为什么RSA SSHauthentication只能在控制台login后才起作用？

我在我的一台Ubuntu服务器上设置了RSA身份validation，但每次重新启动后，我都无法通过ssh RSAlogin。 为了用sshlogin，我需要先通过控制台login，然后RSA开始工作。 为什么？？？

以下是我的sshdconfiguration文件以及控制台login和之前的ssh -vv命令的输出。 。

在控制台login之前：

debug1: SSH2_MSG_SERVICE_ACCEPT received debug2: key: /Users/smorhaim/.ssh/smorhaim (0x7ff8d8c242c0) debug2: key: /Users/smorhaim/.ssh/id_rsaadmin (0x7ff8d8c24cf0) debug1: Authentications that can continue: publickey debug1: Next authentication method: publickey debug1: Offering RSA public key: /Users/smorhaim/.ssh/smorhaim debug2: we sent a publickey packet, wait for reply debug1: Authentications that can continue: publickey debug1: Offering RSA public key: /Users/smorhaim/.ssh/id_rsaadmin debug2: we sent a publickey packet, wait for reply debug1: Authentications that can continue: publickey debug2: we did not send a packet, disable method debug1: No more authentication methods to try. Permission denied (publickey). 

控制台login后：

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 debug1: SSH2_MSG_SERVICE_ACCEPT received debug2: key: /Users/smorhaim/.ssh/smorhaim (0x7f91c14242c0) debug2: key: /Users/smorhaim/.ssh/id_rsaadmin (0x7f91c1424ae0) debug1: Authentications that can continue: publickey debug1: Next authentication method: publickey debug1: Offering RSA public key: /Users/smorhaim/.ssh/smorhaim debug2: we sent a publickey packet, wait for reply debug1: Server accepts key: pkalg ssh-rsa blen 279 debug2: input_userauth_pk_ok: fp b1:d5:90:43:be:43:52:a9:7f:05:c7:04:86:57:b3:ff debug1: Authentication succeeded (publickey). Authenticated to 10.10.30.151 ([10.10.30.151]:22). 

sshdconfiguration：

 Port 22 Protocol 2 ListenAddress 10.10.30.151 UsePrivilegeSeparation yes SyslogFacility AUTHPRIV PermitRootLogin no PasswordAuthentication no ChallengeResponseAuthentication no UsePAM yes X11Forwarding yes