help with Xorg

[Perez Rodriguez, Humberto I]

Hi :

i am trying to build xorg-xserver in a isolate environment on Ubuntu 
16.10 64bit, to be exact i am building the drivers into /opt/X11R7

output from /opt/X11R7

drwxr-xr-x  2 gfx gfx 4096 Jul 27 15:42 bin
drwxr-xr-x  2 gfx gfx 4096 Jul 27 15:42 etc
drwxr-xr-x 15 gfx gfx 4096 Jul 27 15:42 include
drwxr-xr-x 11 gfx gfx 4096 Jul 27 15:42 lib
drwxr-xr-x  3 gfx gfx 4096 Jul 27 15:42 libexec
drwxr-xr-x 11 gfx gfx 4096 Jul 27 15:42 share
drwxr-xr-x  3 gfx gfx 4096 Jul 27 15:42 var


and in order to xserver-xorg takes all drivers and dependencies from 
there, i've create the following file :

$ : cat /etc/X11/xorg.conf
Section "Files"
     ModulePath "/opt/X11R7/lib/xorg/modules"
EndSection


and i've modified the following file as well :

$ : cat /usr/bin/X
#!/bin/sh
#
# Execute Xorg.wrap if it exists otherwise execute Xorg directly.
# This allows distros to put the suid wrapper in a separate package.
basedir=/opt/X11R7/bin
#basedir=/usr/lib/xorg
if [ -x "$basedir"/Xorg.wrap ]; then
         exec "$basedir"/Xorg.wrap "$@"
else
         exec "$basedir"/Xorg "$@"
fi


after do that, when reboot the system, tty7 appears as disabled and only 
i have access to tty1-6, so in tty1 i type the following command in 
order to run "Xorg" command

# chown gfx.gfx /dev/tty[0-7]

#chown gfx.gfx /dev/dri/card0

#chown gfx.gfx /dev/fb0

#chown gfx.gfx /dev/input

# usermod -a -G input gfx


then when i run the command "Xorg" i got always a black screen, please 
see relevant messages in the Xorg.0.log


(04:54 PM) [gfx at gfx-desktop] [xorg]$ : cat Xorg.0.log | grep "(EE)"
         (WW) warning, (EE) error, (NI) not implemented, (??) unknown.

(04:54 PM) [gfx at gfx-desktop] [xorg]$ : cat Xorg.0.log | grep "(WW)"
         (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[    62.765] (WW) The directory "/usr/share/fonts/misc/" does not exist.
[    62.765] (WW) The directory "/usr/share/fonts/TTF/" does not exist.
[    62.765] (WW) The directory "/usr/share/fonts/OTF/" does not exist.
[    62.766] (WW) The directory "/usr/share/fonts/Type1/" does not exist.
[    62.766] (WW) The directory "/usr/share/fonts/100dpi/" does not exist.
[    62.766] (WW) The directory "/usr/share/fonts/75dpi/" does not exist.
[    62.944] (WW) Falling back to old probe method for modesetting
[    62.944] (WW) Falling back to old probe method for fbdev
[    62.946] (WW) Falling back to old probe method for vesa
[    62.946] (WW) VGA arbiter: cannot open kernel arbiter, no multi-card 
support
[   292.184] (WW) Option "xkb_variant" requires a string value
[   292.184] (WW) Option "xkb_options" requires a string value


i think that the issue is in the line "VGA arbiter: cannot open kernel 
arbiter, no multi-card support" but i am not sure about that


the drivers builded into /opt/X11R7 were the following


╒═════╤══════════════════════╤════════════════════╕
│   # │ Driver               │ Compilation time   │
╞═════╪══════════════════════╪════════════════════╡
│   1 │ drm                  │ (0h:0m:32s)        │
├─────┼──────────────────────┼────────────────────┤
│   2 │ mesa                 │ (0h:3m:11s)        │
├─────┼──────────────────────┼────────────────────┤
│   3 │ macros               │ (0h:0m:4s)         │
├─────┼──────────────────────┼────────────────────┤
│   4 │ xproto               │ (0h:0m:7s)         │
├─────┼──────────────────────┼────────────────────┤
│   5 │ glproto              │ (0h:0m:6s)         │
├─────┼──────────────────────┼────────────────────┤
│   6 │ dri2proto            │ (0h:0m:6s)         │
├─────┼──────────────────────┼────────────────────┤
│   7 │ xserver              │ (0h:2m:2s)         │
├─────┼──────────────────────┼────────────────────┤
│   8 │ libXfont             │ (0h:0m:21s)        │
├─────┼──────────────────────┼────────────────────┤
│   9 │ xf86-input-evdev     │ (0h:0m:13s)        │
├─────┼──────────────────────┼────────────────────┤
│  10 │ xf86-input-libinput  │ (0h:0m:13s)        │
├─────┼──────────────────────┼────────────────────┤
│  11 │ xf86-video-fbdev     │ (0h:0m:12s)        │
├─────┼──────────────────────┼────────────────────┤
│  12 │ xf86-video-vesa      │ (0h:0m:12s)        │
├─────┼──────────────────────┼────────────────────┤
│  13 │ xf86-video-vmware    │ (0h:0m:13s)        │
├─────┼──────────────────────┼────────────────────┤
│  14 │ xf86-video-qxl       │ (0h:0m:14s)        │
├─────┼──────────────────────┼────────────────────┤
│  15 │ xf86-video-amdgpu    │ (0h:0m:27s)        │
├─────┼──────────────────────┼────────────────────┤
│  16 │ xf86-video-ati       │ (0h:0m:17s)        │
├─────┼──────────────────────┼────────────────────┤
│  17 │ xf86-video-chips     │ (0h:0m:18s)        │
├─────┼──────────────────────┼────────────────────┤
│  18 │ x11proto             │ (0h:0m:7s)         │
├─────┼──────────────────────┼────────────────────┤
│  19 │ libxtrans            │ (0h:0m:6s)         │
├─────┼──────────────────────┼────────────────────┤
│  20 │ libX11               │ (0h:0m:54s)        │
├─────┼──────────────────────┼────────────────────┤
│  21 │ libXext              │ (0h:0m:18s)        │
├─────┼──────────────────────┼────────────────────┤
│  22 │ xf86-video-intel     │ (0h:0m:43s)        │
├─────┼──────────────────────┼────────────────────┤
│  23 │ xkbcomp              │ (0h:0m:8s)         │
├─────┼──────────────────────┼────────────────────┤
│  24 │ xf86-input-wacom     │ (0h:0m:26s)        │
├─────┼──────────────────────┼────────────────────┤
│  25 │ pixman               │ (0h:1m:32s)        │
├─────┼──────────────────────┼────────────────────┤
│  26 │ libpciaccess         │ (0h:0m:14s)        │
├─────┼──────────────────────┼────────────────────┤
│  27 │ libinput             │ (0h:0m:26s)        │
├─────┼──────────────────────┼────────────────────┤
│  28 │ xkeyboard-config     │ (0h:0m:9s)         │
├─────┼──────────────────────┼────────────────────┤
│  29 │ xf86-input-mouse     │ (0h:0m:12s)        │
├─────┼──────────────────────┼────────────────────┤
│  30 │ xf86-input-keyboard  │ (0h:0m:12s)        │
├─────┼──────────────────────┼────────────────────┤
│  31 │ xf86-input-synaptics │ (0h:0m:13s)        │
├─────┼──────────────────────┼────────────────────┤
│  32 │ libva                │ (0h:0m:20s)        │
├─────┼──────────────────────┼────────────────────┤
│  33 │ libva-utils          │ (0h:0m:19s)        │
├─────┼──────────────────────┼────────────────────┤
│  34 │ intel-vaapi-driver   │ (0h:0m:19s)        │
├─────┼──────────────────────┼────────────────────┤
│  35 │ cairo                │ (0h:1m:14s)        │
╘═════╧══════════════════════╧════════════════════╛



i will appreciate you help here because i am stuck with this



Cheers