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!
Best, Oliver
On Tue, Oct 29, 2013 at 10:56 AM, Oliver Ruebenacker curoli@gmail.comwrote:
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. If the laptop screen is connected but blank, then it sounds like a hardware problem.
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?
Hello,
On Tue, Oct 29, 2013 at 12:05 PM, Dale Dellutri daledellutri@gmail.comwrote:
On Tue, Oct 29, 2013 at 10:56 AM, Oliver Ruebenacker curoli@gmail.comwrote:
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@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@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
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@gmail.comwrote:
Hello,On Tue, Oct 29, 2013 at 12:05 PM, Dale Dellutri daledellutri@gmail.comwrote:
On Tue, Oct 29, 2013 at 10:56 AM, Oliver Ruebenacker curoli@gmail.comwrote:
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@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@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 <curoli <at> gmail.com> writes:
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!
<SNIP> I had an HP laptop that decided that the brightness of the built-in display should be set to zero when an external monitor was attached. Doesn't sound like the same thing because of the different behavior between KDE and Gnome. You might try hitting the hardware brightness "up" button a few times just to see though.
Cheers, Dave
-
Dale Dellutri -
David G. Miller (aka DaveAtFraud) -
Oliver Ruebenacker