[systemsettings] [Bug 335898] New: Display Configuration not setting the monitor location correctly

[Dima Ryazanov]

https://bugs.kde.org/show_bug.cgi?id=335898

            Bug ID: 335898
           Summary: Display Configuration not setting the monitor location
                    correctly
    Classification: Unclassified
           Product: systemsettings
           Version: 4.11.9
          Platform: Kubuntu Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: kcm_randr
          Assignee: unassigned-bugs at kde.org
          Reporter: dima at gmail.com
                CC: hbock at providence.edu

I've been using Display Configuration for a while - but I started having
problems now. I have a laptop monitor (LVDS1) with an external monitor (DP1) to
the right of it; see the screenshot of the config. After applying the changes,
I get the correct screen resolution - but not the offsets. Both monitors start
at 0x0, so the laptop monitor just shows a part of the external monitor, and I
effectively have a single screen.

Here's the output of xrandr:

Screen 0: minimum 320 x 200, current 2560 x 1440, maximum 32767 x 32767
LVDS1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 293mm x
164mm
   1366x768       60.0 +   40.0  
   1360x768       59.8     60.0  
   1024x768       60.0  
   800x600        60.3     56.2  
   640x480        59.9  
VGA1 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
DP1 connected 2560x1440+0+0 (normal left inverted right x axis y axis) 597mm x
336mm
   2560x1440      60.0*+
   1920x1200      59.9  
   1920x1080      60.0     60.0     50.0     59.9     24.0     24.0  
   1920x1080i     60.1     50.0     60.0  
   1600x1200      60.0  
   1680x1050      60.0  
   1280x1024      75.0     60.0  
   1280x800       59.8  
   1152x864       75.0  
   1280x720       60.0     50.0     59.9  
   1024x768       75.1     60.0  
   800x600        75.0     60.3  
   720x576        50.0  
   720x480        60.0     59.9  
   640x480        75.0     60.0     59.9  
   720x400        70.1  
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
   (0x48)   71.0MHz
        h: width  1366 start 1414 end 1446 total 1498 skew    0 clock   47.4KHz
        v: height  768 start  769 end  773 total  790           clock   60.0Hz

When I ran "xrandr --output DP1 --right-of LVDS1", it worked as expected.
Display Configurations keeps showing the old setup, though, and doesn't do
anything if I change it and click "Apply".

Reproducible: Didn't try

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