Linked Questions

39 votes
2 answers
101k views

Upgrade path from 16.04 to 20.04 LTS without GUI change

The situation: I have a couple of machines with modern hardware running 16.04 mainly used for scientific computations. With the new LTS on the horizon, I am looking to upgrade them to 20.04 with ...
user172056's user avatar
11 votes
3 answers
23k views

Key uses weak digest algorithm [duplicate]

I'am getting this kind of message while updating my ubuntu 16.04 LTS: W: http://dl.google.com/linux/chrome/deb/dists/stable/Release.gpg: Signature by key 4CCA1EAF950CEE4AB83976DCA040830F7FAC5991 uses ...
sudhi's user avatar
  • 121
8 votes
1 answer
4k views

reprepro: Signature by key uses weak digest algorithm (SHA1)

I'm hosting some internal repositories using reprepro. After the upgrade of the clients to Ubuntu 16.04, apt-get update gives a warning "InRelease: Signature by key ... uses weak digest algorithm (...
Velkan's user avatar
  • 3,616
4 votes
0 answers
1k views

Ubuntu 16.04 updating Google Chrome gets weak digest and hash sum mismatch messages [duplicate]

So for a while now whenever I run sudo apt-get update I have been getting some output regarding google-chrome similar to: W: http://dl.google.com/linux/chrome/deb/dists/stable/Release.gpg: Signature ...
Ian's user avatar
  • 675
3 votes
2 answers
13k views

How to handle "invalid signature" in apt-get

Following an update to Focal, I had to revisit /etc/apt/sources* to update my third party repositories. One of the reposities is for the Yorba PPA at: https://launchpad.net/~yorba/+archive/ubuntu/ppa ...
user1283068's user avatar
3 votes
0 answers
5k views

Can't install CUDA 9.2 - Unable to locate package cuda [duplicate]

I have followed the installation steps described in this link using the package manager installation method for Ubuntu 16.04 I have a GeForce GTX 960M gcc --version returns: gcc (Ubuntu 5.4.0-...
Pedro Piacenza's user avatar
3 votes
0 answers
2k views

apt-get update fails on Ubuntu 16.04 when I enable the google music manager ppa [duplicate]

Seems as if the pre-16.04 security key security is no longer sufficient. I'm not sure what to do to fix this. Or is this something google needs to fix on their end? moorepants@parvati:~$ sudo ...
moorepants's user avatar
2 votes
2 answers
3k views

Software Updater Issue 16.04

Whenever I click on software updater it says Failed to download repository information. It's been saying this for the past few days now and I don't know why, my Internet connection is fine, I am able ...
AdLinux's user avatar
  • 516
2 votes
1 answer
17k views

How to fix the error, while updating my package list in Ubuntu 16.04? [duplicate]

I get this error when I try to update my Ubuntu 16.04. I already tried few solutions but nothing worked so far. Error: W: http://archive.canonical.com/ubuntu/dists/precise/Release.gpg: Signature by ...
Nikhil 's user avatar
  • 765
2 votes
1 answer
4k views

Updating Ubuntu & understanding errors thrown by APT

I am new to Ubuntu but I recently started using Ubuntu on my laptop for almost everything. I executed sudo apt-get update to update my system, but I do not understand the output. I don't know whether ...
AJS_fan's user avatar
  • 23
2 votes
1 answer
3k views

Red triangle with an exclamation mark Ubuntu 16.04

so I'm running Ubuntu 16.04 and the red exclamation mark just appeared. What can I do?? but everything is up to date on the computer here's what I get, when I use the update/upgrade command: Ign:...
Tatev Kot Vardapetyan's user avatar
2 votes
1 answer
1k views

W: Invalid 'Date' entry in Release file /var/lib/apt/lists/partial/_var_cuda-repo-8-0-local_Release [duplicate]

When I run $ sudo apt-get update I get sudo apt-get update Get:1 file:/var/cuda-repo-8-0-local InRelease Ign:1 file:/var/cuda-repo-8-0-local ...
Martin Thoma's user avatar
  • 19.3k
2 votes
1 answer
2k views

Signature uses weak digest algorithm [duplicate]

I'm new in Ubuntu 16 and want to know, how to fix this problem. Reading package lists... Done Building dependency tree Reading state information... Done 4 packages can be upgraded. Run 'apt ...
Felliks Feiters's user avatar
2 votes
1 answer
4k views

ubuntu 16.04 : getting signature by key uses weak digest algorithm (sha1) [duplicate]

New on Ubuntu .. I'm getting these warning after $ sude apt-get update W: http://archive.canonical.com/ubuntu/dists/precise/Release.gpg: Signature by key 630239CC130E1A7FD81A27B140976EAF437D05B5 ...
Shail Paras's user avatar
1 vote
2 answers
82 views

Is this prompt a problem please excuse my ignorance [duplicate]

W: http://dl.google.com/linux/chrome/deb/dists/stable/Release.gpg: Signature by key 3B068FB4789ABE4AEFA3BB491397BC53640DB551 uses weak digest algorithm (SHA1) W: There is no public key available ...
Rick Smith's user avatar

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