On half the distros on the planet, if you want X to work you need to
suid /usr/bin/X*.

SteveT


On Sat, 17 Oct 2015 10:19:28 +0200
aitor_czr <aitor_czr@???> wrote:

> Hi Rob,
>
> By default, Devuan uses the seventh tty for X sessions. The permision
> is denied because xserver-xorg is not SUID root. If it is called from
> another SUID root program (a display manager like slim or lightdm) it
> will work. But first, you can try reinstalling xserver-xorg package
> to set the correct permissions, once created the user.
>
> Cheers,
>
> Aitor.
>
> On 17/10/15 00:44, Rob <Nuisance@???> wrote:
> > After upgrade tonight came out of Xorg to restart openbox.
> >
> > I tried to start Xorg but it failed with "xf86OpenConsole cannot
> > open /dev/tty0 ( no such file or directory)
> >
> > /dev/tty0 was there so assumed permission problem. Temporarily
> > added my user to tty group and tried again.
> >
> > This time Xorg failed to start with "xf86OpenConsole cannot open
> > Virtual Console 7 ( permisson denied.)
> >
> > How to resolve?
> >
> > Xorg.log below
> >
> > Thanks
> >
> > Rob
> >
> > [ 5450.132]
> > X.Org X Server 1.17.2
> > Release Date: 2015-06-16
> > [ 5450.132] X Protocol Version 11, Revision 0
> > [ 5450.132] Build Operating System: Linux 4.2.0-1-amd64 x86_64
> > Debian [ 5450.132] Current Operating System: Linux debian
> > 3.18.5preempt #1 SMP PREEMPT Tue Feb 3 21:18:50 GMT 2015 x86_64
> > [ 5450.132] Kernel command line:
> > BOOT_IMAGE=/boot/vmlinuz-3.18.5preempt root=/dev/sda1 ro
> > [ 5450.132] Build Date: 06 October 2015 07:27:47AM [ 5450.132]
> > xorg-server 2:1.17.2-3 (http://www.debian.org/support) [ 5450.132]
> > Current version of pixman: 0.33.2 [ 5450.132] Before reporting
> > problems, checkhttp://wiki.x.org to make sure that you have the
> > latest version. [ 5450.132] Markers: (--) probed, (**) from config
> > file, (==) default setting, (++) from command line, (!!) notice,
> > (II) informational, (WW) warning, (EE) error, (NI) not implemented,
> > (??) unknown. [ 5450.133] (==) Log file:
> > "/home/rob/.local/share/xorg/Xorg.0.log", Time: Fri Oct 16 23:40:02
> > 2015 [ 5450.133] (==) Using system config directory
> > "/usr/share/X11/xorg.conf.d" [ 5450.133] (==) No Layout section.
> > Using the first Screen section. [ 5450.133] (==) No screen section
> > available. Using defaults. [ 5450.133] (**) |-->Screen "Default
> > Screen Section" (0) [ 5450.133] (**) | |-->Monitor "<default
> > monitor>" [ 5450.133] (==) No monitor specified for screen "Default
> > monitor>Screen Section". Using a default monitor configuration.
> > monitor>[ 5450.133] (==) Automatically adding devices
> > [ 5450.133] (==) Automatically enabling devices
> > [ 5450.133] (==) Automatically adding GPU devices
> > [ 5450.133] (WW) The directory "/usr/share/fonts/X11/cyrillic" does
> > not exist. [ 5450.133] Entry deleted from font path.
> > [ 5450.133] (==) FontPath set to:
> > /usr/share/fonts/X11/misc,
> > /usr/share/fonts/X11/100dpi/:unscaled,
> > /usr/share/fonts/X11/75dpi/:unscaled,
> > /usr/share/fonts/X11/Type1,
> > /usr/share/fonts/X11/100dpi,
> > /usr/share/fonts/X11/75dpi,
> > built-ins
> > [ 5450.133] (==) ModulePath set to "/usr/lib/xorg/modules"
> > [ 5450.133] (II) The server relies on udev to provide the list of
> > input devices. If no devices become available, reconfigure udev or
> > disable AutoAddDevices. [ 5450.133] (II) Loader magic:
> > 0x7f18511c4de0 [ 5450.133] (II) Module ABI versions:
> > [ 5450.133] X.Org ANSI C Emulation: 0.4
> > [ 5450.133] X.Org Video Driver: 19.0
> > [ 5450.133] X.Org XInput driver : 21.0
> > [ 5450.133] X.Org Server Extension : 9.0
> > [ 5450.134] (EE) systemd-logind: failed to get session: The name
> > org.freedesktop.login1 was not provided by any .service files
> > [ 5450.134] (II) xfree86: Adding drm device (/dev/dri/card0)
> > [ 5450.134] (EE) /dev/dri/card0: failed to set DRM interface
> > version 1.4: Permission denied [ 5450.136] (--) PCI:*(0:1:0:0)
> > 10de:1381:19da:2346 rev 162, Mem @ 0xfd000000/16777216,
> > 0xc0000000/268435456, 0xd0000000/33554432, I/O @ 0x0000e000/128,
> > BIOS @ 0x????????/524288 [ 5450.136] (II) LoadModule:
> > "glx" [ 5450.136] (II)
> > Loading /usr/lib/xorg/modules/linux/libglx.so [ 5450.147] (II)
> > Module glx: vendor="NVIDIA Corporation" [ 5450.147] compiled for
> > 4.0.2, module version = 1.0.0 [ 5450.147] Module class: X.Org
> > Server Extension [ 5450.147] (II) NVIDIA GLX Module 340.93 Wed Aug
> > 19 16:23:51 PDT 2015 [ 5450.147] (==) Matched nouveau as
> > autoconfigured driver 0 [ 5450.147] (==) Matched nv as
> > autoconfigured driver 1 [ 5450.147] (==) Matched modesetting as
> > autoconfigured driver 2 [ 5450.147] (==) Matched fbdev as
> > autoconfigured driver 3 [ 5450.147] (==) Matched vesa as
> > autoconfigured driver 4 [ 5450.147] (==) Assigned the driver to the
> > xf86ConfigLayout [ 5450.147] (II) LoadModule: "nouveau" [ 5450.147]
> > (II) Loading /usr/lib/xorg/modules/drivers/nouveau_drv.so
> > [ 5450.147] (II) Module nouveau: vendor="X.Org
> > Foundation" [ 5450.147] compiled for 1.17.1, module version =
> > 1.0.11 [ 5450.147] Module class: X.Org Video Driver [ 5450.147] ABI
> > class: X.Org Video Driver, version 19.0 [ 5450.147] (II)
> > LoadModule: "nv" [ 5450.148] (WW) Warning, couldn't open module nv
> > [ 5450.148] (II) UnloadModule: "nv" [ 5450.148] (II) Unloading nv
> > [ 5450.148] (EE) Failed to load module "nv" (module does not exist,
> > 0) [ 5450.148] (II) LoadModule: "modesetting" [ 5450.148] (II)
> > Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so
> > [ 5450.148] (II) Module modesetting: vendor="X.Org
> > Foundation" [ 5450.148] compiled for 1.17.2, module version =
> > 1.17.2 [ 5450.148] Module class: X.Org Video Driver [ 5450.148] ABI
> > class: X.Org Video Driver, version 19.0 [ 5450.148] (II)
> > LoadModule: "fbdev" [ 5450.148] (II)
> > Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so [ 5450.148] (II)
> > Module fbdev: vendor="X.Org Foundation" [ 5450.148] compiled for
> > 1.17.1, module version = 0.4.4 [ 5450.148] Module class: X.Org
> > Video Driver [ 5450.148] ABI class: X.Org Video Driver, version 19.0
> > [ 5450.148] (II) LoadModule: "vesa"
> > [ 5450.148] (II) Loading /usr/lib/xorg/modules/drivers/vesa_drv.so
> > [ 5450.148] (II) Module vesa: vendor="X.Org Foundation"
> > [ 5450.148] compiled for 1.17.1, module version = 2.3.3
> > [ 5450.148] Module class: X.Org Video Driver
> > [ 5450.148] ABI class: X.Org Video Driver, version 19.0
> > [ 5450.148] (II) NOUVEAU driver Date: Thu Aug 28 03:57:48 2014 +0200
> > [ 5450.148] (II) NOUVEAU driver for NVIDIA chipset families :
> > [ 5450.148] RIVA TNT (NV04)
> > [ 5450.148] RIVA TNT2 (NV05)
> > [ 5450.148] GeForce 256 (NV10)
> > [ 5450.148] GeForce 2 (NV11, NV15)
> > [ 5450.148] GeForce 4MX (NV17, NV18)
> > [ 5450.148] GeForce 3 (NV20)
> > [ 5450.148] GeForce 4Ti (NV25, NV28)
> > [ 5450.148] GeForce FX (NV3x)
> > [ 5450.148] GeForce 6 (NV4x)
> > [ 5450.148] GeForce 7 (G7x)
> > [ 5450.148] GeForce 8 (G8x)
> > [ 5450.148] GeForce GTX 200 (NVA0)
> > [ 5450.148] GeForce GTX 400 (NVC0)
> > [ 5450.148] (II) modesetting: Driver for Modesetting Kernel
> > Drivers: kms [ 5450.148] (II) FBDEV: driver for framebuffer: fbdev
> > [ 5450.148] (II) VESA: driver for VESA chipsets: vesa
> > [ 5450.148] (--) using VT number 7
> >
> > [ 5450.148] (EE)
> > Fatal server error:
> > [ 5450.148] (EE) xf86OpenConsole: Cannot open virtual console 8
> > (Permission denied) [ 5450.148] (EE)
> > [ 5450.148] (EE)
> > Please consult the The X.Org Foundation support
> > athttp://wiki.x.org
> > for help.
> > [ 5450.148] (EE) Please also check the log file at
> > "/home/rob/.local/share/xorg/Xorg.0.log" for additional
> > information. [ 5450.149] (EE)
>