не получается подключиться к ubuntu по ssh по ключу

[Егоров]

Доброго здравия всем!
У меня следующая ситуация.
Есть две ОС, обе Ubuntu. Одна работает на VirtualBox вторая на отдельном компе (ServerUbuntu).
При попытке подключения c ServerUbuntu к VirtualBox по публичному ключу все проходит нормально, а обратно (с VirtualBox k ServerUbuntu) не получается. Точнее по паролю подключится можно, а по ключу не дает. Выдает:
Permission denied (publickey,password).
Сравнивал права на папку ~/.ssh и ее содержимое на обоих машинах - все одинаково. Вроде должно работать на обоих машинах. Может еще где-то права не правильно стоят. Подскажите на что посмотреть.
Вот конфиг ServerUbuntu

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# Package generated configuration file
# See the sshd_config(5) manpage for details

# What ports, IPs and protocols we listen for
Port 22
# Use these options to restrict which interfaces/protocols sshd will bind to
#ListenAddress ::
#ListenAddress 0.0.0.0
Protocol 2
# HostKeys for protocol version 2
HostKey /etc/ssh/ssh_host_rsa_key
HostKey /etc/ssh/ssh_host_dsa_key
HostKey /etc/ssh/ssh_host_ecdsa_key
HostKey /etc/ssh/ssh_host_ed25519_key
#Privilege Separation is turned on for security
UsePrivilegeSeparation yes

# Lifetime and size of ephemeral version 1 server key
KeyRegenerationInterval 3600
ServerKeyBits 1024

# Logging
SyslogFacility AUTH
LogLevel INFO

# Authentication:
LoginGraceTime 120
PermitRootLogin no
StrictModes yes

RSAAuthentication yes
PubkeyAuthentication yes
#AuthorizedKeysFile   %h/.ssh/authorized_keys

# Don't read the user's ~/.rhosts and ~/.shosts files
IgnoreRhosts yes
# For this to work you will also need host keys in /etc/ssh_known_hosts
RhostsRSAAuthentication no
# similar for protocol version 2
HostbasedAuthentication no
# Uncomment if you don't trust ~/.ssh/known_hosts for RhostsRSAAuthentication
#IgnoreUserKnownHosts yes

# To enable empty passwords, change to yes (NOT RECOMMENDED)
PermitEmptyPasswords no

# Change to yes to enable challenge-response passwords (beware issues with
# some PAM modules and threads)
ChallengeResponseAuthentication no

# Change to no to disable tunnelled clear text passwords
#PasswordAuthentication no

# Kerberos options
#KerberosAuthentication no
#KerberosGetAFSToken no
#KerberosOrLocalPasswd yes
#KerberosTicketCleanup yes

# GSSAPI options
#GSSAPIAuthentication no
#GSSAPICleanupCredentials yes

X11Forwarding yes
X11DisplayOffset 10
PrintMotd no
PrintLastLog yes
TCPKeepAlive yes
#UseLogin no

#MaxStartups 10:30:60
#Banner /etc/issue.net

# Allow client to pass locale environment variables
AcceptEnv LANG LC_*

Subsystem sftp /usr/lib/openssh/sftp-server

# Set this to 'yes' to enable PAM authentication, account processing,
# and session processing. If this is enabled, PAM authentication will
# be allowed through the ChallengeResponseAuthentication and
# PasswordAuthentication.  Depending on your PAM configuration,
# PAM authentication via ChallengeResponseAuthentication may bypass
# the setting of "PermitRootLogin without-password".
# If you just want the PAM account and session checks to run without
# PAM authentication, then enable this but set PasswordAuthentication
# and ChallengeResponseAuthentication to 'no'.
UsePAM yes

Вот конфиг VirtualBox

(Нажмите, чтобы показать/скрыть)

# Package generated configuration file
# See the sshd_config(5) manpage for details

# What ports, IPs and protocols we listen for
Port 22
# Use these options to restrict which interfaces/protocols sshd will bind to
#ListenAddress ::
#ListenAddress 0.0.0.0
Protocol 2
# HostKeys for protocol version 2
HostKey /etc/ssh/ssh_host_rsa_key
HostKey /etc/ssh/ssh_host_dsa_key
HostKey /etc/ssh/ssh_host_ecdsa_key
HostKey /etc/ssh/ssh_host_ed25519_key
#Privilege Separation is turned on for security
UsePrivilegeSeparation yes

# Lifetime and size of ephemeral version 1 server key
KeyRegenerationInterval 3600
ServerKeyBits 1024

# Logging
SyslogFacility AUTH
LogLevel INFO

# Authentication:
LoginGraceTime 120
PermitRootLogin no
StrictModes yes

RSAAuthentication yes
PubkeyAuthentication yes
#AuthorizedKeysFile   %h/.ssh/authorized_keys

# Don't read the user's ~/.rhosts and ~/.shosts files
IgnoreRhosts yes
# For this to work you will also need host keys in /etc/ssh_known_hosts
RhostsRSAAuthentication no
# similar for protocol version 2
HostbasedAuthentication no
# Uncomment if you don't trust ~/.ssh/known_hosts for RhostsRSAAuthentication
#IgnoreUserKnownHosts yes

# To enable empty passwords, change to yes (NOT RECOMMENDED)
PermitEmptyPasswords no

# Change to yes to enable challenge-response passwords (beware issues with
# some PAM modules and threads)
ChallengeResponseAuthentication no

# Change to no to disable tunnelled clear text passwords
#PasswordAuthentication no

# Kerberos options
#KerberosAuthentication no
#KerberosGetAFSToken no
#KerberosOrLocalPasswd yes
#KerberosTicketCleanup yes

# GSSAPI options
#GSSAPIAuthentication no
#GSSAPICleanupCredentials yes

X11Forwarding yes
X11DisplayOffset 10
PrintMotd no
PrintLastLog yes
TCPKeepAlive yes
#UseLogin no

#MaxStartups 10:30:60
#Banner /etc/issue.net

# Allow client to pass locale environment variables
AcceptEnv LANG LC_*

Subsystem sftp /usr/lib/openssh/sftp-server

# Set this to 'yes' to enable PAM authentication, account processing,
# and session processing. If this is enabled, PAM authentication will
# be allowed through the ChallengeResponseAuthentication and
# PasswordAuthentication.  Depending on your PAM configuration,
# PAM authentication via ChallengeResponseAuthentication may bypass
# the setting of "PermitRootLogin without-password".
# If you just want the PAM account and session checks to run without
# PAM authentication, then enable this but set PasswordAuthentication
# and ChallengeResponseAuthentication to 'no'.
UsePAM yes

Как лог подключения посмотреть не знаю, если нужно, то скажите пож-ста как это сделать я покажу.
Ключи передавал как здесь сказано https://help.ubuntu.ru/wiki/ssh
ssh-copy-id -i ~/.ssh/id_rsa.pub

[Егоров]

Подскажите пож-ста че ему (ssh) не хватает?
вот лог и пермишин на директории:

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debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Offering RSA public key: demogen@demogen-VirtualBox
debug3: send_pubkey_test
debug2: we sent a publickey packet, wait for reply
debug1: Server accepts key: pkalg ssh-rsa blen 279
debug2: input_userauth_pk_ok: fp 8b:2e:3e:1d:38:ef:06:ea:cc:53:11:e1:ee:d7:13:aa
debug3: sign_and_send_pubkey: RSA 8b:2e:3e:1d:38:ef:06:ea:cc:53:11:e1:ee:d7:13:aa
Agent admitted failure to sign using the key.
debug1: Trying private key: /home/demogen/.ssh/id_rsa
debug3: no such identity: /home/demogen/.ssh/id_rsa: No such file or directory
debug1: Trying private key: /home/demogen/.ssh/id_dsa
debug3: no such identity: /home/demogen/.ssh/id_dsa: No such file or directory
debug1: Trying private key: /home/demogen/.ssh/id_ecdsa
debug3: no such identity: /home/demogen/.ssh/id_ecdsa: No such file or directory
debug1: Trying private key: /home/demogen/.ssh/id_ed25519
debug3: no such identity: /home/demogen/.ssh/id_ed25519: No such file or directory
debug2: we did not send a packet, disable method
debug3: authmethod_lookup password
debug3: remaining preferred: ,password
debug3: authmethod_is_enabled password
debug1: Next authentication method: password
dima@192.168.1.34's password:
debug3: packet_send2: adding 64 (len 45 padlen 19 extra_pad 64)
debug2: we sent a password packet, wait for reply
debug1: Authentications that can continue: publickey,password
Permission denied, please try again.
dima@192.168.1.34's password:
debug3: packet_send2: adding 64 (len 45 padlen 19 extra_pad 64)
debug2: we sent a password packet, wait for reply
debug1: Authentications that can continue: publickey,password
Permission denied, please try again.
dima@192.168.1.34's password:
debug3: packet_send2: adding 64 (len 45 padlen 19 extra_pad 64)
debug2: we sent a password packet, wait for reply
debug1: Authentications that can continue: publickey,password
debug2: we did not send a packet, disable method
debug1: No more authentication methods to try.
Permission denied (publickey,password).

demogen@demogen-VirtualBox:~$ ls -a -l .ssh
итого 28
drwx------  2 demogen demogen 4096 апр.  15 01:35 .
drwxr-xr-x 19 demogen demogen 4096 апр.  14 22:04 ..
-rw-r--r--  1 demogen demogen  798 апр.  15 00:49 authorized_keys
-rw-------  1 demogen demogen  444 апр.  15 00:54 known_hosts
-rw-------  1 demogen demogen  222 апр.  15 00:38 known_hosts.old
-rw-r--r--  1 demogen demogen 1679 апр.  15 00:52 serverubuntu
-rw-r--r--  1 demogen demogen  408 апр.  15 00:52 serverubuntu.pub
demogen@demogen-VirtualBox:~$

На другой машине все тоже самое, но там авторизация по ключу проходит:

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dima@ServerUbuntu:~$ ls -a -l .ssh
итого 24
drwx------  2 dima dima 4096 апр.  15 00:54 .
drwxr-xr-x 30 dima dima 4096 апр.  14 22:21 ..
-rw-r--r--  1 dima dima  408 апр.  15 00:54 authorized_keys
-rw-------  1 dima dima  222 апр.  15 00:49 known_hosts
-rw-------  1 dima dima    0 апр.  15 00:44 known_hosts.old
-rw-r--r--  1 dima dima 1679 апр.  15 00:47 virtualbox
-rw-r--r--  1 dima dima  399 апр.  15 00:47 virtualbox.pub

По состоянию на 16/06/2019 тема не получает никакого развития. Последняя активность ТС на форуме на данный момент времени: 15 Апреля 2015 (31 месяц назад).
Проблема с высокой долей вероятности не может быть воспроизведена на современном железе и современном ПО другими пользователями. Поэтому, дабы никого не путать, тема признается модератором подлежащей закрытию и последующей архивации. Закрыто
--zg_nico