[Bug 76435] New: Lenovo T440s with Ultra Dock detects 2 Monitors as one with resolution 3840x1080

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=76435

          Priority: medium
            Bug ID: 76435
          Assignee: chris at chris-wilson.co.uk
           Summary: Lenovo T440s with Ultra Dock detects 2 Monitors as one
                    with resolution 3840x1080
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: peter.loeffler at herold.at
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: Driver/intel
           Product: xorg

I have a Lenovo T440s with an Ultra Dock and 2 Samsung S27C450 monitors.
OS is Fedora 20 x86_64

[captain at HBDLAP7420 ~]$ uname -a
Linux HBDLAP7420.herold.intra 3.13.6-200.fc20.x86_64 #1 SMP Fri Mar 7 17:02:28
UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

When i connect one monitor over DVI and one over Display Port they seams to be
detected as on big monitor.

[captain at HBDLAP7420 ~]$ xrandr 
Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 8192 x 8192
eDP1 connected (normal left inverted right x axis y axis)
   1920x1080      60.0 +
   1400x1050      60.0  
   1280x1024      60.0  
   1280x960       60.0  
   1024x768       60.0  
   800x600        60.3     56.2  
   640x480        59.9  
DP1 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
DP2 connected primary 3840x1080+0+0 (normal left inverted right x axis y axis)
598mm x 336mm
   1920x1080      60.0 +
   3840x1080      60.0* 
   2560x1024      60.0  
   1680x1050      60.0  
   1600x900       60.0  
   1280x1024      75.0     60.0  
   1440x900       59.9  
   1280x800       59.8  
   1152x864       75.0  
   1280x720       60.0  
   1024x768       75.1     70.1     60.0  
   832x624        74.6  
   800x600        72.2     75.0     60.3     56.2  
   640x480        75.0     72.8     66.7     60.0  
   720x400        70.1  
HDMI2 disconnected (normal left inverted right x axis y axis)
[captain at HBDLAP7420 ~]$

[captain at HBDLAP7420 ~]$ sudo tail -f /var/log/messages
[sudo] password for captain:
Mar 21 10:54:31 HBDLAP7420 colord: Automatic metadata add
icc-2eeff3f924cdccc1a3cdf6f32dea4e8d to xrandr-Samsung Electric
Company-S27C450-HMCD100462
Mar 21 10:54:31 HBDLAP7420 colord: Automatic metadata add
icc-1555cc1afbf2eb389d5e7c9736d1478f to xrandr-Samsung Electric
Company-S27C450-HMCD100462
Mar 21 10:54:31 HBDLAP7420 colord: Automatic metadata add
icc-ca7c2359c3803aa888a8abfb9b699e9d to xrandr-Samsung Electric
Company-S27C450-HMCD100462
Mar 21 10:54:31 HBDLAP7420 colord: Automatic metadata add
icc-c0f2c092037c424fa431217482fe2708 to xrandr-Samsung Electric
Company-S27C450-HMCD100462
Mar 21 10:54:31 HBDLAP7420 colord: Device added: xrandr-Samsung Electric
Company-S27C450-HMCD100462
Mar 21 10:54:32 HBDLAP7420 colord: device removed: xrandr-Samsung Electric
Company-S27C450-HMCD100462
Mar 21 10:54:34 HBDLAP7420 colord: Automatic metadata add
icc-b415c3a98e554b5fb918a2ca4e33e3a7 to xrandr-Samsung Electric
Company-S27C450-1515733334
Mar 21 10:54:34 HBDLAP7420 colord: Automatic metadata add
icc-1961a3a64e0b78cfa296c901bada1d1e to xrandr-Samsung Electric
Company-S27C450-1515733334
Mar 21 10:54:34 HBDLAP7420 colord: Device added: xrandr-Samsung Electric
Company-S27C450-1515733334

First i thought it is a hardware limitation but whis Windoof everything works
as expected.
When i use the VGA and the Mini Display Port of the Laptop directly (without
the Ultra Dock) the two monitors are also detected as two separate with
1920x1080.

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