Thanks Dr. Nikolaus Klepp and Felix Miata,
the problem is that xorg puts wrong video mode.
Both tdm and lightdm works fine.

2017-07-27 18:52 GMT-03:00 Felix Miata <mrmazda@earthlink.net>:
Sebastião Guerra composed on 2017-07-27 16:28 (UTC-0300):

> Error messages: http://imgur.com/YS2vGqB

> Can't login with root or normal user

> System hangs on black screen

> ls -l /usr/bin/Xorg
> -rwsr-xr-x. 1 root root 2409560 Nov  5  2016 /usr/bin/Xorg

There is a slight possibility that changing that is a solution. You can try as
root or using sudo:

        chmod 4711 /usr/bin/Xorg

The result would be -rws--x--x 1 root root 2409560 Nov  5  2016 /usr/bin/Xorg

However, the problem is more likely elsewhere. Your screenshot mainly only tells
us that Xorg cannot run. We need more information.

Please share your Xorg.0.log and/or Xorg.1.log file(s) from /var/log/ or from
~/.local/share/xorg/ wherever you find it/them. You can use fpaste to paste
directly from a shell prompt. From any web browser any kind of text paste will
do, such as https://pastebin.com/

One possible problem is that TDM has not been configured and needs to be, rather
than trying to run TDE using startx. It's also possibly that Xorg is simply
broken on that installation. The log will give us something to work from.
--
"The wise are known for their understanding, and pleasant
words are persuasive." Proverbs 16:21 (New Living Translation)

 Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata  ***  http://fm.no-ip.com/

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