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[Bug 1373397] Re: External monitor scrolling huge virtual buffer with laptop monitor

 

Here is the output of xrandr:

============================
$ xrandr
Screen 0: minimum 8 x 8, current 2966 x 1200, maximum 16384 x 16384
DP-0 connected primary 1600x1200+1366+0 (normal left inverted right x axis y axis) 408mm x 306mm
   1600x1200      60.0*+
   1280x1024      85.0     75.0     60.0  
   1280x960       60.0  
   1024x768       85.0     75.0     60.0  
   800x600        85.1     60.3  
   640x480        85.0     75.0     59.9  
DP-1 disconnected (normal left inverted right x axis y axis)
LVDS1 connected 1366x768+0+432 309mm x 174mm
   1366x768       60.0*+   40.0  
   1360x768       59.8     60.0  
   1024x768       60.0  
   800x600        60.3     56.2  
   640x480        59.9  
VGA1 disconnected
HDMI1 disconnected
DP1 disconnected
VIRTUAL1 disconnected
  1024x768 (0x2be)   65.0MHz
        h: width  1024 start 1048 end 1184 total 1344 skew    0 clock   48.4KHz
        v: height  768 start  771 end  777 total  806           clock   60.0Hz
  800x600 (0x2c0)   40.0MHz
        h: width   800 start  840 end  968 total 1056 skew    0 clock   37.9KHz
        v: height  600 start  601 end  605 total  628           clock   60.3Hz
  640x480 (0x2c3)   25.2MHz
        h: width   640 start  656 end  752 total  800 skew    0 clock   31.5KHz
        v: height  480 start  490 end  492 total  525           clock   59.9Hz
============================

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Packages, which is subscribed to nvidia-prime in Ubuntu.
https://bugs.launchpad.net/bugs/1373397

Title:
  External monitor scrolling huge virtual buffer with laptop monitor

Status in “nvidia-prime” package in Ubuntu:
  New

Bug description:
  - Dell XPS 14Z
  - NVidia GeForce GT 520M + Intel i915
  - nvidia-prime
  - Mini-DP connected to DVI of external HP LP2065 monitor
  - Ubuntu 14.04
  - nvidia 331 drivers (from Ubuntu repos)

  If my external monitor is located at top of laptop screep:
  - when I move the mouse cursor to the bottom of the external screen, it scroll the entire screen to show the laptop screen inside the external monitor, just like a huge virtual screen.

  If my external monitor is located at right. everything is fine, there
  is no scrolling.

  I'm not sure this is a bug. I searched the web and could not find a
  way to properly fix this. Since the behavior change with the sideways
  arrangement I guess is a bug.

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References