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Old 07-01-2015, 12:24 PM   #1
ss32
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Can't get resolution higher than 1920x1080


Running HDMI via display port on a brand new Acer G257HU. Graphics card is a GT 330. I'm running the most recent drivers from Nvidia, and I've tried manually editing xorg.conf to include higher resolutions than 1080p but can't get it to budge.

RHEL6.5 64 bit
Code:
 lspci | grep "VGA"
01:00.0 VGA compatible controller: NVIDIA Corporation GT215 [GeForce GT 330] (rev a2)
 egrep -i " connected|card detect|primary dev" /var/log/Xorg.0.log
[   484.278] (--) NVIDIA(0):     Acer G257HU (DFP-1) (boot, connected)
 nvidia-smi
Wed Jul  1 12:27:54 2015       
+------------------------------------------------------+                       
| NVIDIA-SMI 340.76     Driver Version: 340.76         |                       
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|===============================+======================+======================|
|   0  GeForce GT 330      Off  | 0000:01:00.0     N/A |                  N/A |
|  5   41C   P12    N/A /  N/A |     56MiB /  1023MiB |     N/A      Default |
+-------------------------------+----------------------+----------------------+
                                                                               
+-----------------------------------------------------------------------------+
| Compute processes:                                               GPU Memory |
|  GPU       PID  Process name                                     Usage      |
|=============================================================================|
|    0            Not Supported                                               |
+-----------------------------------------------------------------------------+
This is happening with two machines, the other is running an Nvidia NVS315 on RHEL6.5 as well.

Last edited by ss32; 07-01-2015 at 12:31 PM.
 
Old 07-01-2015, 12:55 PM   #2
smallpond
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What's the output of xrandr?
 
Old 07-01-2015, 12:58 PM   #3
ss32
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Code:
% xrandr
Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 16384 x 16384
DVI-I-0 disconnected primary (normal left inverted right x axis y axis)
VGA-0 disconnected (normal left inverted right x axis y axis)
DVI-I-1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 885mm x 498mm
   1920x1080      60.0*+
   1680x1050      60.0  
   1600x900       60.0  
   1440x900       59.9  
   1366x768       59.8  
   1280x1024      75.0     60.0  
   1280x800       59.8  
   1280x720       60.0  
   1152x864       75.0  
   1024x768       75.0     70.1     60.0  
   800x600        75.0     72.2     60.3     56.2  
   640x480        75.0     72.8     59.9  
HDMI-0 disconnected (normal left inverted right x axis y axis)
 
Old 07-01-2015, 04:17 PM   #4
smallpond
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What happens when you do:
Code:
xrandr --size 1680x1050
Note: should also be able to do CtrlAlt+ and CtrlAlt-
 
Old 07-02-2015, 09:24 AM   #5
ss32
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Quote:
Originally Posted by smallpond View Post
What happens when you do:
Code:
xrandr --size 1680x1050
Note: should also be able to do CtrlAlt+ and CtrlAlt-
It changes the resolution. CtrlALt+/- does nothing though. I tried forcing it to a higher resolution but no dice.

Last edited by ss32; 07-02-2015 at 09:27 AM.
 
Old 07-02-2015, 11:46 AM   #6
ss32
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Turns out it was the display port. I switched it to a dual-link DVI and the resolution bumped up. For some reason DP-->HDMI was only capable of 1080p.
 
Old 07-02-2015, 12:48 PM   #7
suicidaleggroll
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Was it an active or passive DP -> HDMI adapter? The passive adapters are generally only rated up to 1920x1200.
 
  


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