Unable to install updates

For diagnostic purposes please provide the output of the following commands (to be executed in a terminal window):

uname -a
lsb_release -crid
sudo apt-get update

uname -a

Linux denisito-Inspiron-1545 4.4.0-38-generic #57-Ubuntu SMP Tue Sep 6 15:42:33 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

lsb_release -crid

Distributor ID: Ubuntu
Description: Ubuntu 16.04.1 LTS
Release: 16.04
Codename: xenial

sudo apt-get update
[sudo] password for denisito:

________________________________
From: <email address hidden> <email address hidden> on behalf of Manfred Hampl <email address hidden>
Sent: 21 March 2018 08:19
To: <email address hidden>
Subject: Re: [Question #666898]: Unable to install updates

Your question #666898 on xorg in Ubuntu changed:
https://answers.launchpad.net/ubuntu/+source/xorg/+question/666898
Question #666898 : Questions : xorg package : Ubuntu<https://answers.launchpad.net/ubuntu/+source/xorg/+question/666898>
answers.launchpad.net
I tried many times to install updates. After clicking on install, after authentication it starts and then says :- REQUIRES INSTALLATION OF UNTRUSTED PACKAGES . This requires installing packages from unauthenticated sources.

    Status: Open => Needs information

Manfred Hampl requested more information:
For diagnostic purposes please provide the output of the following
commands (to be executed in a terminal window):

uname -a
Linux denisito-Inspiron-1545 4.4.0-38-generic #57-Ubuntu SMP Tue Sep 6 15:42:33 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

lsb_release -crid
Distributor ID: Ubuntu
Description: Ubuntu 16.04.1 LTS
Release: 16.04
Codename: xenial

sudo apt-get update
[sudo] password for denisito:

--
To answer this request for more information, you can either reply to
this email or enter your reply at the following page:
https://answers.launchpad.net/ubuntu/+source/xorg/+question/666898

You received this question notification because you asked the question.

You have to type your password at the "[sudo] password for denisito:" prompt (as a confirmation for an administrative action), but please note tat you will not get any feedback (no echo, not even '*' placeholders).

Please try again and copy/paste all output.

[sudo] password for denisito:
Get:1 http://security.ubuntu.com/ubuntu xenial-security InRelease [102 kB]
Get:2 http://archive.ubuntu.com/ubuntu xenial InRelease [247 kB]
Ign:1 http://security.ubuntu.com/ubuntu xenial-security InRelease
Get:3 http://archive.ubuntu.com/ubuntu xenial-updates InRelease [102 kB]
Ign:2 http://archive.ubuntu.com/ubuntu xenial InRelease
Get:4 http://archive.ubuntu.com/ubuntu xenial-backports InRelease [102 kB]
Ign:3 http://archive.ubuntu.com/ubuntu xenial-updates InRelease
Ign:4 http://archive.ubuntu.com/ubuntu xenial-backports InRelease
Fetched 553 kB in 4s (137 kB/s)
Reading package lists... Done
W: GPG error: http://security.ubuntu.com/ubuntu xenial-security InRelease: At least one invalid signature was encountered.
W: The repository 'http://security.ubuntu.com/ubuntu xenial-security InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial InRelease: At least one invalid signature was encountered.
W: The repository 'http://archive.ubuntu.com/ubuntu xenial InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial-updates InRelease: At least one invalid signature was encountered.
W: The repository 'http://archive.ubuntu.com/ubuntu xenial-updates InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://archive.ubuntu.com/ubuntu xenial-backports InRelease: At least one invalid signature was encountered.
W: The repository 'http://archive.ubuntu.com/ubuntu xenial-backports InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
denisito@denisito-Inspiron-1545:~$

________________________________
From: <email address hidden> <email address hidden> on behalf of Manfred Hampl <email address hidden>
Sent: 21 March 2018 09:47
To: <email address hidden>
Subject: Re: [Question #666898]: Unable to install updates

Your question #666898 on xorg in Ubuntu changed:
https://answers.launchpad.net/ubuntu/+source/xorg/+question/666898
Question #666898 : Questions : xorg package : Ubuntu<https://answers.launchpad.net/ubuntu/+source/xorg/+question/666898>
answers.launchpad.net
I tried many times to install updates. After clicking on install, after authentication it starts and then says :- REQUIRES INSTALLATION OF UNTRUSTED PACKAGES . This requires installing packages from unauthenticated sources.

    Status: Open => Needs information

Manfred Hampl requested more information:
You have to type your password at the "[sudo] password for denisito:"
prompt (as a confirmation for an administrative action), but please note
tat you will not get any feedback (no echo, not even '*' placeholders).

Please try again and copy/paste all output.

--
To answer this request for more information, you can either reply to
this email or enter your reply at the following page:
https://answers.launchpad.net/ubuntu/+source/xorg/+question/666898

You received this question notification because you asked the question.

What is the output of the command

ls -l /etc/apt/trusted.gpg /etc/apt/trusted.gpg.d/*

ls -l /etc/apt/trusted.gpg /etc/apt/trusted.gpg.d/*
-rw-r--r-- 1 root root 12255 Mar 21 08:03 /etc/apt/trusted.gpg
-rw------- 1 root root 1216 Apr 18 2014 /etc/apt/trusted.gpg.d/jockey-drivers.gpg
-rw------- 1 root root 1216 Apr 18 2014 /etc/apt/trusted.gpg.d/jockey-drivers.gpg~

________________________________
From: <email address hidden> <email address hidden> on behalf of Manfred Hampl <email address hidden>
Sent: 21 March 2018 10:09
To: <email address hidden>
Subject: Re: [Question #666898]: Unable to install updates

Your question #666898 on xorg in Ubuntu changed:
https://answers.launchpad.net/ubuntu/+source/xorg/+question/666898

    Status: Open => Needs information

Manfred Hampl requested more information:
What is the output of the command

ls -l /etc/apt/trusted.gpg /etc/apt/trusted.gpg.d/*

--
To answer this request for more information, you can either reply to
this email or enter your reply at the following page:
https://answers.launchpad.net/ubuntu/+source/xorg/+question/666898

You received this question notification because you asked the question.

Try the command

sudo chmod a+r /etc/apt/trusted.gpg.d/jockey-drivers.gpg*

and then re-execute

sudo apt-get update

and finally copy/paste all output as before.

(Remark: If you use e-mail replies to answer, please remove all old information from the e-mail.)

sudo chmod a+r /etc/apt/trusted.gpg.d/jockey-drivers.gpg*
denisito@denisito-Inspiron-1545:~$
denisito@denisito-Inspiron-1545:~$ and then re-execute
The program 'and' is currently not installed. You can install it by typing:
sudo apt install and
denisito@denisito-Inspiron-1545:~$
denisito@denisito-Inspiron-1545:~$ sudo apt-get update
Get:1 http://archive.ubuntu.com/ubuntu xenial InRelease [247 kB]
Get:2 http://security.ubuntu.com/ubuntu xenial-security InRelease [102 kB]
Get:3 http://archive.ubuntu.com/ubuntu xenial-updates InRelease [102 kB]
Get:4 http://archive.ubuntu.com/ubuntu xenial-backports InRelease [102 kB]
Fetched 553 kB in 1s (341 kB/s)
Reading package lists... Done
denisito@denisito-Inspiron-1545:~$ sudo apt install and
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed
  and
0 to upgrade, 1 to newly install, 0 to remove and 782 not to upgrade.
Need to get 30.0 kB of archives.
After this operation, 152 kB of additional disk space will be used.
Get:1 http://archive.ubuntu.com/ubuntu xenial/universe amd64 and amd64 1.2.2-4.1 [30.0 kB]
Fetched 30.0 kB in 0s (83.1 kB/s)
Selecting previously unselected package and.
(Reading database ... 466370 files and directories currently installed.)
Preparing to unpack .../and_1.2.2-4.1_amd64.deb ...
Unpacking and (1.2.2-4.1) ...
Processing triggers for systemd (229-4ubuntu8) ...
Processing triggers for ureadahead (0.100.0-19) ...
ureadahead will be reprofiled on next reboot
Processing triggers for man-db (2.7.5-1) ...
Setting up and (1.2.2-4.1) ...
initctl: Unable to connect to Upstart: Failed to connect to socket /com/ubuntu/upstart: Connection refused
insserv: warning: script 'binfmt-support' missing LSB tags and overrides
insserv: Default-Start undefined, assuming empty start runlevel(s) for script `binfmt-support'
insserv: Default-Stop undefined, assuming empty stop runlevel(s) for script `binfmt-support'
Processing triggers for systemd (229-4ubuntu8) ...
Processing triggers for ureadahead (0.100.0-19) ...

________________________________
From: <email address hidden> <email address hidden> on behalf of Manfred Hampl <email address hidden>
Sent: 21 March 2018 10:27
To: <email address hidden>
Subject: Re: [Question #666898]: Unable to install updates

Your question #666898 on xorg in Ubuntu changed:
https://answers.launchpad.net/ubuntu/+source/xorg/+question/666898
Question #666898 : Questions : xorg package : Ubuntu<https://answers.launchpad.net/ubuntu/+source/xorg/+question/666898>
answers.launchpad.net
I tried many times to install updates. After clicking on install, after authentication it starts and then says :- REQUIRES INSTALLATION OF UNTRUSTED PACKAGES . This requires installing packages from unauthenticated sources.

    Status: Open => Needs information

Manfred Hampl requested more information:
Try the command

sudo chmod a+r /etc/apt/trusted.gpg.d/jockey-drivers.gpg*

and then re-execute

sudo apt-get update

and finally copy/paste all output as before.

(Remark: If you use e-mail replies to answer, please remove all old
information from the e-mail.)

--
To answer this request for more information, you can either reply to
this email or enter your reply at the following page:
https://answers.launchpad.net/ubuntu/+source/xorg/+question/666898

You received this question notification because you asked the question.

Looks fine now, to me.

If you run:

sudo apt-get update; sudo apt-get upgrade; sudo apt-get dist-upgrade

Is it now up to date? If so then please mark as solved and cite reply #7 as the resolution

Thanks

Problem solved.
Thanks very much