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6950 flickering/blinking in bios and linux

post #1 of 4
Thread Starter 
Hi all,
Ever since I flashed my 990fxa-ud3 with the latest f4 bios, the 6950 flickers/blinks in bios settings screen and during live linux boot off of a USB. I tried re-flashing the backed up f2 bios, to no avail. Also moving the 6950's bios switch to stock bios (non-unlocked) had no effect.

The symptom is a blinking with the following pattern: 1 sec on, 2 secs black, 2 secs on, 5 secs black, etc etc, irregularly with no recognizable pattern (could be a difference in pcie clock and some internal clock of the card?), with too long phases of off/on to be called flickering.

Right now I'm running 2 5830's in CF (for BF3 ) with no such problems.

So if anyone has any ideas, I'd be grateful for any and all tips!
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Zen Master
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post #2 of 4
Thread Starter 
Come on OCN, does nobody have any clue what might be wrong?
Zen Master
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Zen Master
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post #3 of 4
This must be a tough one lol

Seemingly rolling back to previous BIOS has no effect. Unistall all Catalyst drivers and install Catalyst 11.9 + Catalyst 11.8 CAP5. This will work for BF3 Beta in Crossfire.
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post #4 of 4
Thread Starter 
Ok not as tough as it seems... I just got the screen today, its a 5-10 year old compaq with 75 Hz mode. The problem was that it was set to 75Hz and in bios it must be sending the signal at 59-60 Hz, the difference caused that interference pattern thats too long to recognise as what it is.
In any case, switching the cards back and forth and reinstalling drivers worked and reset the card and the screen at some point.


Solved - Mods please close
Edited by Waltibaba - 10/4/11 at 9:31pm
Zen Master
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Thinkpad T420
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T420 Server
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CPUMotherboardGraphicsRAM
R7 1700 @3.8 ASUS Prime B350M-A XFX R9 290 Double Dissipation Corsair Vengeance LPX 2x8GB DDR4 3000MHz CL15 @... 
Hard DriveHard DriveCoolingOS
Samsung 850 EVO 500 Crucial MX300 525GB Antec Kuhler 620 Windows 7 x64 
MonitorMonitorKeyboardPower
Samsung U28E590D AOC I2269Vw VicTsing I-500 Mechanical (Blue) Corsair TX850v2 
CaseMouseAudio
Silverstone Raven RV-03 Custom DIY JVC 2.0 Full Range HiFi through McCrypt DJ-20 m... 
CPUMotherboardGraphicsGraphics
i7 3630QM Thinkpad T420 QM67 pga988 HD4000 nVidia GTS450 eGPU  
RAMRAMHard DriveHard Drive
Mushkin D3S 1066 CL7 8GB Mushkin D3S 1066 CL7 8GB Kingston 128GB mPCIe SSD OCZ Vertex 4 120GB 
Hard DriveOSOSMonitor
Sandisk Ultra II 480GB Arch x86_64 Windows Server 2012R2 14" 1600x900 Matte 
PowerCaseOtherOther
90W Lenovo T420 AzureWave AW-NB037B EXP GDC Beast v8.0 ExpressCard 
CPUMotherboardGraphicsRAM
i7 2670qm Thinkpad T420 QM67 pga988 HD3000 Corsair ValueSelect DDR3-1333 8G 
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Kingston ValueRam DDR3L-1600 8G Lenovo OEM (WD Black) 320GB Seagate 500GB Seagate Desktop ST2000DM001 
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Zen Master
(15 items)
 
Thinkpad T420
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T420 Server
(15 items)
 
CPUMotherboardGraphicsRAM
R7 1700 @3.8 ASUS Prime B350M-A XFX R9 290 Double Dissipation Corsair Vengeance LPX 2x8GB DDR4 3000MHz CL15 @... 
Hard DriveHard DriveCoolingOS
Samsung 850 EVO 500 Crucial MX300 525GB Antec Kuhler 620 Windows 7 x64 
MonitorMonitorKeyboardPower
Samsung U28E590D AOC I2269Vw VicTsing I-500 Mechanical (Blue) Corsair TX850v2 
CaseMouseAudio
Silverstone Raven RV-03 Custom DIY JVC 2.0 Full Range HiFi through McCrypt DJ-20 m... 
CPUMotherboardGraphicsGraphics
i7 3630QM Thinkpad T420 QM67 pga988 HD4000 nVidia GTS450 eGPU  
RAMRAMHard DriveHard Drive
Mushkin D3S 1066 CL7 8GB Mushkin D3S 1066 CL7 8GB Kingston 128GB mPCIe SSD OCZ Vertex 4 120GB 
Hard DriveOSOSMonitor
Sandisk Ultra II 480GB Arch x86_64 Windows Server 2012R2 14" 1600x900 Matte 
PowerCaseOtherOther
90W Lenovo T420 AzureWave AW-NB037B EXP GDC Beast v8.0 ExpressCard 
CPUMotherboardGraphicsRAM
i7 2670qm Thinkpad T420 QM67 pga988 HD3000 Corsair ValueSelect DDR3-1333 8G 
RAMHard DriveHard DriveHard Drive
Kingston ValueRam DDR3L-1600 8G Lenovo OEM (WD Black) 320GB Seagate 500GB Seagate Desktop ST2000DM001 
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Seagate 1TB Proxmox 4.1 14" 1600x900 Matte 90W Lenovo 
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