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AMD r9 290 - Can't detect 3rd display

dpodblood

dpodblood

Diamond Member
I just got my R9 290 in the mail today and I was pretty excited about finally being able to use 3 monitors on my home PC. According to the spec's sheet the video card can support up to 4 monitors, which would make sense since you can do eyefinity off of a single card. My main screen is a 27" ASUS connected via displayport which is working fine. Both of my secondary monitors are 20" screens connected via DVI. One of the screens is working fine, the other one is unable to be detected at all. I know the screen/cable/etc is working fine because I can actually see the window logo displayed on it when I boot up the PC, but inside Windows 7 it cannot be detected. The card is a gigabyte r9 290 windforce shown here: http://www.ncix.com/detail/gigabyte-radeon-r9-290-windforce-db-99167-1261.htm
 
Not sure if it still holds true today....In the past a active display adapter was required to activate the 3rd monitor....Excluding eyefinity edition cards.
 
Kenmitch said:
Not sure if it still holds true today....In the past a active display adapter was required to activate the 3rd monitor....Excluding eyefinity edition cards.
Click to expand...

That's only in the case that my monitor doesn't have a displayport input and I'm converting to DVI. I'm using a displayport cable direct from the video card to the monitor.

I've done some more research and discovered that this monitor isn't working period in windows. Even if it's the only display connected, it will display the POST screen and the Windows boot screen, but as soon as it hits the OS it just blacks out and the monitor goes into power saving mode. It must be a driver issue of some kind, but I can't figure out how to resolve it.
 
Resolution out of range possibly. All monitors the same resolution? Not sure if displayport - displayport eliminates the need for a active adapter to enable the 3rd one....Never tried it.
 
Kenmitch said:
Resolution out of range possibly. All monitors the same resolution? Not sure if displayport - displayport eliminates the need for a active adapter to enable the 3rd one....Never tried it.
Click to expand...

So this is just ridiculous. I uninstalled the video drivers and connected the 1680×1050 monitor I'm having trouble with as the sole display. Without the AMD driver installed it works just fine. As soon as I install the driver and reboot it breaks. That is as soon as it hits Windows the screen, even when it's the only display connected to the system it just goes to a blank screen. It's obviously happening because the resolution is out of bounds for that monitor, but why the hell is it trying to go to 1080p when the monitor doesn't support it??

I decided to go with an AMD card this time around despite strongly favoring Nvidia's drivers and this is exactly why....
 
dpodblood said:
I've done some more research and discovered that this monitor isn't working period in windows. Even if it's the only display connected, it will display the POST screen and the Windows boot screen, but as soon as it hits the OS it just blacks out and the monitor goes into power saving mode. It must be a driver issue of some kind, but I can't figure out how to resolve it.
Click to expand...

What is the exact model of the monitor that does this ?
 
Elixer said:
What is the exact model of the monitor that does this ?
Click to expand...

The monitor is a Viewsonic VX2035, and runs at 1680×1050. I discovered last night that if I connect the monitor using an HDMI > DVI cable (out from the video cards HDMI port) the monitor will work, but no matter what I try it will not work when connected using a straight DVI cable.
 
hmmmm..........do you have another hooked up by dvi already? is its single link or dual? I know you have one monitor connected DP;

That is a bit of an odd one; I'd contact AMD with a bug report;

but it also could be - one dvi is analog and one is digital; from what I remember you can't

Is one or both your monitors dvi-d? because that could explain why you can get it to run hmdi-dvi; but not both dvis.

I know on amd you can run dvi; dvi; dp, dvi, hdmi, dp.......dp, dp, dp, if you want to run dvi; dvi; hdmi; one of those needs active display port adaptor.

have you tried switching the monitors on dvi?
 
MeldarthX said:
hmmmm..........do you have another hooked up by dvi already? is its single link or dual? I know you have one monitor connected DP;

That is a bit of an odd one; I'd contact AMD with a bug report;

but it also could be - one dvi is analog and one is digital; from what I remember you can't

Is one or both your monitors dvi-d? because that could explain why you can get it to run hmdi-dvi; but not both dvis.

I know on amd you can run dvi; dvi; dp, dvi, hdmi, dp.......dp, dp, dp, if you want to run dvi; dvi; hdmi; one of those needs active display port adaptor.

have you tried switching the monitors on dvi?
Click to expand...

One monitor is connected via display port. The other 2 I am attempting to connect via single link DVI-D cables (those are the cables that shipped with the monitors). Maybe connecting with a dual link cable would resolve the issue, but I really don't want to ship a cable from monoprice just to test that theory.
 
dpodblood said:
One monitor is connected via display port. The other 2 I am attempting to connect via single link DVI-D cables (those are the cables that shipped with the monitors). Maybe connecting with a dual link cable would resolve the issue, but I really don't want to ship a cable from monoprice just to test that theory.
Click to expand...

I know it is possible with the 290, since a friend has 3 monitors, but he is using dual link DVI cables + DP, and those came with the monitor.
He is using the latest "omega" drivers as well.
 
i am using two single link DVI and one HDMI on a 290 with eyefinity without issue. look up the environment variable you need to show disconnected devices in device manager and remove all the displays and let windows reinstall the display drivers.

This fixed an issue i had with mini DP to vga adapters on my old 6970. windows can get in a wired state where you cant update the driver because you cant see the device and you cant see the device because the driver was screwed.

if the screen works during post/ boot and then stops it sounds like display driver issue ( from my experience).


edit: you can also play with forcing the display in question to have a generic or wsxga generic driver to see if that makes it happy.
 
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