Yousef Saber's questions -ubuntu

Yousef Saber

Asked: 2020-02-15 12:52:43 +0800 CST

can't log in with my password during ssh connection

1

my /etc/ssh/ssh_config is as follows

# This is the ssh client system-wide configuration file.  See
# ssh_config(5) for more information.  This file provides defaults for
# users, and the values can be changed in per-user configuration files
# or on the command line.

# Configuration data is parsed as follows:
#  1. command line options
#  2. user-specific file
#  3. system-wide file
# Any configuration value is only changed the first time it is set.
# Thus, host-specific definitions should be at the beginning of the
# configuration file, and defaults at the end.

# Site-wide defaults for some commonly used options.  For a comprehensive
# list of available options, their meanings and defaults, please see the
# ssh_config(5) man page.

#Host *
#   ForwardAgent no
#   ForwardX11 no
#   ForwardX11Trusted yes
    PasswordAuthentication yes
#   HostbasedAuthentication no
#   GSSAPIAuthentication no
#   GSSAPIDelegateCredentials no
#   GSSAPIKeyExchange no
#   GSSAPITrustDNS no
#   BatchMode no
#   CheckHostIP yes
#   AddressFamily any
#   ConnectTimeout 0
#   StrictHostKeyChecking ask
#   IdentityFile ~/.ssh/id_rsa
#   IdentityFile ~/.ssh/id_dsa
#   IdentityFile ~/.ssh/id_ecdsa
#   IdentityFile ~/.ssh/id_ed25519
#   Port 22
#   Protocol 2
#   Ciphers aes128-ctr,aes192-ctr,aes256-ctr,aes128-cbc,3des-cbc
#   MACs hmac-md5,hmac-sha1,[email protected]
#   EscapeChar ~
#   Tunnel no
#   TunnelDevice any:any
#   PermitLocalCommand no
#   VisualHostKey no
#   ProxyCommand ssh -q -W %h:%p gateway.example.com
#   RekeyLimit 1G 1h
#    SendEnv LANG LC_*
#    HashKnownHosts yes
#    GSSAPIAuthentication yes

my student user

ubuntu@ubuntu:~$ finger student
Login: student                  Name: 
Directory: /home/student                Shell: /bin/bash
Never logged in.
No mail.
No Plan.

when establishing an SSH connection with my VM it should as me to enter a password which isn't the case I got this ?

joseph@joseph-X541UJ:~$ multipass list 
Name                    State             IPv4             Image
ubuntu                  Running           10.226.208.153   Ubuntu 18.04 LTS
joseph@joseph-X541UJ:~$ ssh [email protected]
[email protected]: Permission denied (publickey).

why I can't log in to student user with its password please help

Yousef Saber

Asked: 2019-11-17 12:58:58 +0800 CST

warning: LFLAGS is deprecated and will be removed in a future version of Octave, use LDFLAGS instead

2

Ubuntu 19.10

Octave 5.1 flatpak every time I install an application I get this error then the CPU usages reaches 100%

pkg install control-3.2.0.tar.gz
warning: LFLAGS is deprecated and will be removed in a future version of Octave, use LDFLAGS instead

UPDATE

after waiting for a long time ( 5 to 15 minutes approx ) the package has been installed

Yousef Saber

Asked: 2019-10-10 08:25:35 +0800 CST

Can't install octave forges with Ubuntu 19.04

1

Octave Forges fails to install octave from repositories on Ubuntu 19.04 using snap octave v5.1:

pkg install -forge symbolic
error: get_forge_pkg: could not read URL, please verify internet connection
error: called from
    get_forge_pkg at line 66 column 7
    get_forge_download at line 26 column 14
    pkg at line 407 column 31

I also tried installing the packages from downloaded images:

>> pkg install symbolic-2.8.0.tar.gz
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_TIME = "C",
        LC_MONETARY = "en_US.UTF-8",
        LC_ADDRESS = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_MEASUREMENT = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_NUMERIC = "C",
        LC_PAPER = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
For information about changes from previous versions of the symbolic package, run 'news symbolic'.

my locale settings

locale
LANG=en_US.UTF-8
LANGUAGE=
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC=en_US.UTF-8
LC_TIME=en_US.UTF-8
LC_COLLATE="en_US.UTF-8"
LC_MONETARY=en_US.UTF-8
LC_MESSAGES="en_US.UTF-8"
LC_PAPER=en_US.UTF-8
LC_NAME=en_US.UTF-8
LC_ADDRESS=en_US.UTF-8
LC_TELEPHONE=en_US.UTF-8
LC_MEASUREMENT=en_US.UTF-8
LC_IDENTIFICATION=en_US.UTF-8
LC_ALL=

UPDATE

the situation has improved mostly for the better I now use the flatpak app instead of the snap app and everything works fine ( except that I'm still unable to install packages from repositories )

anyway I still face this annoying little issue every time I load Symbolic

syms x
Symbolic pkg v2.8.0: sh: warning: setlocale: LC_ALL: cannot change locale (C.UTF-8)
sh: warning: setlocale: LC_ALL: cannot change locale (C.UTF-8)
sh: warning: setlocale: LC_ALL: cannot change locale (C.UTF-8)
Python communication link active, SymPy v1.3.

Yousef Saber

Asked: 2019-04-20 05:07:10 +0800 CST

Error creating VDPAU device: 1

2

my GPU Geforce 920M supports multiple video codex according the the official docs

http://us.download.nvidia.com/XFree86/Linux-x86_64/418.56/README/supportedchips.html

http://us.download.nvidia.com/XFree86/Linux-x86_64/418.56/README/vdpausupport.html

I followed the instructions installing libvdpau , VDPAU , and installed the latest NVIDIA graphics from ubuntu repository

although my system can't identify any video decoder on my NVIDIA GPU how to fix this problem

joseph@joseph-X541UJ:~$ export VDPAU_NVIDIA_DEBUG=3
joseph@joseph-X541UJ:~$ export VDPAU_TRACE=1
joseph@joseph-X541UJ:~$ sudo ln -s /usr/lib/nvidia-current/vdpau/libvdpau_nvidia.so /usr/lib/libvdpau_nvidia.so
[sudo] password for joseph: 
ln: failed to create symbolic link '/usr/lib/libvdpau_nvidia.so': File exists
joseph@joseph-X541UJ:~$ sudo mv /usr/lib/libvdpau_nvidia.so.backup /usr/lib/libvdpau_nvidia.so
mv: cannot stat '/usr/lib/libvdpau_nvidia.so.backup': No such file or directory
joseph@joseph-X541UJ:~$ sudo ln -s /usr/lib/nvidia-current/vdpau/libvdpau_nvidia.so /usr/lib/libvdpau_nvidia.so
ln: failed to create symbolic link '/usr/lib/libvdpau_nvidia.so': File exists
joseph@joseph-X541UJ:~$ sudo mv /usr/lib/libvdpau_nvidia.so.backup /usr/lib/libvdpau_nvidia.so
mv: cannot stat '/usr/lib/libvdpau_nvidia.so.backup': No such file or directory
joseph@joseph-X541UJ:~$ vdpauinfo 
display: :0   screen: 0
VDPAU capture: Enabled
vdp_imp_device_create_x11(0x55731ce33e70, 0, -, -)
GPU at BusId 0x1 doesn't have a supported video decoder
VDPAU nvidia: Version: NVIDIA VDPAU Driver Shared Library  418.56  Fri Mar 15 12:31:51 CDT 2019
VDPAU nvidia: Error detected 9 373  3
VDPAU nvidia: Backtrace:
--: /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_nvidia.so.1 [0x7fb72d51d000] DSO load base
00: /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_nvidia.so.1 [0x7fb72d55551c] 
01: /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_nvidia.so.1 [0x7fb72d544033] 
02: /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_nvidia.so.1 [0x7fb72d5274f1] vdp_imp_device_create_x11
    -> 1
Error creating VDPAU device: 1

here is when using MPV player to play a youtube video this is the output

joseph@joseph-X541UJ:~$ export VDPAU_TRACE_FILE=mplayer.log
joseph@joseph-X541UJ:~$ export VDPAU_TRACE_FILE=mpv.log
joseph@joseph-X541UJ:~$ https://www.youtube.com/watch?v=Spk6GyOzjwQ
bash: https://www.youtube.com/watch?v=Spk6GyOzjwQ: No such file or directory
joseph@joseph-X541UJ:~$ sudo nano .config/mpv/mpv.conf 
joseph@joseph-X541UJ:~$ mpv https://www.youtube.com/watch?v=Spk6GyOzjwQ
Playing: https://www.youtube.com/watch?v=Spk6GyOzjwQ
 (+) Video --vid=1 (*) (h264 1920x1080 60.000fps)
 (+) Audio --aid=1 --alang=eng (*) 'DASH audio' (opus 2ch 48000Hz) (external)
GPU at BusId 0x1 doesn't have a supported video decoder
VDPAU nvidia: Version: NVIDIA VDPAU Driver Shared Library  418.56  Fri Mar 15 12:31:51 CDT 2019
VDPAU nvidia: Error detected 9 373  3
VDPAU nvidia: Backtrace:
--: /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_nvidia.so.1 [0x7f296517c000] DSO load base
00: /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_nvidia.so.1 [0x7f29651b451c] 
01: /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_nvidia.so.1 [0x7f29651a3033] 
02: /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_nvidia.so.1 [0x7f29651864f1] vdp_imp_device_create_x11
AO: [pulse] 48000Hz stereo 2ch float
[ffmpeg/video] h264: Hardware is lacking required capabilities
[ffmpeg/video] h264: Failed setup for format cuda: hwaccel initialisation returned error.
VO: [gpu] 1920x1080 yuv420p
AV: 00:00:57 / 00:32:30 (2%) A-V:  0.000 Dropped: 24 Cache: 46s+32MB
[ffmpeg] NULL: Invalid NAL unit size (5001 > 2466).
[ffmpeg] NULL: missing picture in access unit with size 2470


Exiting... (Quit)

Yousef Saber

Asked: 2018-12-03 20:11:12 +0800 CST

my system can't switch to intel graphics shows LLVM instead ???

0

excuse me I'm using a manually installed NVIDIA graphics driver from Geforce official website

when I use prime-select to switch to intel graphics instead of NVIDIA it shows me this and the system can't identify my intel graphics

sudo prime-select intel

what exactly should I do to switch to intel graphics

Yousef Saber

Asked: 2018-07-04 16:33:09 +0800 CST

Ubuntu 18.04 can't boot

0

after upgrading Ubuntu 16.04 to 18.04

it doesn't boot at first the screen freezes then it goes black !!

although I can boot in ( nomodeset ) it disable Intel integrated graphics and LLVM is shown as graphics instead in my system settings and the system is unable to detect the res of my display after that the system becomes very laggy

does anyone knows how to deal with this situation

this is my system information and specs you might want to take a look at it

System information

in nomodeset the system shows LLVM instead my integrated graphics

LLVM instead of my Intel graphics !!

Yousef Saber

Asked: 2018-07-02 23:27:49 +0800 CST

I can't install snaps

1

According to snapcraft website vlc, Firefox are available as a snap format

https://snapcraft.io/vlc https://snapcraft.io/firefox

but when I try to install any of them via the command line they couldn't be installed does anyone have any fixes for this

yousef@yousef-G31M-ES2L:~$ sudo apt-get install snapd
Reading package lists... Done
Building dependency tree       
Reading state information... Done
snapd is already the newest version (2.32.9).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
yousef@yousef-G31M-ES2L:~$ sudo snap install firefox
error: snap "firefox" not found
yousef@yousef-G31M-ES2L:~$ sudo snap install vlc
error: snap "vlc" not found

This is my system information:

can't log in with my password during ssh connection

warning: LFLAGS is deprecated and will be removed in a future version of Octave, use LDFLAGS instead

Can't install octave forges with Ubuntu 19.04

Error creating VDPAU device: 1

my system can't switch to intel graphics shows LLVM instead ???

Ubuntu 18.04 can't boot

I can't install snaps

How to install Google Chrome

Is there a command to list all users? Also to add, delete, modify users, in the terminal?

How to delete a non-empty directory in Terminal?

How to unzip a zip file from the Terminal?

How can I copy the contents of a folder to another folder in a different directory using terminal?

How do I install a .deb file via the command line?

How do I run .sh scripts?

How do I install a .tar.gz (or .tar.bz2) file?

How to list all installed packages

Unable to lock the administration directory (/var/lib/dpkg/) is another process using it?