Public bug reported:
Since I connected external VGA (D-sub) monitor laptop's main display
allways blank and black, whatever screen combinations and options I've
tried with xrandr or LXrandr GUI.
laptop is netbook Asus X101CH with Ubuntu 14.04 32-bit with latest updates
video is Intel CedarView builtin GMA3600
xrandr output below
$ xrandr
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 4096 x 4096
VGA-0 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 531mm
x 298mm
1920x1080 60.0*+
1680x1050 60.0
1600x900 60.0
1280x1024 75.0 60.0
1280x800 59.8
1152x864 75.0
1280x720 60.0
1024x768 75.1 60.0
832x624 74.6
800x600 75.0 60.3
640x480 75.0 60.0
720x400 70.1
LVDS-0 connected (normal left inverted right x axis y axis)
1024x600 60.0 +
960x600 60.0
960x540 60.0
800x600 60.0 60.3 56.2
840x525 60.0 59.9
800x512 60.2
700x525 60.0
640x512 60.0
720x450 59.9
640x480 60.0 59.9
680x384 59.8 60.0
576x432 60.1
512x384 60.0
400x300 60.3 56.3
320x240 60.1
DVI-0 disconnected (normal left inverted right x axis y axis)
DisplayPort-0 disconnected (normal left inverted right x axis y axis)
But I recall with HDMI external monitor everything was OK
** Affects: lxsession (Ubuntu)
Importance: Undecided
Status: New
** Description changed:
Since I connected external VGA (D-sub) monitor laptop's main display
allways blank and black, whatever screen combinations and options I've
tried with xrandr or LXrandr GUI.
+ laptop is netbook Asus X101CH with Ubuntu 14.04 32-bit with latest updates
xrandr output below
- $ xrandr
+ $ xrandr
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 4096 x 4096
VGA-0 connected 1920x1080+0+0 (normal left inverted right x axis y axis)
531mm x 298mm
- 1920x1080 60.0*+
- 1680x1050 60.0
- 1600x900 60.0
- 1280x1024 75.0 60.0
- 1280x800 59.8
- 1152x864 75.0
- 1280x720 60.0
- 1024x768 75.1 60.0
- 832x624 74.6
- 800x600 75.0 60.3
- 640x480 75.0 60.0
- 720x400 70.1
+ 1920x1080 60.0*+
+ 1680x1050 60.0
+ 1600x900 60.0
+ 1280x1024 75.0 60.0
+ 1280x800 59.8
+ 1152x864 75.0
+ 1280x720 60.0
+ 1024x768 75.1 60.0
+ 832x624 74.6
+ 800x600 75.0 60.3
+ 640x480 75.0 60.0
+ 720x400 70.1
LVDS-0 connected (normal left inverted right x axis y axis)
- 1024x600 60.0 +
- 960x600 60.0
- 960x540 60.0
- 800x600 60.0 60.3 56.2
- 840x525 60.0 59.9
- 800x512 60.2
- 700x525 60.0
- 640x512 60.0
- 720x450 59.9
- 640x480 60.0 59.9
- 680x384 59.8 60.0
- 576x432 60.1
- 512x384 60.0
- 400x300 60.3 56.3
- 320x240 60.1
+ 1024x600 60.0 +
+ 960x600 60.0
+ 960x540 60.0
+ 800x600 60.0 60.3 56.2
+ 840x525 60.0 59.9
+ 800x512 60.2
+ 700x525 60.0
+ 640x512 60.0
+ 720x450 59.9
+ 640x480 60.0 59.9
+ 680x384 59.8 60.0
+ 576x432 60.1
+ 512x384 60.0
+ 400x300 60.3 56.3
+ 320x240 60.1
DVI-0 disconnected (normal left inverted right x axis y axis)
DisplayPort-0 disconnected (normal left inverted right x axis y axis)
-
But I recall with HDMI external monitor everything was OK
** Description changed:
Since I connected external VGA (D-sub) monitor laptop's main display
allways blank and black, whatever screen combinations and options I've
tried with xrandr or LXrandr GUI.
- laptop is netbook Asus X101CH with Ubuntu 14.04 32-bit with latest updates
+ laptop is netbook Asus X101CH with Ubuntu 14.04 32-bit with latest updates
+ video is Intel CedarView builtin GMA3600
xrandr output below
$ xrandr
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 4096 x 4096
VGA-0 connected 1920x1080+0+0 (normal left inverted right x axis y axis)
531mm x 298mm
1920x1080 60.0*+
1680x1050 60.0
1600x900 60.0
1280x1024 75.0 60.0
1280x800 59.8
1152x864 75.0
1280x720 60.0
1024x768 75.1 60.0
832x624 74.6
800x600 75.0 60.3
640x480 75.0 60.0
720x400 70.1
LVDS-0 connected (normal left inverted right x axis y axis)
1024x600 60.0 +
960x600 60.0
960x540 60.0
800x600 60.0 60.3 56.2
840x525 60.0 59.9
800x512 60.2
700x525 60.0
640x512 60.0
720x450 59.9
640x480 60.0 59.9
680x384 59.8 60.0
576x432 60.1
512x384 60.0
400x300 60.3 56.3
320x240 60.1
DVI-0 disconnected (normal left inverted right x axis y axis)
DisplayPort-0 disconnected (normal left inverted right x axis y axis)
But I recall with HDMI external monitor everything was OK
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https://bugs.launchpad.net/bugs/1530695
Title:
laptop LVDS screen blanks if external VGA display connected
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