MiniDP-VGA adapter woes
Last response: in Graphics & Displays
Having real trouble with a new Mini-displayport to VGA adapter (active) [http://www.newegg.com/Product/Product.aspx?Item=N82E168...] that I'm trying to use to connect a third monitor with.
Setup is as follows. I have a Radeon 6970 video card with two mdp's and one DVI port. I have three 24" samsung LED monitors that run at a native 1920x1200. I need this adapter to connect screen three to mdp 2 so I can use the remaining DVI port on screen three for other devices (Xbox, PS3, etc).
I have had this set up and working perfectly where I've run the three screens on the DVI ports with DVI and mdp-DVI-D cables/adapters. It seems the mdp-to-VGA adapter should work here, given the relatively low resolution of 1920x1200, that the adapter claims to support it and I read of others using it for this purpose.
My problem is screen two, when connected in this fashion, reports as a 'Generic non-pnp monitor'. This limits the monitor to 1600x1200.
I have tried to manually install its driver - this didn't help. I've tried unplugging the power cable for 5 minutes (as some recommend), to no avail. I've tried unplugging and replugging the mdp-VGA cable with the monitor off and on, again to no avail.
I'm out of options and about to give up. Any advice would be much appreciated.
Setup is as follows. I have a Radeon 6970 video card with two mdp's and one DVI port. I have three 24" samsung LED monitors that run at a native 1920x1200. I need this adapter to connect screen three to mdp 2 so I can use the remaining DVI port on screen three for other devices (Xbox, PS3, etc).
I have had this set up and working perfectly where I've run the three screens on the DVI ports with DVI and mdp-DVI-D cables/adapters. It seems the mdp-to-VGA adapter should work here, given the relatively low resolution of 1920x1200, that the adapter claims to support it and I read of others using it for this purpose.
My problem is screen two, when connected in this fashion, reports as a 'Generic non-pnp monitor'. This limits the monitor to 1600x1200.
I have tried to manually install its driver - this didn't help. I've tried unplugging the power cable for 5 minutes (as some recommend), to no avail. I've tried unplugging and replugging the mdp-VGA cable with the monitor off and on, again to no avail.
I'm out of options and about to give up. Any advice would be much appreciated.
More about : minidp vga adapter woes
I should maybe add, in case it's relevant that I managed to manually install the monitor driver file however now when I go to Display properties/screen resolution instead of 'generic non-pnp monitor' its called 'Display device on: Mobile PC Display'.
I have no idea why. Still limited to 1600x1200.
Under Devices and Printers I now see (correctly) two SyncMaster SA450)S24A450BW-1 monitors, one with (digital) and one with (analog).
Still pulling my hair out.![:)]( ":)")
I have no idea why. Still limited to 1600x1200.
Under Devices and Printers I now see (correctly) two SyncMaster SA450)S24A450BW-1 monitors, one with (digital) and one with (analog).
Still pulling my hair out.
Well, latest update is I tried moving cables around the DVI slots to no avail.
Then my new MSI Radeon 7970's arrived prematurely today and I just put them in. Different port set-up now and I still can't get it working. This card has 4x mini display-ports and 2 DVI ports, one marked as supporting VGA but I can't get it to run over 1600x1200 on the 3rd screen.
I've given up unless someone has some other idea on how I can hook up the PS3 and PC's DVI cable to the one DVI socket on monitor 3. Maybe run the DVI cable from the PC to screen 3 and the HDMI from the PS3 into a HDMI/DVI switch that would have HDMI and DVI inputs as well as one HDMI output and then I could toggle them that way. I can't find a switch with HDMI AND DVI, however.
Bah - another vote for port unity.
Then my new MSI Radeon 7970's arrived prematurely today and I just put them in. Different port set-up now and I still can't get it working. This card has 4x mini display-ports and 2 DVI ports, one marked as supporting VGA but I can't get it to run over 1600x1200 on the 3rd screen.
I've given up unless someone has some other idea on how I can hook up the PS3 and PC's DVI cable to the one DVI socket on monitor 3. Maybe run the DVI cable from the PC to screen 3 and the HDMI from the PS3 into a HDMI/DVI switch that would have HDMI and DVI inputs as well as one HDMI output and then I could toggle them that way. I can't find a switch with HDMI AND DVI, however.
Bah - another vote for port unity.
Solved this with an HDMI switch. HDMI running from PS3 and Xbox to the switch, then from the PC via an DVI-D-to-HDMI cable. HDMI to DVI-D cable connects from the switch to the PC. Toggle inputs on the main central monitor to switch devices. It's not ideal and occasionally required a reboot on toggling back from PS3 to PC until the latest Radeon drivers. Since then, all working fine.
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