Bug#856351: parse_vt_settings: Permission denied <Cannotopen/dev/tty0>

[Jörgen Grahn <grahn@snipabacken.se>]

I got bitten by #856351 after upgrading to Debian 9 yesterday. I want
to be able to boot up, log in without any fancy login manager (not to
mention Desktop Environments), and then run 'startx' and go X11.  I
need to do this repeatedly, on different virtual consoles -- so I can
have simultaneous graphical logins.  Or rather, so I can have a login
and my Mom can have another one.

Anyway, what worked for me was to add

  needs_root_rights=yes

to /etc/X11/Xwrapper.config, as described in the corresponding man
page.  I haven't checked why this is needed, with my particular
hardware. (And I haven't verified that it fits my two-user scenario
above; it would be sad and a serious regression if it didn't.)

/J�n

-- 
  // J�n Grahn                  | mot du jour: Terylen             
\X/ <grahn@snipabacken.se>         |