PC Graphics

[sabdany]

hello, 

I have a "amd radeon R7 200 series" graphics card with 3 exits:  DVI, VGA, HDMI.   have used for several years only the DVI and VGA exits with 2 extended screens and that was fine.   

today I have tried adding a third screen which is a regular TV with the HDMI port and I cannot extend to all 3.   windows detects this tv as a general monitor

Window display settings shows all 3 of them and this screen was assigned to no.1.  with "Disconnect this display" when I try to assign it to duplicate/extend etc.. and apply button I get the message: "Unable to save display settings"

can someone help?   thx - dani

remarks:

1.   the Radeon software shows only display 1,  display2.   On the window display settings  it shows all 3. 

2.  sometimes when I played with the resolutions/disabled 2 or 3 / restarted the computer - then I could see the desktop on screen 1!  which proves that cable is fine.  however this was on the expense of 2 or 3.    can it be that the card cannot support extending 3 screens at once?  this doesn't make sense as the hardware supports that it seems to me only a software issue...  my driver seems to be update. 

[goodplay]

Having 3 ports doesn't mean your particular model can use all.

Use GPU-Z 'Lookup' button to find the exact make/model of card, then go to the makers website and check specs for monitors/resolutions support.

[sabdany]

thanks goodplay!

so I went ahead and did what you suggested and discovered the following card details:

Device ID - 6613
Vendor ID - 1002
which gives the model:
Oland PRO [Radeon R7 240/340]

and at AMD website this link is supposed to show the spec(?)
https://www.amd.com/en/support/graphics/amd-radeon-r7-series/amd-radeon-r7-200-series/amd-radeon-r7-...

do you where I can figure out the triple extended issue? at least to know if this is supported as you suggested

dani

[goodplay]

Did the gpuz 'Lookup' button not show card maker (asus, msi, xfx etc....).

Go to their website and look at specs for the card ( 2 makers i looked at had 'support 2 monitors' only).

[sabdany]

already mentioned that the maker is AMD and I have pasted the link from their website spec, however could not find there this information.  can you kindly look at the link?  perhaps you can tell   

btw - I cannot find a "GPU-Z 'Lookup' button" where is it?  but I did find the following information in the AMD-Radeon software as I mentioned. 

GPU - AMD Radeon R7 200 Series - Primary/Discrete
VRAM - 2048 MB - DDR3 800 MHz
Graphics Card Manufacturer - Powered by AMD
Graphics Chipset - AMD Radeon R7 200 Series
SubSystem ID - E263
SubSystem Vendor ID - 174B
Revision ID - 00
Bus Type - PCI Express 3.0
Current Bus Settings - PCI Express 3.0 x8
BIOS Version - 015.048.000.050
BIOS Part Number - 113-C5521500-S02
BIOS Date - 2015/02/23 22:16
Usable Memory Size - 2048 MB
Memory Type - DDR3
Memory Clock - 800 MHz
Core Clock - 780 MHz
Total Memory Bandwidth - 25 GByte/s
Memory Bit Rate - 1.60 Gbps
2D Driver File Path - /REGISTRY/MACHINE/SYSTEM/CurrentControlSet/Control/Class/{4d36e968-e325-11ce-bfc1-08002be10318}/0002
OpenGL® API Version - 4.6
OpenCL™ API Version - 1.2

[sabdany]

maker is AMD and i mentioned a link at their website which is supposed to have a spec but could not figure it out...

I am not sure what is the "gpuz 'Lookup' button" where can I find it?  anyway as mentioned I have found all card details from the Radeon software

[goodplay]

Most graphics chips are sold to subvendors who produce a full graphics card under their brand name.

[elstaci]

See if this 2014 Tom's Hardware thread helps any: https://forums.tomshardware.com/threads/r7-240-3-monitors.1803464/