Arch Linux

xlogs

Member

Registered: 2022-04-19

Posts: 4

[Solved] Internet not working when I'm connected to my phone Hotspot!

Solved: the issue is that the ISP was blocking wherever I had in my resolv.conf 8.8.8.8 1.1.1.1 so once I tried their dns everythig worked fine.
if you want to keep using your favorite dns it is super easy to do with utils like dnscrypt-proxy
Please follow this guide: https://wiki.archlinux.org/title/Dnscrypt-proxy

My mobile hotspot works perfect in another windows device but when I try to use arch on my laptop to connect to it it doesn't work

I'm using NetworkManager, and I set up the connection with nmtui, in my phone I can see that yes my laptop is connected to the hotspot
but when I try to test the connection and ping google.com I get this error

"ping: google.com: Temporary failure in name resolution"

I don't know what's wrong or where the issue could be

Last edited by xlogs (2022-04-19 17:10:42)

tucuxi

Member

From: Switzerland

Registered: 2020-03-08

Posts: 291

Re: [Solved] Internet not working when I'm connected to my phone Hotspot!

Have you followed the tethering wiki page? If yes, describe your configuration in more detail.

xlogs

Member

Registered: 2022-04-19

Posts: 4

Re: [Solved] Internet not working when I'm connected to my phone Hotspot!

No, I have not followed the tethering because I just want to use the hotspot with no wires.

I have tried something interesting and it worked

on my phone I kept the hotspot ON then instead of taking data from my carrier I switched the wifi on so that my phones takes data from my home router
while my laptop was connected the my phone's hotspot the internet worked

so I thought maybe there's something going on with my carrier, but then when I try the hotspot on my other device running windows it works just fine.
So the issue is coming from my arch

I'm not sure why it is not able to resolve when connecting from arch

seth

Member

Registered: 2012-09-03

Posts: 65,122

Re: [Solved] Internet not working when I'm connected to my phone Hotspot!

perfect in another windows device but when I try to use arch on my laptop

I kept the hotspot ON then instead of taking data from my carrier I switched the wifi on so that my phones takes data from my home router

3rd link below.

Other than that, this looks very much like a DNS issue.

ip a; ip r;
cat /etc/resolv.conf
stat /etc/resolv.conf
ps aux | grep resolv
dig google.com
dig @8.8.8.8 google.com
ping 8.8.8.8

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xlogs

Member

Registered: 2022-04-19

Posts: 4

Re: [Solved] Internet not working when I'm connected to my phone Hotspot!

Thank you so much Seth for your help, here are the results of what you have showed me

$ ip a; ip r;

yes I do have an ip and everything looks fine

this is my /etc/resolv.conf

# Generated by NetworkManager
   options timeout:1
   options single-request
   
   nameserver 1.1.1.1
   nameserver 1.0.0.1
   nameserver 8.8.8.8
   nameserver 8.8.4.4

$ stat /etc/resolv.conf

I see all fine, correct owner and the right permisions

  File: /etc/resolv.conf
  Size: 148       	Blocks: 8          IO Block: 4096   regular file
Device: 0,33	Inode: 183238      Links: 1
Access: (0644/-rw-r--r--)  Uid: (    0/    root)   Gid: (    0/    root)
Access: 2022-03-06 22:59:31.333342390 +0100
Modify: 2022-03-06 22:59:31.333342390 +0100
Change: 2022-03-06 23:00:23.744683490 +0100
 Birth: 2022-03-06 22:59:31.333342390 +0100

$ ps aux | grep resolv

here I don't see any resolv running, grep only returns the 'grep resolv'

amatera+  110091  0.0  0.0   6672  2628 pts/1    S+   15:30   0:00 grep --color=auto --exclude-dir=.bzr --exclude-dir=CVS --exclude-dir=.git --exclude-dir=.hg --exclude-dir=.svn --exclude-dir=.idea --exclude-dir=.tox resolv

$ dig google.com

; <<>> DiG 9.18.1 <<>> google.com
;; global options: +cmd
;; connection timed out; no servers could be reached

$ dig @8.8.8.8 google.com

;; connection timed out; no servers could be reached

$ dig @1.1.1.1 google.com

;; connection timed out; no servers could be reached

now the interesting part is

ping 8.8.8.8 or 1.1.1.1 is working !!

any idea what should I do to find where the problem is ?

Last edited by xlogs (2022-04-19 15:40:25)

progandy

Member

Registered: 2012-05-17

Posts: 5,280

Re: [Solved] Internet not working when I'm connected to my phone Hotspot!

I'd guess your carrier blocks DNS servers except its own. Try to set your laptop to use the dns servers the phone provides via dhcp or maybe try encrypted dns with doh, dot or dnscrypt. (DoH may be the only one to bypass the blocks)

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| alias CUTF='LANG=en_XX.UTF-8@POSIX ' |

xlogs

Member

Registered: 2022-04-19

Posts: 4

Re: [Solved] Internet not working when I'm connected to my phone Hotspot!

I'd guess your carrier blocks DNS servers except its own. Try to set your laptop to use the dns servers the phone provides via dhcp or maybe try encrypted dns with doh, dot or dnscrypt. (DoH may be the only one to bypass the blocks)

Thank you so much that was the issue. the stupid ISP that I'm using is blocking 1.1.1.1 and also 8.8.8.8

I have changed to their dns and everthing is working now

I will try to find a way to dnscrypt as you said and then I'll update the post to [solved]

thank you again