Secondary Display on HD 4200 will not come up
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Last response: in Graphics & Displays
tinyt777
June 28, 2010 9:29:36 PM
I have a fellow employee that bought a new hp 6510f with a HD 4200 onboard card. He also bought 2 19" Coby HDTV's to use as monitors. I have one of them plugged into the VGA port and the other has a dvi to hdmi cable i bought on amazon. However that connection will not recognize the tv at all. The computer will not recognize it. I have tried switching monitors, searched the bios, force detection from catalyst control center, updated drivers for video card, and unplugged the vga cable all to no avail. Any help would be greatly appreciated.
More about : secondary display 4200
h0serdude
June 28, 2010 10:32:00 PM
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tinyt777
June 29, 2010 2:56:38 PM
tinyt777
June 29, 2010 3:12:11 PM
the dvi connection didnt work when i unplugged the vga cable from the computer or after a restart. The original goal was to use a dvi to vga converter, but the dvi port is a dvi-d and the dvi converter i have doesnt fit the port on the computer. and as for the tv not being compatible, that would explain a lot, but i dont understand how that could be.
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tinyt777
June 29, 2010 5:39:50 PM
While I appreciate the offer for the adapter, I dont believe its will be any different than the one I already have. The port on the computer is straight dvi-d which is a pure digital signal from what I understand and it can't be simply converted to the analog vga, so they made the ports different from the dvi-i to prevent confusion. hxxp://www.logicsupply.com/images/dvi_connector_types.gif as reference. The four smaller pin slots next to the horizontal connector aren't there. I also do have access to another monitor with a dvi port on it, it is the company's and I am not currently at a location where i can easily retrieve it.
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There are several DVI-D to VGA connectors available for as little as $5US available that should work. The specs for the HD4200 that I am reading at ATI.com imply such an adapter will work because the logic to do the conversion is built into the GPU chipset. You have nothing to lose in checking it out.
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mindless728
June 29, 2010 6:01:08 PM
COLGeek said:
There are several DVI-D to VGA connectors available for as little as $5US available that should work. The specs for the HD4200 that I am reading at ATI.com imply such an adapter will work because the logic to do the conversion is built into the GPU chipset. You have nothing to lose in checking it out.you can't use a DVI-D to VGS connector, it needs to be DVI-I or DVI-A (s you need the analog part of dvi for the connector)
this should be working fine, you can try to force a tv on the second connection in the ATI catalyst control center
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tinyt777
June 29, 2010 6:18:31 PM
I disagree with mindless728 on this one. The HD4200 chipset clearly contains the logic to do the conversion to analog required. In this situation a simple check with the appropriate adapter will solve the question.
The issue of the DVI/HDMI cable not working implies that either the cable is defective or that the TV/monitor may not be configured to see the HDMI port properly.
Verifying the the PC's DVI-D port works at all would also be a good idea by connecting to another display.
Definitely interested in the outcome here. "Virtual beers" to whoever is right!
The issue of the DVI/HDMI cable not working implies that either the cable is defective or that the TV/monitor may not be configured to see the HDMI port properly.
Verifying the the PC's DVI-D port works at all would also be a good idea by connecting to another display.
Definitely interested in the outcome here. "Virtual beers" to whoever is right!
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tinyt777
June 29, 2010 6:51:39 PM
Here you. This is the product brief for the chipset/GPU.
http://www.amd.com/us/Documents/48244A_Athlon_II_785E_A...
Not a definitive answer, as I said earlier, rather an implication. Also why would HP sell a system that can't talk to all sorts of consumer grade monitors.
Still, this is an entertaining issue to be resolved. I really hope you resolve.
http://www.amd.com/us/Documents/48244A_Athlon_II_785E_A...
Not a definitive answer, as I said earlier, rather an implication. Also why would HP sell a system that can't talk to all sorts of consumer grade monitors.
Still, this is an entertaining issue to be resolved. I really hope you resolve.
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mindless728
June 29, 2010 7:07:22 PM
COLGeek said:
I disagree with mindless728 on this one. The HD4200 chipset clearly contains the logic to do the conversion to analog required. In this situation a simple check with the appropriate adapter will solve the question.yes it has the logic to do it, but the physical port (DVI-D) doesn't have the pins required for a DVI to VGA connector
DVI on wikipedia, look at the picture of pins for DVI-D and see what is missing (hint, C1, C2, C3, C4 for the Analog Red, Green, Blue, Horiz Sync respectively)
COLGeek said:
Verifying the the PC's DVI-D port works at all would also be a good idea by connecting to another display.definitely a good idea to see if the port even works
COLGeek said:
Definitely interested in the outcome here. "Virtual beers" to whoever is right!mmmm beer......
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mindless728 may indeed be right. I concur that the connector on the 6510F may not do the trick without an expensive digital to analog converter. It would be cheaper to just go with a standard monitor.
Still, it would not explain why the DVI-D to HDMI cable didn't work.
I definitely see the connection to how consumer grade monitors with DVI-I cables work with the DVI-D connector on the HP in question as a result of the wikipedia article.
Learning is cool.....
Still, it would not explain why the DVI-D to HDMI cable didn't work.
I definitely see the connection to how consumer grade monitors with DVI-I cables work with the DVI-D connector on the HP in question as a result of the wikipedia article.
Learning is cool.....
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mindless728
June 29, 2010 7:28:25 PM
yeah, id doesn't explain the dvi to hdmi not working (as thats what i am doing for my HTPC)
if you have a monitor with dvi input try that with a dvi cable and see if it works with the dvi port, if yes, replace the dvi to hdmi cable, if no, might have to RMA the motherboard
@COLGeek, discrete cards come with DVI-I ports and usually the cables given are DVI-D (as there is no need for a DVI-I cable) and the ports on the monitor are also usually DVI-D. And on laptops you have to be careful with HDMI or DVI ports as they might not be wired for a dual link connection (ie no 2560x1600 external display)
if you have a monitor with dvi input try that with a dvi cable and see if it works with the dvi port, if yes, replace the dvi to hdmi cable, if no, might have to RMA the motherboard
@COLGeek, discrete cards come with DVI-I ports and usually the cables given are DVI-D (as there is no need for a DVI-I cable) and the ports on the monitor are also usually DVI-D. And on laptops you have to be careful with HDMI or DVI ports as they might not be wired for a dual link connection (ie no 2560x1600 external display)
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There are many products on the market that are listed as "DVI-D to VGA adapters". Scanning multiple reviews imply that these adapters will work with modern LCD monitors (the Coby TVs in question?), but not the old CRTs.
I have a system at home that I am 95% positive has DVI-D connectors (my video rendering machine has a FireGL GPU) that I plan to experiment with.
Will report the results back later tonight.
I have a system at home that I am 95% positive has DVI-D connectors (my video rendering machine has a FireGL GPU) that I plan to experiment with.
Will report the results back later tonight.
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tinyt777
June 29, 2010 7:35:33 PM
Turns out that from my pile of 6 DVI adapters (3-VGA and 3-HDMI), I don't have a single one that is DVI-D to VGA. My 3 DVI to HDMI adapters will plug into my FireGL and drive a monitor just fine though. May pop into a local computer store tomorrow to grab a DVI-D to VGA to continue the learning experience. The "fun" never stops!
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mindless728
June 30, 2010 12:37:01 AM
tinyt777
June 30, 2010 3:23:52 PM
I certainly don't mean to insult in any way, but you have verified both TVs work, yes?
Do you have a DVI to HDMI adapter and HDMI cable you can connect to the second TV?
If you hook up the second TV as the primary with the VGA cable, I assume it works, right?
The easiest problem to solve is the cable and whether it works or not. The next is to verify the TV works. The third would be to ditch the on-board GPU and go with a discrete GPU that does away with the need to connect to the DVI-D connector.
Do you have a DVI to HDMI adapter and HDMI cable you can connect to the second TV?
If you hook up the second TV as the primary with the VGA cable, I assume it works, right?
The easiest problem to solve is the cable and whether it works or not. The next is to verify the TV works. The third would be to ditch the on-board GPU and go with a discrete GPU that does away with the need to connect to the DVI-D connector.
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tinyt777
June 30, 2010 3:40:38 PM
Both tv's do work. i have switched the vga connection between the tv's and they both work the same way. I do not however have a dvi to hdmi adapter or another hdmi cable. They dvi to hdmi cable was all i ordered because when this person bought his setup, i expected him to buy monitors for his computer like any other sane being. However, this setup being relatively new and assuming he still has the box, I may end up recommending that he returns one of the tv's and buys a decent monitor with a dvi input.
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Best solution
tinyt777
June 30, 2010 5:58:03 PM
tinyt777
June 30, 2010 5:59:18 PM
tinyt777
July 2, 2010 7:51:07 PM
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