LinuxQuestions.org
Share your knowledge at the LQ Wiki.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Distributions > Debian
User Name
Password
Debian This forum is for the discussion of Debian Linux.

Notices


Reply
  Search this Thread
Old 02-23-2020, 08:05 AM   #1
Thomas Korimort
Member
 
Registered: Jul 2016
Location: 2640 Enzenreith, Austria
Distribution: Debian/Raspbian
Posts: 53

Rep: Reputation: Disabled
Debian Buster and Raspbian apt update cannot resolve servers anymore since 1.5 months, very slow till no updates


Hi!

since 1.5 months my internet connection makes problems and i changed a lot of things, .e.g. i changed my public IP to private in order to counteract DNS spoofing and DoS attacks. I changed from the Google DNS servers to my ISP servers DNS servers. Finally, i changed to a new internet fee from my provider from a 30MBit/10MBit LTE line to a 100MBit/20MBit LTE line. Things improved greatly but the only problem i have still is, that my apt update seems to not work anymore at all. Can it be that my ISPs DNS servers are spoiled in relation to Google DNS servers for resolving the linux apt servers? What else could be the reason for this problem?

Last edited by Thomas Korimort; 02-23-2020 at 08:19 AM.
 
Old 02-24-2020, 12:52 AM   #2
rokytnji
LQ Veteran
 
Registered: Mar 2008
Location: Waaaaay out West Texas
Distribution: AntiX 19
Posts: 6,147
Blog Entries: 21

Rep: Reputation: 3088Reputation: 3088Reputation: 3088Reputation: 3088Reputation: 3088Reputation: 3088Reputation: 3088Reputation: 3088Reputation: 3088Reputation: 3088Reputation: 3088
What're your repo lists and what errors are thrown when

Code:
sudo apt-get update && sudo apt-get upgrade
Is envoked in terminal

My repo list buster lines

Code:
  Active apt repos in: /etc/apt/sources.list.d/debian-stable-updates.list 
  1: deb http://ftp.us.debian.org/debian/ buster-updates main contrib non-free
  Active apt repos in: /etc/apt/sources.list.d/debian.list 
  1: deb http://ftp.us.debian.org/debian/ buster main contrib non-free
  2: deb http://security.debian.org/ buster/updates main contrib non-free

Last edited by rokytnji; 02-24-2020 at 12:54 AM.
 
Old 02-24-2020, 12:57 AM   #3
berndbausch
Senior Member
 
Registered: Nov 2013
Location: Tokyo
Distribution: A few
Posts: 4,957

Rep: Reputation: 1480Reputation: 1480Reputation: 1480Reputation: 1480Reputation: 1480Reputation: 1480Reputation: 1480Reputation: 1480Reputation: 1480Reputation: 1480
Your problem description is extremely vague. How about showing commands, config files, error messages? You talk about changes at ISP level; have you changed anything on the computers that you try to update?

You mention problems resolving domain names. Have you tried public DNS servers like 1.1.1.1 or 8.8.8.8? Debian has repos in many places, in particular in places that have nothing to do with Debian. For example, a good update source for me is http://ftp.jaist.ac.jp/pub/Linux/debian (JAIST is a university and research institute in Japan). Do you have a problem resolving ftp.jaist.ac.jp? If not, change your sources.list accordingly. If you do, change the DNS server and try again.

Last edited by berndbausch; 02-24-2020 at 12:59 AM.
 
Old 02-24-2020, 10:00 AM   #4
Thomas Korimort
Member
 
Registered: Jul 2016
Location: 2640 Enzenreith, Austria
Distribution: Debian/Raspbian
Posts: 53

Original Poster
Rep: Reputation: Disabled
Hi! For my RPi 4 4GB on Raspbian i used the predefined mirrors, which did not work anymore for me for some reason. It also said that the release files were not there anymore, but i think it was also because of DNS resolving issues. After a change to a different Raspbian mirror it worked again. For my Desktop i am using the same mirror like before which works now again and i don't know why. After turning back to a private IP, upgrading my internet tarif, buying a new mobile and buying a new router, removing all port forwards it seems like things are going back to normal operation mode. Maybe my ISPs DNS cache was spoofed and now finally is cleared and the private IP can now only be attacked by my ISP provider himself, which they never would do of course (for what reason should they destroy their own reputation/network integrity?).

Another problem that i identified is with pulseaudio. After recovering from sleep mode i have to always kill it in order to get normal playback on my desktop. It is so strange. The headphones always play nicely, but when i switch back to speakers surprisingly the playback speed is like 20x or something like that and also the volume is very loud. After killing pulseaudio things are normal again, but it could work nicely at first place without such spooky phenomena.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
[SOLVED] After having a successful installation of Debian Buster, Lenovo computer refuses to boot into Debian Buster 10.2 PicardDefendingData Debian 4 12-21-2019 07:51 PM
LXer: Raspbian PIXEL Fork for PC and Mac Is Now Based on Debian GNU/Linux 10 "Buster" LXer Syndicated Linux News 0 11-06-2019 01:51 AM
LXer: Raspbian GNU/Linux upgrade from Stretch to Raspbian Buster 10 LXer Syndicated Linux News 0 07-26-2019 06:12 PM
Samba login very slow on Debian Buster Thomas Korimort Linux - Server 2 07-23-2019 03:17 AM
apt-get update errors since Debian released ( bad /etc/apt/sources.list ?) forgox Debian 10 06-13-2005 12:28 PM

LinuxQuestions.org > Forums > Linux Forums > Linux - Distributions > Debian

All times are GMT -5. The time now is 03:06 PM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Open Source Consulting | Domain Registration