cannot login from tty while can login with xfreerdp

[guyuming]

my desktop use gentoo with systemd.

i disabled the display managers (sddm,gdm), and start desktop environment by running startx in tty.

i installed net-misc/xrdp package from the ace overlay recently.

all of a sudden, after reboot, i cannot login tty anymore, even with the root account.

but i can login with xfreerdp from other machine.

i don't mean that xrdp cause the problem, that can be just a coincident, i only modified ~/.xinitrc, ~/.xprofile files manually after xrdp installation, i don't think it will affect tty login.

i read some similar case on web which talks about reviewing the /var/log/messages and /var/log/secure, but i don't have these files on my machine.

after i input username and password, tty just refreshes the screen and let me input again, no error messages displayed.

sudo journalctl -b | tail

return no error too, just what follows:

[eccerr0r]

If you did a system update recently and pam got upgraded, you might want to ensure your etc-update is up to date especially in your /etc/pam.d/* .

But yes most of your logs should be in the journal and visible with journalctl - and not in /var/log/(messages|secure).
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Intel Core i7 2700K/Radeon R7 250/24GB DDR3/256GB SSD
What am I supposed watching?

[guyuming]