RADEON HD6850 screen blanks momentarily

HDMI cable I managed to change with another for test. I found it is not due to cable. both cables are OK.

Then just for clearing doubts, I refreshed/cleaned the copper strips of my RAM sticks, 6GB in 4 sticks. Corsair. Also swapped their location. Problem exists. even with just one stick. So it is not due to any RAM malfunction.

Then I found CPU clock ratio in my BIOS was on AUTO, I changed to manual and to max value. thinking that CPU freq shifts might be the cause but it is not.

Then I changed a value in BIOS PCIe spread spectrum, it was on AUTO, I made it disabled. It also has to do with the PCIe clock freq. but still problem exists.

Then I observed same problem in another Operating System on same rig with completely different breed of driver than windows driver. no catalyst control center there. All default values. Problem is still there. So it is not related with Windows/driver/catalyst.

So I think problem with the card itself and most probably in HDMI circuitary. because when blank, it does work with Graphic Card->DVI->Dsub->Monitor. My Monitor SAMSUNG 24' LED has HDMI and DSub ports only. I have no other HDMI out device to confirm monitor. But HDMI cable is OK.

This is a nice Graphics setup and I don't want to discard this gr. card just due to this problem.

Please suggest if I forcefully burn the BIOS with same version of this graphic card, any possiblity?

secondly, how well the two compares, HDMI and DVI. I got best results on my screen with HDMI setup. I may have to buy a DVI->HDMI converter ( does it comes? ) so I can utilize the graphic card out DVI and monitor in HDMI provided no compromise in quality

any ideas?

Ok late but I managed to buy a DVI –to- HDMI Adapter. Amazingly it did not solve the problem.
Here is the adapter
DVI-D Single link <-> HDMI female


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My graphics card has the following output types:


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1 x HDMI (with 3D)
1 x DisplayPort
1 x Single-Link DVI-D
1 x Dual-Link DVI-I


I connected DVI-D port of gr. Card to monitor’s HDMI through adapter this way:
GRAPHIC CARD DVI-D port -> [ Adapter ] -> HDMI port -> ……….HDMI CABLE…………. -> HDMI IN on Monitor
Switched on the system and the monitor. Monitor sensed HDMI input and switched to HDMI in source. The screen was completely blank (starting from first BIOS boot screen) but monitor light shows it is operational at the moment and not in standby or power save mode.

Then I connected DVI-I port of gr. Card to monitor hdmi through adapter
GRAPHIC CARD DVI-I port -> [ Adapter ] -> HDMI port -> ……….HDMI CABLE…………. -> HDMI IN on Monitor
Same thing, monitor shows blank.

At last I connected the old way, my gr. Card to monitor via HDMI ports
GRAPHIC CARD HDMI port -> ……….HDMI CABLE…………. -> HDMI IN on Monitor
Also it is blank screen.

That lets me monitor’s HDMI think may be at fault. But I have no HDMI out device at the moment to test. VGA mode works fine on 1920x1280 RGB.
Also I am thinking may be monitor’s EDID would be faulty for HDMI port. I extracted the live EDID from VGA mode.
GRAPHIC CARD DVI-I port -> [ DVI-I –to-D Sub Adapter ] -> ………. VGA cable …………. -> VGA in on Monitor

EDID report for VGA mode is as follows:
EDID Manager Version: 1.0.0.14
___________________________________________________________________
Block 0 (EDID Base Block), Bytes 0 - 127, 128 BYTES OF EDID CODE:
0 1 2 3 4 5 6 7 8 9
000 | 00 FF FF FF FF FF FF 00 4C 2D
010 | D5 07 59 54 53 5A 11 15 01 03
020 | 0E 35 1E 78 2A BA 41 A1 59 55
030 | 9D 28 0D 50 54 BF EF 80 71 4F
040 | 81 00 81 40 81 80 95 00 A9 40
050 | B3 00 95 0F 02 3A 80 18 71 38
060 | 2D 40 58 2C 45 00 13 2B 21 00
070 | 00 1E 00 00 00 FD 00 38 4B 1E
080 | 51 11 00 0A 20 20 20 20 20 20
090 | 00 00 00 FC 00 53 4D 53 32 34
100 | 41 33 35 30 48 0A 20 20 00 00
110 | 00 FF 00 48 56 4E 42 34 30 30
120 | 31 37 38 0A 20 20 00 FF
___________________________________________________________________

I cannot poll EDID in HDMI port from monitor because it is not in working state. But I tried to interpret old EDID in ‘DIGITAL’ mode in windows registry that may be from when once it was working fine. I cannot interpret it correctly. It shows something like PnP monitor which lead to the fact that it is assigned by windows when no EDID successfully polled from monitor.

Now need you suggestion how to isolate the problem and fix the issue.

Guys, I googled it.

I found numerous hints on firmware upgrade on my monitor.

This official page referring to upgrade firmware :
Firmware Update For SA Series Monitors

It addresses similar issue and recommends firmware upgrade
Symptoms:
Blank Screen
Solid Red Status Light

Affected Models:
LS**A20*
LS**A33*
LS**A30*
LS**A35* <- this is my series LS24A350H
LS**A45*
LS**A46*
LS**A55*


NOW here is the problem:
I have already upgraded firmware for this monitor when it was released.
utility: 'SamsungFirmwareUpdater_1.1.07_120227.exe'

May be the problem now needs a refresh on firmware again but when i try to upgrade this time , samsung utility says firmware upgrade is not required because it is already on that upgraded version.

--> How can I forcefully apply this firmware upgrade ?

please put your suggestion

Hi again,

I confirmed everything by connecting another Display ( in place of this samsung monitor) to my system. cable etc everything is working it means problem is in my monitor.

Now thinking EDID may really need to be re-programmed for this monitor HDMI port. no idea how.

please help