Laptop screen blank when using second monitor

[Oliver Ruebenacker]

     Hello,

  I just discovered this only happens when I log into KDE. When I log into
Gnome, both monitors are used properly.

     Best,
     Oliver



On Tue, Oct 29, 2013 at 12:15 PM, Oliver Ruebenacker <curoli at gmail.com>wrote:

>
>      Hello,
>
> On Tue, Oct 29, 2013 at 12:05 PM, Dale Dellutri <daledellutri at gmail.com>wrote:
>
>> On Tue, Oct 29, 2013 at 10:56 AM, Oliver Ruebenacker <curoli at gmail.com>wrote:
>>
>>>
>>>
>>>      Hello,
>>>
>>>   Until this morning, my Lenovo Thinkpad T430 running KDE on Fedora 19
>>> was working fine sitting on a base with a second monitor attached. I
>>> removed it from the base and connected another second monitor (a projector)
>>> and things were still fine. When I put it back into the base, the laptop
>>> screen went blank, and it was using only the second screen. When I remove
>>> it from the base, it uses the built-in screen, but as soon as I put it into
>>> the base, it only uses the second screen. Interestingly, when I restart, it
>>> uses both screens properly until after I log in.
>>>
>>>   Any advice? Thanks!
>>>
>>
>> In a terminal window, type:
>>   xrandr
>> to determine whether it thinks that the laptop screen and the external
>> monitor are connected or disconnected.
>>
>
> [oruebenacker at localhost ~]$ xrandr
> Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192
> LVDS1 connected (normal left inverted right x axis y axis)
>    1600x900       60.0 +   40.0
>    1024x768       60.0
>    800x600        60.3     56.2
>    640x480        59.9
> VGA1 connected primary 1920x1080+0+0 (normal left inverted right x axis y
> axis) 604mm x 342mm
>    1920x1080      60.0*+
>    1600x1200      60.0
>    1680x1050      60.0
>    1280x1024      75.0     60.0
>    1440x900       75.0     59.9
>    1280x960       60.0
>    1280x800       59.8
>    1152x864       75.0
>    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
> LVDS-2 disconnected (normal left inverted right x axis y axis)
> VGA-2 disconnected (normal left inverted right x axis y axis)
> DP-1 disconnected (normal left inverted right x axis y axis)
> DP-2 disconnected (normal left inverted right x axis y axis)
> DP-3 disconnected (normal left inverted right x axis y axis)
> [oruebenacker at localhost ~]$
>
>
>> If the laptop screen is connected
>> but blank, then it sounds like a hardware problem.
>>
>
>   I'm not sure how it can be a hardware problem. The laptop screen is only
> blank if the second screen is connected and I am logged in. If I disconnect
> the second screen, it uses the builtin screen. If I restart it uses both
> screens next to each other until I log in.
>
> Also, some laptops have a key that you can press to rotate through whether
>> all the screens are active or not.  Does the Lenovo have one?
>>
>
>   I'm not aware of it and have not needed it so far.
>
>      Best,
>      Oliver
>
> --
> Oliver Ruebenacker
> IT Project Lead at PanGenX (http://www.pangenx.com)
> Be always grateful, but never satisfied.
>



-- 
Oliver Ruebenacker
IT Project Lead at PanGenX (http://www.pangenx.com)
Be always grateful, but never satisfied.
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