Como você maximiza uma janela usando o KDE?

Question

Essa é a configuração do meu monitor:

Ao clicar em (^) , a janela é maximizada em um único monitor.

7 de outubro de 2015 8:29 UTC: Como as pessoas configuram o X11 para ver todas as exibições como uma única exibição?

7 de outubro de 2015 às 10h04 UTC:

$ lspci && xrandr
00:00.0 Host bridge: Intel Corporation 4th Gen Core Processor DRAM Controller (
rev 06)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor PC
I Express x16 Controller (rev 06)
00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family U
SB xHCI (rev 05)
00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series Chipse
t Family MEI Controller #1 (rev 04)
00:19.0 Ethernet controller: Intel Corporation Ethernet Connection I217-V (rev 
05)
00:1a.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family U
SB EHCI #2 (rev 05)
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Defin
ition Audio Controller (rev 05)
00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI E
xpress Root Port #1 (rev d5)
00:1c.1 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI E
xpress Root Port #2 (rev d5)
00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family U
SB EHCI #1 (rev 05)
00:1f.0 ISA bridge: Intel Corporation C220 Series Chipset Family H81 Express LP
C Controller (rev 05)
00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 
6-port SATA Controller 1 [AHCI mode] (rev 05)
00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Cont
roller (rev 05)
01:00.0 VGA compatible controller: NVIDIA Corporation GK208 [GeForce GT 720] (r
ev a1)
01:00.1 Audio device: NVIDIA Corporation Device 0e0f (rev a1)
03:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8821AE 802.11ac 
PCIe Wireless Network Adapter
Screen 0: minimum 8 x 8, current 2400 x 1920, maximum 16384 x 16384
VGA-0 disconnected primary (normal left inverted right x axis y axis)
DVI-D-0 connected 1200x1920+0+0 left (normal left inverted right x axis y axis) 
518mm x 324mm
   1920x1200     59.95*+  59.88  
   1920x1080     60.00    59.94    50.00    29.97    25.00    23.97    60.05    
60.00    50.04  
   1600x1200     60.00  
   1280x1024     75.02    60.02  
   1280x720      60.00    59.94    50.00
   1152x864      75.00
   1024x768      75.03    60.00
   800x600       75.00    60.32
   720x576       50.00    50.08
   720x480       59.94    60.05
   640x480       75.00    59.94    59.93
HDMI-0 connected 1200x1920+1200+0 right (normal left inverted right x axis y ax
is) 518mm x 324mm
   1920x1200     59.95*+  59.88           
   1920x1080     60.00    59.94    50.00    29.97    25.00    23.97    60.05   
60.00    50.04                             
   1600x1200     60.00                                
   1280x1024     75.02    60.02                        
   1280x720      60.00    59.94    50.00          
   1152x864      75.00         
   1024x768      75.03    60.00       
   800x600       75.00    60.32         
   720x576       50.00    50.08             
   720x480       59.94    60.05         
   640x480       75.00    59.94    59.93    
$ _

Meu 'Kate- > Ajuda- > Sobre o KDE' informa 'Platform Version 4.14.2'.