Re: Xorg -configure fails with "created screens does not match number of detected devices"

[Floris <jkfloris@dds.nl>]

Op Thu, 02 Apr 2015 12:32:48 +0200 schreef venkat <venkat.s@vortexindia.co.in>:

Looks good. The right driver is used.

Add a Screen and Monitor selection to the Xorg.conf

Section "Screen"
  Identifier "Screen0"
  Device "gma500_gfx"
  Monitor "Monitor0"

EndSection

Section "Monitor"
  Identifier "Monitor0"
  VendorName "Monitor Vendor"
  ModelName "Monitor Model"
EndSection

The system boots but when GDM starts i just see a blank screen..

Switch back to tty1, kill gdm and start the X server with startx

Yes i tried that and i get an error: no screens found

[    21.958] (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so
[    21.959] (II) Module modesetting: vendor="X.Org Foundation"
[    21.959]     compiled for 1.12.1.902, module version = 0.3.0
[    21.959]     Module class: X.Org Video Driver
[    21.959]     ABI class: X.Org Video Driver, version 12.0
[    21.959] (II) modesetting: Driver for Modesetting Kernel Drivers: kms
[    21.959] (++) using VT number 8

[    21.967] (WW) Falling back to old probe method for modesetting
[    21.967] (II) UnloadModule: "modesetting"
[    21.967] (EE) Screen(s) found, but none have a usable configuration.
[    21.967]
Fatal server error:
[    21.967] no screens found
[    21.967]
Please consult the The X.Org Foundation support
     at http://wiki.x.org
 for help.

There are a lot of trial and error stories about the gma500 module.

An other possible solution. add

Option "IgnoreACPI" "yes"

to the device section of your xorg.conf

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=533450

Success,

floris