Strange issue with monitor and x1800xl

samorost · Jan 9, 2007

Hello all,

I'm having this strange issue which is driving me crazy and I'm unable to resolve it.

I purchased last year 2 standard VGA LCD monitors, 17", which I intend to use for an audio studio. They both have VGA connectors only. They're the OEM kind, re-branded by "Altech" - they don't have a website and the guy who sold them to me has no idea about this problem.

What happens is, they used to work perfectly on my old ATI 9600pro. I would connect one to the VGA port and the second one to the DVI port using a DVI-VGA adapter.

However, on my new x1800xl, they lose signal as soon as they reach Windows. This happens on both DVI ports. I get perfect signal for about a second and then they lose signal entirely. Furthermore, I am able to reach Windows and operate with no problem by running in VGA mode (no video drivers). I've tried a couple versions of Catalyst drivers - running 6.11 right now.

Does anyone have a clue of what's happening? Why would my old 9600 pro work perfectly and the x1800xl lose video?

I would greatly appreciate any feedback about this.

Zubasa · Jan 9, 2007

samorost said:
Hello all,

I'm having this strange issue which is driving me crazy and I'm unable to resolve it.

I purchased last year 2 standard VGA LCD monitors, 17", which I intend to use for an audio studio. They both have VGA connectors only. They're the OEM kind, re-branded by "Altech" - they don't have a website and the guy who sold them to me has no idea about this problem.

What happens is, they used to work perfectly on my old ATI 9600pro. I would connect one to the VGA port and the second one to the DVI port using a DVI-VGA adapter.

However, on my new x1800xl, they lose signal as soon as they reach Windows. This happens on both DVI ports. I get perfect signal for about a second and then they lose signal entirely. Furthermore, I am able to reach Windows and operate with no problem by running in VGA mode (no video drivers). I've tried a couple versions of Catalyst drivers - running 6.11 right now.

Does anyone have a clue of what's happening? Why would my old 9600 pro work perfectly and the x1800xl lose video?

I would greatly appreciate any feedback about this.

The current driver is 6.12, try that out and may be by chance it will work.

DRDNA · Jan 9, 2007

when you boot up go to safe mode then right click on desktop click properties and then go to Settings tab and turn down the resolution, try 1024x768 . then click save and reboot normally..Get to safe mode by pressing F8 key over and over intill you get black screen and white letters and then choose safe mode .

Grings · Jan 9, 2007

ati's drivers are probably recognising your monitors capabilities wrong, it thinks my monitors max is higher than it actually is they always, set to 1280 +1024@85hz on my computer when installed.

try what drdna says above, and also check the refresh rate isnt too high

samorost · Jan 9, 2007

Thanks, I'll give DRDNA's approach a chance - regarding refresh rates, I've tried 85, 75, 72 and 60Hz. This made no difference whatsoever.

Grings · Jan 9, 2007

true, but just cause a monitor supports 85hz at 1024 768 dosent mean it will at a higher resolution, i had one that could only do 60hz above 1024 768

Namslas90 · Jan 9, 2007

Had the same problem with my Xerox monitor and ATI Radeon X1900XTX. Turns out I just needed the correct MONITOR driver(not supported by ATI). Took about three weeks to find it and afterwards all was OK. Search the Manufacture name and it's probably made by someone else and then search that site for monitor drivers. My Xerox driver was located under the name of the company that made the monitor circuit board not the screen or Xerox.

ATIonion · Jan 9, 2007

this may sound simple...but did you turn the monitor on in the ATI CCC?

if not....then when you are loading windows you will see both monitors are on with the same screen....but once windows is finally loaded the second monitor will shut off....

Kammster · Jan 10, 2007

don't have a x1800 but
i had similar problem in the old days with a fx5200 switching fromt tv out to vga.
if both monitors boot then it a pure driver problem in windows.

1. had to disble on-board video
2. uninstall the driver everytime i used the 5200 for tv out.

if you uninstalling the driver and loading windows without safe mode then u just have find a "perfect" driver ...sometimes older(around when the model came out.)

f you uninstalling the driver and windows doesn't load then you have to clean something.

System Name	I call it "Bitch5.2", but its real name is "Lokotomy420"
Processor	AMD Athlon64 3800+, 939 Venice
Motherboard	ASUS A5N8X
Cooling	Stock AMD cooling HSF
Memory	2x 1024MB Corsair XMS DDR400
Video Card(s)	ATI Radeon X1800XL, 256MB with Zalmann CU-77v HSF
Storage	4x SATA @ 7200RPM, Western Digital320, Maxtor300, Samsung250, Seagate200
Display(s)	Acer 22" LCD, AL2216W
Case	Old Chenbro case, ugly and heavy
Audio Device(s)	M-Audio Delta1010LT 24/96
Power Supply	Generic, don't remember the wattage but it runs fine
Software	Audio software, couple of games, Windows XP SP2...

Processor	Core i7-12700k
Motherboard	Z690 Aero G D4
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Video Card(s)	RX 7900 XTX Phantom Gaming
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Display(s)	InnoCN 27M2V
Case	Thermaltake Level 20 XT
Audio Device(s)	Soundblaster AE-5 Plus
Power Supply	FSP Aurum PT 1200W
Software	Windows 11 Pro 64-bit

Processor	INTEL CORE I9-9900K @ 5Ghz all core 4.7Ghz Cache @1.305 volts
Motherboard	ASUS PRIME Z390-P ATX
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Power Supply	1600 Watt
Software	Windows 10

Processor	R7 5800x3D
Motherboard	MSI x570 Tomahawk
Cooling	XSPC Raystorm Edge,EK QS P420M,EK D5pwm Revo Res
Memory	32gb Corsair Vengeance RT 3600 cl16
Video Card(s)	Zotac 3070ti Amp Extreme
Storage	Samsung 980pro 1tb x2
Display(s)	MSI MPG321QRF QD
Case	Corsair 7000D
Power Supply	EVGA 1000 P2
Mouse	G900
Keyboard	Corsair k60 RGB PRO
Software	Win 11

System Name	I call it "Bitch5.2", but its real name is "Lokotomy420"
Processor	AMD Athlon64 3800+, 939 Venice
Motherboard	ASUS A5N8X
Cooling	Stock AMD cooling HSF
Memory	2x 1024MB Corsair XMS DDR400
Video Card(s)	ATI Radeon X1800XL, 256MB with Zalmann CU-77v HSF
Storage	4x SATA @ 7200RPM, Western Digital320, Maxtor300, Samsung250, Seagate200
Display(s)	Acer 22" LCD, AL2216W
Case	Old Chenbro case, ugly and heavy
Audio Device(s)	M-Audio Delta1010LT 24/96
Power Supply	Generic, don't remember the wattage but it runs fine
Software	Audio software, couple of games, Windows XP SP2...

Strange issue with monitor and x1800xl

samorost

New Member

Zubasa

DRDNA

Grings

samorost

New Member

Grings

Namslas90

New Member

ATIonion

New Member

Kammster

New Member

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