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AMD/ATI FirePro 2270 UHD Resolution

asked 2016-11-22 07:33:25 -0500

smoe gravatar image

My workstation is a Dell Precision T3600 with an AMD Firepro 2270. Since a while i also have two NEC MultiSync EA274WMi Monitors, currently connected via DVI. The OS is a Fedora (obviously) 24.

By spec the monitors can handle a resolution of 2560x1440 each, but with DVI connected i can only achieve a max resolution of 1920x1080 each. Once i connected the monitors via VGA and here i can run the monitors in 2560x1440 resolution, but the quality is totally crap. Ok, i thought, buy a Displayport-adapter - separately available for this kind of graphicscard - and give it a try. And with the monitors connected via displayport i cannot even get a picture out of it. I can see the pc booting up, choosing the kernel to boot but as soon as it comes to a resolution other than 640x480 i think, i get an "input out of range" message from the monitors. i am at the end of my knowledge, i tried to add the modeline i got from the edid of the monitors, but this just gives me a distorted picture. has anybody any ideas? who can i address with this problem?

here is some hardware information i could gather:

~$ lspci | grep -i amd
03:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Cedar GL [FirePro 2270]
03:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Cedar HDMI Audio [Radeon HD 5400/6300/7300 Series]

~$ xrandr
Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 8192 x 8192
DisplayPort-0 disconnected (normal left inverted right x axis y axis)
DisplayPort-1 disconnected (normal left inverted right x axis y axis)
DVI-0 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 597mm x 336mm
   1920x1080     60.00*   50.00  
   1280x1440     59.91  
   1680x1050     59.88  
   1400x1050     59.95  
   1280x1024     75.02    60.02  
   1440x900      59.90  
   1280x960      60.00  
   1280x800      59.91  
   1152x864      75.00  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    70.07    60.00  
   832x624       74.55  
   800x600       72.19    75.00    60.32    56.25  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    72.81    66.67    60.00    59.94  
   720x400       70.08  
DVI-1 connected primary 1920x1080+1920+0 (normal left inverted right x axis y axis) 597mm x 336mm
   1920x1080     60.00*   50.00  
   1280x1440     59.91  
   1680x1050     59.88  
   1400x1050     59.95  
   1280x1024     75.02    60.02  
   1440x900      59.90  
   1280x960      60.00  
   1280x800      59.91  
   1152x864      75.00  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    70.07    60.00  
   832x624       74.55  
   800x600       72.19    75.00    60.32    56.25  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    72.81    66.67    60.00    59.94  
   720x400       70.08

~$ monitor-edid 
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/.*? = { <-- HERE / at /usr/bin/monitor-parse-edid line 735.
Name: EA274WMi
EISA ID: NEC695e
EDID version: 1 ...
(more)
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answered 2016-11-22 08:18:27 -0500

jake gravatar image

There are two different types of DVI connectors, single-link and dual-link. The dual-link DVI connector’s pins effectively double the power of transmission and provide higher speed and signal quality. For example, a screen using a single-link DVI connector can display a maximum resolution of 1920×1200 – dual-link’s maximum for that same screen is 2560×1600.

I assume you got 2 single-link DVI cables. Just plugging a DP adapter on one end of a single-link DVI cable doesn't solve this issue, you need 2 dual-link DVI cables.

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hi, thanks for your reply. first, no, i have dual-link DVI cables. second, i did not use a DVI-to-DisplayPort-Adapter, I dont believe they exist. The mentioned Videocard uses a DMS-59 connector. For that exists VGA-, DVI- and DP-Adapters. I really start to think this is a driver issue. so i will address the driver-developers with that. I hope they can help.

smoe gravatar imagesmoe ( 2016-11-29 05:39:27 -0500 )edit

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Last updated: Nov 22 '16