): state change: unmanaged -> unavailable (reason 'managed', sys-iface-state: 'external')
Oct 08 18:35:22 Yash NetworkManager[375]: <info>  [1602162322.9655] ovsdb: Could not connect: No such file or directory
Oct 08 18:35:23 Yash NetworkManager[375]: <info>  [1602162323.1006] device (wlp4s0): supplicant interface state: internal-starting -> disconnected
Oct 08 18:35:23 Yash NetworkManager[375]: <info>  [1602162323.1008] device (wlp4s0): state change: unavailable -> disconnected (reason 'supplicant-available', sys-iface-state: 'managed')
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.5726] policy: auto-activating connection 'Redmi 1' (1f152eaf-970d-4e00-9143-38d8a2410c89)
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.5738] device (wlp4s0): Activation: starting connection 'Redmi 1' (1f152eaf-970d-4e00-9143-38d8a2410c89)
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.5739] device (wlp4s0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.5742] manager: NetworkManager state is now CONNECTING
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.5746] device (wlp4s0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.5748] device (wlp4s0): Activation: (wifi) connection 'Redmi 1' requires no security.  No secrets needed.
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.5748] Config: added 'ssid' value 'Redmi'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.5748] Config: added 'scan_ssid' value '1'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.5748] Config: added 'bgscan' value 'simple:30:-70:86400'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.5749] Config: added 'key_mgmt' value 'NONE'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.6173] device (wlp4s0): supplicant interface state: disconnected -> authenticating
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.6208] device (wlp4s0): supplicant interface state: authenticating -> associating
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.7084] device (wlp4s0): supplicant interface state: associating -> completed
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.7084] device (wlp4s0): Activation: (wifi) Stage 2 of 5 (Device Configure) successful. Connected to wireless network "Redmi"
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.7086] device (wlp4s0): state change: config -> ip-config (reason 'none', sys-iface-state: 'managed')
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.7091] dhcp4 (wlp4s0): activation: beginning transaction (timeout in 45 seconds)
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.7386] device (wlp4s0): ipv6: duplicate address check failed for the fe80::7a64:559f:ace6:de6b/64 lft forever pref forever lifetime 9-0[4294967295,4294967295] dev 3 flags permanent,tentative src kernel address
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.7521] dhcp4 (wlp4s0): state changed unknown -> expire
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8202] dhcp4 (wlp4s0): option dhcp_lease_time      => '3600'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8202] dhcp4 (wlp4s0): option domain_name_servers  => '192.168.43.1'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8202] dhcp4 (wlp4s0): option expiry               => '1602165929'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8202] dhcp4 (wlp4s0): option host_name            => 'Yash'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8202] dhcp4 (wlp4s0): option ip_address           => '192.168.43.248'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8202] dhcp4 (wlp4s0): option next_server          => '192.168.43.1'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8203] dhcp4 (wlp4s0): option requested_broadcast_address => '1'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8203] dhcp4 (wlp4s0): option requested_domain_name => '1'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8204] dhcp4 (wlp4s0): option requested_domain_name_servers => '1'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8204] dhcp4 (wlp4s0): option requested_domain_search => '1'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8204] dhcp4 (wlp4s0): option requested_host_name  => '1'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8204] dhcp4 (wlp4s0): option requested_interface_mtu => '1'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8205] dhcp4 (wlp4s0): option requested_ms_classless_static_routes => '1'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8205] dhcp4 (wlp4s0): option requested_nis_domain => '1'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8205] dhcp4 (wlp4s0): option requested_nis_servers => '1'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8206] dhcp4 (wlp4s0): option requested_ntp_servers => '1'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8206] dhcp4 (wlp4s0): option requested_rfc3442_classless_static_routes => '1'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8206] dhcp4 (wlp4s0): option requested_root_path  => '1'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8207] dhcp4 (wlp4s0): option requested_routers    => '1'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8207] dhcp4 (wlp4s0): option requested_static_routes => '1'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8207] dhcp4 (wlp4s0): option requested_subnet_mask => '1'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8207] dhcp4 (wlp4s0): option requested_time_offset => '1'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8208] dhcp4 (wlp4s0): option requested_wpad       => '1'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8208] dhcp4 (wlp4s0): option routers              => '192.168.43.1'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8208] dhcp4 (wlp4s0): option subnet_mask          => '255.255.255.0'
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8209] dhcp4 (wlp4s0): state changed expire -> bound
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8240] device (wlp4s0): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'managed')
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8398] device (wlp4s0): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'managed')
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8400] device (wlp4s0): state change: secondaries -> activated (reason 'none', sys-iface-state: 'managed')
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8411] manager: NetworkManager state is now CONNECTED_LOCAL
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8438] manager: NetworkManager state is now CONNECTED_SITE
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8441] policy: set 'Redmi 1' (wlp4s0) as default for IPv4 routing and DNS
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8448] device (wlp4s0): Activation: successful, device activated.
Oct 08 18:35:29 Yash NetworkManager[375]: <info>  [1602162329.8582] manager: startup complete

Unfortunately I don't have the ifconfig package and I'm unable to install it without internet access

Khere · 2020-10-09 06:42:17

geekoba153 wrote:

ovsdb: Could not connect: No such file or directory

I think that's the problem or the wrong DNS setting.
Can you ping the device in your WLAN ?
However post :

ip addr show $INTERFACE

Last edited by Khere (2020-10-09 06:46:56)

geekoba153 · 2020-10-09 09:22:38

Khere wrote:

ip addr show $INTERFACE

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: enp0s25: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN group default qlen 1000
    link/ether 54:ee:75:3c:52:40 brd ff:ff:ff:ff:ff:ff
3: wlp4s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 08:d4:0c:22:5e:57 brd ff:ff:ff:ff:ff:ff
    inet 192.168.43.248/24 brd 192.168.43.255 scope global dynamic noprefixroute wlp4s0
       valid_lft 3565sec preferred_lft 3565sec
    inet 192.168.43.247/24 brd 192.168.43.255 scope global secondary dynamic noprefixroute wlp4s0
       valid_lft 3571sec preferred_lft 3121sec
    inet6 2402:3a80:ca3:e017:6d1a:bdd5:ac8e:9f72/64 scope global temporary dynamic 
       valid_lft 3567sec preferred_lft 3567sec
    inet6 2402:3a80:ca3:e017:5afc:bdc:277c:f8a8/64 scope global dynamic mngtmpaddr noprefixroute 
       valid_lft 3567sec preferred_lft 3567sec
    inet6 2402:3a80:ca3:e017:575d:8423:4214:dcba/64 scope global temporary dynamic 
       valid_lft 3567sec preferred_lft 3567sec
    inet6 2402:3a80:ca3:e017:4f2e:28ea:5b5f:cd69/64 scope global dynamic mngtmpaddr noprefixroute 
       valid_lft 3567sec preferred_lft 3567sec
    inet6 fe80::223f:611:3423:5131/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever

No. I am not able to ping the device.

Khere · 2020-10-09 09:43:00

Your wireless card is connnected to the router, i think it's a issue with DNS.
You use static or dynamic IP assignment ?
Do a full system upgrade
Set the DNS as 8.8.8.8 and 8.8.4.4 and then try to ping www.google.com

Last edited by Khere (2020-10-09 09:46:38)

geekoba153 · 2020-10-09 16:23:48

Khere wrote:

Set the DNS as 8.8.8.8 and 8.8.4.4 and then try to ping www.google.com

Yay. This worked. Thanks a lot!! I'll mark the post as solved and edit the original post.

Khere · 2020-10-10 06:53:55

Mark the post as [SOLVED] now

Last edited by Khere (2020-10-10 06:54:04)

Arch Linux

#1 2020-10-07 06:40:24

[SOLVED]No internet after connecting to wi-fi on Lenovo thinkpad T540p

#2 2020-10-07 17:42:16

Re: [SOLVED]No internet after connecting to wi-fi on Lenovo thinkpad T540p

#3 2020-10-08 13:15:59

Re: [SOLVED]No internet after connecting to wi-fi on Lenovo thinkpad T540p

#4 2020-10-09 06:42:17

Re: [SOLVED]No internet after connecting to wi-fi on Lenovo thinkpad T540p

#5 2020-10-09 09:22:38

Re: [SOLVED]No internet after connecting to wi-fi on Lenovo thinkpad T540p

#6 2020-10-09 09:43:00

Re: [SOLVED]No internet after connecting to wi-fi on Lenovo thinkpad T540p

#7 2020-10-09 16:23:48

Re: [SOLVED]No internet after connecting to wi-fi on Lenovo thinkpad T540p

#8 2020-10-10 06:53:55

Re: [SOLVED]No internet after connecting to wi-fi on Lenovo thinkpad T540p

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