3

I have added Transmission PPA. After adding PPA, when I tried to open software updater I got the following messege.

Failed to load the package list

This is a serious problem. Try again later. If this problem appears again, please report an error to the developers.

Even I could'nt open software sources, ubuntu software center, and sypnatic package manager.

What I have to do. Is there any command to remove the PPA.

Improve this question

3 Answers 3

Reset to default
3

The following command removes the ppa.

$ sudo add-apt-repository --remove ppa:PPANAME
$ sudo apt-get update
Improve this answer
1
  • Thank you but still I am getting the following message:E:Encountered a section with no Package: header, E:Problem with MergeList /var/lib/apt/lists/ppa.launchpad.net_atareao_atareao_ubuntu_dists_quantal_main_i18n_Translation-en, E:The package lists or status file could not be parsed or opened.
    – Ashok
    Jun 28, 2013 at 18:24
3

The answer from Sagar Rakshe is correct.
Here I explain how to perform it manually.

Remove the repository

First, identify your wrong file in /etc/apt/sources.list.d
(you may also have to check the main file /etc/apt/sources.list)

cd /etc/apt/sources.list.d 
head *.list

Then, rename the file to disable it:

sudo mv  WRONGFILE.list  WRONGFILE.list.backup

Or instead of renaming the file, create a backup directory and move the file there:

sudo mkdir             backup_on_date_YYYMMDD
sudo mv WRONGFILE.list backup_on_date_YYYMMDD

For your information, add-apt-repository is a python script adding or commenting lines in your *.list files. Personally I prefer to handle myself these operations in order to keep clear & secure *.list files.

Remove the package signing keys

Show the installed apt keys with apt-key list and find the key for the repo you want to remove, for example:

pub   2048R/5044912E 2010-02-11
uid                  Dropbox Automatic Signing Key <[email protected]>

You can then use sudo apt-key del 5044912E to remove this key.

Improve this answer
2
  • 1
    this won't remove the repo signing keys. I'll edit your answer to include that info.
    – amc
    Jul 3, 2013 at 22:27
  • The Remove the repository and Remove the package signing keys sections should be used if an upgrade was accomplished too? For example from 20.04 to 22.04, it with the purpose to let add the new keys for 22.04 and add the new repository - Am I correct?
    – Manuel Jordan
    Nov 22, 2022 at 21:12
0

The graphical way of removing ppa repositories is as follows:

  • open your System Settings
  • click on the Softare & Updates icon
  • go to the Other Software tab
  • select the repository you want to remove
  • click the Remove button

I hope this helps

Improve this answer
1
  • Again, this won't remove the signing keys. You can remove them using the graphical interface too -- under the Authetication tab in the Software Sources.
    – amc
    Jul 4, 2013 at 16:07

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .