# cat /var/log/Xorg.0.log
[   403.249] 
X.Org X Server 1.19.5
Release Date: 2017-10-12
[   403.249] X Protocol Version 11, Revision 0
[   403.249] Build Operating System: Linux 4.12.12-gentoo x86_64 Gentoo
[   403.249] Current Operating System: Linux tux 4.12.12-gentoo #4 SMP Fri Dec 22 18:57:54 MSK 2017 x86_64
[   403.249] Kernel command line: BOOT_IMAGE=/vmlinuz-4.12.12-gentoo root=/dev/sdb3 ro nomodeset
[   403.249] Build Date: 24 December 2017  08:09:52PM
[   403.249]  
[   403.249] Current version of pixman: 0.34.0
[   403.249] 	Before reporting problems, check http://wiki.x.org
	to make sure that you have the latest version.
[   403.249] Markers: (--) probed, (**) from config file, (==) default setting,
	(++) from command line, (!!) notice, (II) informational,
	(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[   403.249] (==) Log file: "/var/log/Xorg.0.log", Time: Mon Dec 25 01:46:49 2017
[   403.250] (==) Using config directory: "/etc/X11/xorg.conf.d"
[   403.250] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[   403.251] (==) No Layout section.  Using the first Screen section.
[   403.251] (==) No screen section available. Using defaults.
[   403.251] (**) |-->Screen "Default Screen Section" (0)
[   403.251] (**) |   |-->Monitor "<default monitor>"
[   403.251] (==) No device specified for screen "Default Screen Section".
	Using the first device section listed.
[   403.251] (**) |   |-->Device "Intel Graphics"
[   403.251] (==) No monitor specified for screen "Default Screen Section".
	Using a default monitor configuration.
[   403.251] (==) Automatically adding devices
[   403.251] (==) Automatically enabling devices
[   403.251] (==) Automatically adding GPU devices
[   403.251] (==) Max clients allowed: 256, resource mask: 0x1fffff
[   403.251] (WW) The directory "/usr/share/fonts/misc/" does not exist.
[   403.251] 	Entry deleted from font path.
[   403.251] (WW) The directory "/usr/share/fonts/TTF/" does not exist.
[   403.251] 	Entry deleted from font path.
[   403.251] (WW) The directory "/usr/share/fonts/OTF/" does not exist.
[   403.251] 	Entry deleted from font path.
[   403.251] (WW) The directory "/usr/share/fonts/Type1/" does not exist.
[   403.251] 	Entry deleted from font path.
[   403.251] (WW) The directory "/usr/share/fonts/100dpi/" does not exist.
[   403.251] 	Entry deleted from font path.
[   403.251] (WW) The directory "/usr/share/fonts/75dpi/" does not exist.
[   403.251] 	Entry deleted from font path.
[   403.251] (==) FontPath set to:
	
[   403.251] (==) ModulePath set to "/usr/lib64/xorg/modules"
[   403.251] (II) The server relies on udev to provide the list of input devices.
	If no devices become available, reconfigure udev or disable AutoAddDevices.
[   403.251] (II) Loader magic: 0x81cc60
[   403.251] (II) Module ABI versions:
[   403.251] 	X.Org ANSI C Emulation: 0.4
[   403.251] 	X.Org Video Driver: 23.0
[   403.251] 	X.Org XInput driver : 24.1
[   403.251] 	X.Org Server Extension : 10.0
[   403.252] (--) PCI:*(0:0:2:0) 8086:5916:103c:8363 rev 2, Mem @ 0xb2000000/16777216, 0xc0000000/268435456, I/O @ 0x00006000/64, BIOS @ 0x????????/131072
[   403.252] (--) PCI: (0:1:0:0) 10de:134d:103c:8363 rev 162, Mem @ 0xb3000000/16777216, 0xa0000000/268435456, 0xb0000000/33554432, I/O @ 0x00005000/128
[   403.252] (II) LoadModule: "glx"
[   403.253] (II) Loading /usr/lib64/xorg/modules/extensions/libglx.so
[   403.264] (II) Module glx: vendor="X.Org Foundation"
[   403.264] 	compiled for 1.19.5, module version = 1.0.0
[   403.264] 	ABI class: X.Org Server Extension, version 10.0
[   403.264] (II) LoadModule: "modesetting"
[   403.264] (II) Loading /usr/lib64/xorg/modules/drivers/modesetting_drv.so
[   403.265] (II) Module modesetting: vendor="X.Org Foundation"
[   403.265] 	compiled for 1.19.5, module version = 1.19.5
[   403.265] 	Module class: X.Org Video Driver
[   403.265] 	ABI class: X.Org Video Driver, version 23.0
[   403.265] (II) modesetting: Driver for Modesetting Kernel Drivers: kms
[   403.265] (--) using VT number 7

[   403.268] (EE) open /dev/dri/card0: No such file or directory
[   403.268] (WW) Falling back to old probe method for modesetting
[   403.268] (EE) open /dev/dri/card0: No such file or directory
[   403.268] (EE) Screen 0 deleted because of no matching config section.
[   403.268] (II) UnloadModule: "modesetting"
[   403.268] (EE) Device(s) detected, but none match those in the config file.
[   403.268] (EE) 
Fatal server error:
[   403.268] (EE) no screens found(EE) 
[   403.268] (EE) 
Please consult the The X.Org Foundation support 
	 at http://wiki.x.org
 for help. 
[   403.268] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[   403.268] (EE) 
[   403.274] (EE) Server terminated with error (1). Closing log file.