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On 2012-12-11T12:16:29+00:00 Fahim-ayat wrote:

Created attachment 71332
log file in /var/log/Xorg.1.log

I'm running Archlinux 2012 - kernel 3.6.9-1-ARCH
When plugging two monitors (the third one is laptop's LCD) x server fails to 
start and shows "[drm:drm_crtc_helper_set_config] *ERROR* failed to set mode on 
[CRTC:7] on two monitors and turns off the third one.
I'm using intel core i7 3612qm (Ivy bridge) and according to inel 
Specifications at http://ark.intel.com/products/64901 , inel hd 4000 supports 
up to 3 monitors.
xorg server version lines :
X.Org X Server 1.13.0.902 (1.13.1 RC 2)
Release Date: 2012-12-06

Attached log file
Thanx in advance

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1124328/comments/0

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On 2012-12-11T13:10:29+00:00 Chris Wilson wrote:

xrandr please

Note that only 3 monitors are support by Ivybridge only if 2 of those
are identical and running at the same resolution (such as DP+DP,
HDMI+HDMI etc).

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1124328/comments/1

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On 2012-12-11T13:34:27+00:00 Fahim-ayat wrote:

Thanx a lot for quick reply

xrandr says "can't open display"
when I disable my lcd in xorg conf I get

Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 32767 x 32767
VGA1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 477mm x 
268mm
   1920x1080      60.0*+
   1600x1200      60.0  
   1680x1050      60.0  
   1680x945       60.0  
   1400x1050      60.0  
   1600x900       60.0  
   1280x1024      75.0     60.0  
   1440x900       75.0     59.9  
   1280x960       60.0  
   1366x768       60.0  
   1360x768       60.0  
   1280x800       74.9     59.8  
   1152x864       75.0  
   1280x768       74.9     59.9  
   1024x768       75.1     70.1     60.0  
   1024x576       60.0  
   832x624        74.6  
   800x600        72.2     75.0     60.3     56.2  
   848x480        60.0  
   640x480        72.8     75.0     66.7     60.0  
   720x400        70.1  
HDMI1 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 
477mm x 268mm
   1920x1080      60.0*+
   1600x1200      60.0  
   1680x1050      59.9  
   1680x945       60.0  
   1400x1050      59.9  
   1600x900       60.0  
   1280x1024      75.0     60.0  
   1440x900       75.0     59.9  
   1280x960       60.0  
   1366x768       60.0  
   1360x768       60.0  
   1280x800       74.9     59.9  
   1152x864       75.0  
   1280x768       74.9     60.0  
   1280x720       60.0  
   1024x768       75.1     70.1     60.0  
   1024x576       60.0  
   832x624        74.6  
   800x600        72.2     75.0     60.3     56.2  
   848x480        60.0  
   720x480        59.9  
   640x480        72.8     75.0     66.7     60.0  
   720x400        70.1  
DP1 disconnected (normal left inverted right x axis y axis)

I have two identical monitors, but one of them is connected through HDMI
and the other is connected through VGA

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1124328/comments/2

------------------------------------------------------------------------
On 2012-12-11T14:03:39+00:00 Chris Wilson wrote:

You're going to be able to combine LVDS+HDMI+VGA, that's unsupported by
the hw. Reporting the limitations better is something we are working on.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1124328/comments/3

------------------------------------------------------------------------
On 2012-12-11T14:14:36+00:00 Fahim-ayat wrote:

Thanx and sorry to bother

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1124328/comments/4


** Changed in: linux
       Status: Unknown => Invalid

** Changed in: linux
   Importance: Unknown => Medium

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu.
https://bugs.launchpad.net/bugs/1124328

Title:
  *ERROR* failed to set mode on [CRTC:7]

Status in The Linux Kernel:
  Invalid
Status in “linux” package in Ubuntu:
  Incomplete
Status in “xserver-xorg-video-intel” package in Ubuntu:
  Opinion
Status in Fedora:
  Unknown

Bug description:
  When I boot I receive this error. This is the same bug being tracked
  (and possibly ignored) by redhat. Please see the link for logs that
  others have submitted etc...

  https://bugzilla.redhat.com/show_bug.cgi?id=753050

  I am using a Thinkpad T430s docked with DVI monitor and VGA monitor (a
  common configuration I would imagine). I read that there is a hardware
  limitation for supporting LVDS+DVI+VGA concurrently, but since the
  laptop is docked (and screen closed) I don't believe this explains the
  bug.

  For the record, I am using 
  Ubuntu Release:       12.10
  kernel 3.5.0-23-generic
  Graphics: 00:02.0 VGA compatible controller [0300]: Intel Corporation 3rd Gen 
Core processor Graphics Controller [8086:0166] (rev 09)
        Subsystem: Lenovo Device [17aa:21fb]
        Kernel driver in use: i915

  
  Please let me know how I can be of any further help.

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