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getcha

Member

Registered: 2016-10-28

Posts: 19

Dual screen issue with HP EliteBook Folio 1040 G3 and DELL P2415Q

I bought an external DELL P2415Q screen which doesn't work at all with my laptop : the screen only display error message : "There is no signal coming from your computer"

xrandr output :

Screen 0: minimum 8 x 8, current 5760 x 2160, maximum 32767 x 32767
eDP1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 310mm x 170mm
   1920x1080     60.01*+  40.00  
   1400x1050     59.98  
   1600x900      60.00  
   1280x1024     60.02  
   1280x960      60.00  
   1368x768      60.00  
   1280x720      60.00  
   1024x768      60.00  
   1024x576      60.00  
   960x540       60.00  
   800x600       60.32    56.25  
   864x486       60.00  
   640x480       59.94  
   720x405       60.00  
   640x360       60.00  
DP1 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis)
DP2-1 connected 3840x2160+1920+0 (normal left inverted right x axis y axis) 530mm x 300mm
   3840x2160     60.00*+  29.98  
   2560x1440     59.95  
   2048x1280     59.99  
   1920x1200     59.88  
   1920x1080     60.00    60.00    50.00    59.94    24.00    23.98  
   1600x1200     60.00  
   1600x900      60.00  
   1280x1024     75.02    60.02  
   1152x864      75.00  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    60.00  
   800x600       75.00    60.32  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    60.00    59.94  
   720x400       70.08  
DP2-2 disconnected (normal left inverted right x axis y axis)
DP2-3 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)

error in dmesg :

/usr/lib/gdm/gdm-x-session[674]: (II) intel(0): Output DP2-1 has no monitor section
 /usr/lib/gdm/gdm-x-session[674]: (II) intel(0): Enabled output DP2-1
/usr/lib/gdm/gdm-x-session[674]: (II) intel(0): Output DP2-2 has no monitor section
/usr/lib/gdm/gdm-x-session[674]: (II) intel(0): Enabled output DP2-2
/usr/lib/gdm/gdm-x-session[674]: (II) intel(0): Output DP2-3 has no monitor section
/usr/lib/gdm/gdm-x-session[674]: (II) intel(0): Enabled output DP2-3
/usr/lib/gdm/gdm-x-session[674]: (II) intel(0): resizing framebuffer to 5760x2160
 /usr/lib/gdm/gdm-x-session[674]: (II) intel(0): switch to mode 3840x2160@60.0 on DP2-1 using pipe 0, position (1920, 0), rotation normal, reflection none
/usr/lib/gdm/gdm-x-session[674]: (II) intel(0): switch to mode 1920x1080@60.0 on eDP1 using pipe 1, position (0, 0), rotation normal, reflection none
gnome-settings-[635]: no xrandr-Dell Inc.-DELL P2415Q-D8VXF68F0J7L device found: Failed to find output xrandr-Dell Inc.-DELL P2415Q-D8VXF68F0J7L

My xorg conf (/etc/X11/xorg.conf.d/20-intel.conf) :

Section "Device"
	Identifier  "Intel Graphics"
        Driver      "intel"
	#Option      "AccelMethod"  "uxa"
	Option      "AccelMethod"  "sna"
EndSection

lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 520 (rev 07)

I tryed lower def but no result either :

xrandr --output DP2-1 --mode 720x480

Laptop : HP EliteBook Folio 1040 G3
Dock: HP Ultra Slim Docking Station
Screen : DELL P2415Q
uname -a : Linux 4.8.4-1-ARCH #1 SMP PREEMPT Sat Oct 22 18:26:57 CEST 2016 x86_64 GNU/Linux

Thanks and regards...