Dual display problem

Tahvo

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I've connected to my Ati Radeon HD 9650 graphics card two displays and this is the problem:

Display 1 (VGA) is connected to a Dual-link DVI-I port (port 5) with an VGA adapter. Everything works perfectly well.

Display 2 (TFT) is connected to a Single-link DVI-D port (port 1) directly with a DVI cable. This connection causes the problem:


  • When turning the power on both displays show the motherboard's logo and then the 'Starting Windows' animation. After that display 2 goes blank.
  • When opening BIOS (before Windows starts) both displays are showing the BIOS and not going blank (until when switched back to Windows).
How is this possible? First both displays are functioning normally and then not.

My Windows 7 and graphic card's Control Center both do not detect the second monitor --> there is no option in Display Menu for "Enable Extended Desktop" or something similar which would be the normal procedure (worked with my old Radeon 9800 & Win XP combination). The second display can not be detected/enabled automatically nor by manually forcing.


NB: and before you ask: no, there is no display port in motherboard. All display ports (2xDVI, 2xminiDisplay, 1xHDMI) are on graphics card.
 
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My Computer

Computer type
PC/Desktop
OS
Windows 7 Home Edition
Graphics Card(s)
Ati Radeon HD 9650
Hi Tahvo and welcome to Seven forums.
I have had a similar issue and I reversed the monitors. So take the output to the CRT VGA and swap it for the LCD and vice versa. One of the DVI connectors has sensing for what is connected and the other does not. Also verify you have the latest drivers and power off the machine when you swap over the connections so the computer is aware what happened. You should then see the options in Catalyst Control Center and in Windows Desktop Settings.
 
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My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Bluethunder II
OS
Windows 7 x64 Ultimate and numerous virtual machines
CPU
AMD FX-8350 Vishera 32nm Technology @ 4.2 GHz default
Motherboard
ASUSTeK COMPUTER INC. SABERTOOTH 990FX R2.0 (Socket 942)
Memory
G Skill 32.0GB Dual-Channel DDR3 @ 1204MHz (11-13-13-31)
Graphics Card(s)
EVGA GeForce GTX 960 4GB Super SC ACX 2.0+ with Back Plate
Sound Card
Creative X-Fi Titanium HD Audiophile PCIe
Monitor(s) Displays
LG L227WTG x 3
Screen Resolution
1680 x 1050 16:10
Hard Drives
238GB Samsung850 PRO SATA Disk Device (SSD)
1863GB Seagate ST2000DM 001-1CH164 (SATA)
1397GB Seagate ST1500DL 003-9VT16L(SATA)
466GB Western Digital WDC WD50 03AZEX-00K1GA0 (SATA) x 2
932GB Seagate ST310005 28AS SATA Disk Device (SATA)
PSU
Enermax Revolution87+ 1000 Watts Gold Certified Power Supply
Case
Rocketfish Full Tower
Cooling
Cooler Master Hyper 212 EVO Push Pull 120mm Fans
Keyboard
Logitech K740
Mouse
Logitech G100S Laser LED + Logitech Gamepad F310
Internet Speed
500 mbs down and 30mbs up
Antivirus
Malwarebytes Pro & Avast and MSE on certain Virtual Machines
Browser
Firefox (Main) Chrome, Internet Explorer (Back Up)
Other Info
Logitech X 230 2.1 Stereo System and 5.1 Yamaha RX V2090
B&W DM6 Monitor Speakers + Center and Surround Speakers
Using Mouse Without Borders (Google it)
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