first and only X needs to be on tty7

[Hans de Goede]

Hi,

On 05/05/2014 05:45 PM, Felix Miata wrote:
> On 2014-05-05 12:34 (GMT+0200) Lennart Poettering composed:
> 
>> Felix Miata wrote:
> 
>>> How can I get it to go there and stay there? When starting F21 in
>>> multi-user, logging in on tty3 and running startx, KDE shows up on
>>> tty3, where, as it's currently broken[1], it needs to be killed to
>>> escape it. Ctrl-Alt-BS fails to kill it (in spite of xorg.con*
>>> entries intended that Ctrl-Alt-BS be enabled for that purpose), and
>>> switching to tty3 is unavailable to use Ctrl-C to kill it as can be
>>> done when started from tty3 but running on tty7. The only way out is
>>> logging in somewhere else, or CAD. This shouldn't be.
> 
>>> [1] https://bugzilla.redhat.com/show_bug.cgi?id=1092852
> 
>> To get the device permissions right startx can only "upgrade" a text
>> session to a graphical one,
> 
> There is a relatively recent change, as it used to be that the first X instance would always start on tty7 no matter how started. I still have a DM running there if in graphical target.
> 
> What is this permissions business? IOW, what search terms would lead me to an explanation of the changes, or at least a non-simplistic but not overly detailed why they occurred?
> 
>>  it cannot open a new VT.
> 
> Why?

Part of the reasons are explained here:
http://hansdegoede.livejournal.com/14268.html

Note that this only is valid from F-21 on-wards, but it is strongly
related to why it cannot be done either in F-20.

Regards,

Hans