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External Monitor Screen Flicker

post #1 of 5
Thread Starter 
I seem to get a lot of screen flickering when I connect my laptop to my monitor via VGA. However, this only happens when the laptop is connected to power. When I disconnect the power cable and use it on battery, the monitor works fine without any flickering. Any idea what the problem might be?
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Crucial M4 64GB, Samsung F3 1TB Windows 7 x64 Dell Ultrasharp U2412M Corsair AX850 
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Modest Build
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500K P8Z68-V Pro MSI GTX 580 Lightning SLI Corsair Vengeance 8GB 
Hard DriveOSMonitorPower
Crucial M4 64GB, Samsung F3 1TB Windows 7 x64 Dell Ultrasharp U2412M Corsair AX850 
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Corsair 600T SE 
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post #2 of 5
what gpu do you have in that laptop? ati's overdrive software is known to cause flickering on a second monitor, if this applies to you just switch off overdrive (worked for me!)
BlackPig
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Intel i7 3820 Asrock x79 extreme 7 2gb HD5870 eye 6 Crossfire Patriot Viper Xtreme Division 4 Series 1600MHz ... 
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Samsung 256GB 830 series SSD & WD Caviar Black ... LG Water Windows 7 home premium x64 
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3x Dell U2312HM = 5760x1080 eyefinity logitech G19 ZALMAN ZM1000-HP Zalman LQ1000 
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BlackPig
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Hard DriveOptical DriveCoolingOS
Samsung 256GB 830 series SSD & WD Caviar Black ... LG Water Windows 7 home premium x64 
MonitorKeyboardPowerCase
3x Dell U2312HM = 5760x1080 eyefinity logitech G19 ZALMAN ZM1000-HP Zalman LQ1000 
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Razer Mamba 2012 4G Steelseries Qck Heavy Logitech Z5500 5.1 surround 
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post #3 of 5
Thread Starter 
It's a Nvidia 310M

Could it be a grounding issue?
Modest Build
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500K P8Z68-V Pro MSI GTX 580 Lightning SLI Corsair Vengeance 8GB 
Hard DriveOSMonitorPower
Crucial M4 64GB, Samsung F3 1TB Windows 7 x64 Dell Ultrasharp U2412M Corsair AX850 
Case
Corsair 600T SE 
  hide details  
Reply
Modest Build
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500K P8Z68-V Pro MSI GTX 580 Lightning SLI Corsair Vengeance 8GB 
Hard DriveOSMonitorPower
Crucial M4 64GB, Samsung F3 1TB Windows 7 x64 Dell Ultrasharp U2412M Corsair AX850 
Case
Corsair 600T SE 
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post #4 of 5
I couldnt rule that out, but i would lean more towards the gpu doing something funky when you plug into the mains power, have you played with the power options in windows? some laptop GPU's kinda up their clocks when plugged into mains power maybe you can find some options hidden away relating to this?
BlackPig
(15 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 3820 Asrock x79 extreme 7 2gb HD5870 eye 6 Crossfire Patriot Viper Xtreme Division 4 Series 1600MHz ... 
Hard DriveOptical DriveCoolingOS
Samsung 256GB 830 series SSD & WD Caviar Black ... LG Water Windows 7 home premium x64 
MonitorKeyboardPowerCase
3x Dell U2312HM = 5760x1080 eyefinity logitech G19 ZALMAN ZM1000-HP Zalman LQ1000 
MouseMouse PadAudio
Razer Mamba 2012 4G Steelseries Qck Heavy Logitech Z5500 5.1 surround 
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BlackPig
(15 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 3820 Asrock x79 extreme 7 2gb HD5870 eye 6 Crossfire Patriot Viper Xtreme Division 4 Series 1600MHz ... 
Hard DriveOptical DriveCoolingOS
Samsung 256GB 830 series SSD & WD Caviar Black ... LG Water Windows 7 home premium x64 
MonitorKeyboardPowerCase
3x Dell U2312HM = 5760x1080 eyefinity logitech G19 ZALMAN ZM1000-HP Zalman LQ1000 
MouseMouse PadAudio
Razer Mamba 2012 4G Steelseries Qck Heavy Logitech Z5500 5.1 surround 
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post #5 of 5
Is it an Acer laptop? We have one that does the same thing.
Neckpain
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H100 Linux Mint ASUS 21.5" CMSTORM Quick Fire 
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Enermax 1050W Corsair Vengeance Series C70 Logitech Performance MX Xonar DX 
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AMD A10 5800K ASRock FM2A75M-ITX AMD Radeon HD 7660D samsung wonder ram 
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None Stock Linux Mint 14 64bit Windows Server 2012 
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Neckpain
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LAN rig
(8 items)
 
 
CPUMotherboardGraphicsRAM
i7 4930k Sabertooth x79 Nvidia 650ti Corsair Vengeance 
CoolingOSMonitorKeyboard
H100 Linux Mint ASUS 21.5" CMSTORM Quick Fire 
PowerCaseMouseAudio
Enermax 1050W Corsair Vengeance Series C70 Logitech Performance MX Xonar DX 
CPUMotherboardGraphicsRAM
AMD A10 5800K ASRock FM2A75M-ITX AMD Radeon HD 7660D samsung wonder ram 
Optical DriveCoolingOSOS
None Stock Linux Mint 14 64bit Windows Server 2012 
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