Hello,

I am using Ubuntu 13.10 with KDE Desktop (Installed Ubuntu and added KDE. Is this Kubuntu???). I using the nvidia driver.

Code: Select all

+------------------------------------------------------+                       
| NVIDIA-SMI 5.319.60   Driver Version: 319.60         |                       
|-------------------------------+----------------------+----------------------+
| 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 525M     Off  | 0000:01:00.0     N/A |                  N/A |
| N/A   51C  N/A     N/A /  N/A |      182MB /  2047MB |     N/A      Default |
+-------------------------------+----------------------+----------------------+
                                                                               
+-----------------------------------------------------------------------------+
| Compute processes:                                               GPU Memory |
|  GPU       PID  Process name                                     Usage      |
|=============================================================================|
|    0            Not Supported                                               |
+-----------------------------------------------------------------------------+

It is connected to my TV (better my audio receiver) using HDMI. Sometimes, when I turn off my TV and turn it on again, the resolution is automatically changed from 1080p to 720p. What can cause this? It always rearranges my desktop, causes KDE OpenGL to hang up and is terribly anoing. I have not much Ideas but found some log entries in Xorg.0.log that may help.

Code: Select all

< [  1801.806] (II) NVIDIA(GPU-0): Display (ONKYO Corporation TX-NR609 (DFP-1)) does not support
< [  1801.806] (II) NVIDIA(GPU-0):     NVIDIA 3D Vision stereo.
< [  1801.806] (**) NVIDIA(0): Using HorizSync/VertRefresh ranges from the EDID for display
< [  1801.807] (**) NVIDIA(0):     device ONKYO Corporation TX-NR609 (DFP-1) (Using EDID
< [  1801.807] (**) NVIDIA(0):     frequencies has been enabled on all display devices.)
< [  1801.870] (II) NVIDIA(GPU-0): Display (ONKYO Corporation TX-NR609 (DFP-1)) does not support
< [  1801.870] (II) NVIDIA(GPU-0):     NVIDIA 3D Vision stereo.
< [  1801.870] (**) NVIDIA(0): Using HorizSync/VertRefresh ranges from the EDID for display
< [  1801.870] (**) NVIDIA(0):     device ONKYO Corporation TX-NR609 (DFP-1) (Using EDID
< [  1801.870] (**) NVIDIA(0):     frequencies has been enabled on all display devices.)
< [  1802.190] (II) NVIDIA(0): Setting mode "HDMI-0: 1280x720 @1280x720 +0+0 {ViewPortIn=1280x720, ViewPortOut=1280x720+0+0}"
< [  1802.419] (II) NVIDIA(GPU-0): Display (ONKYO Corporation TX-NR609 (DFP-1)) does not support
< [  1802.419] (II) NVIDIA(GPU-0):     NVIDIA 3D Vision stereo.
< [  1802.419] (**) NVIDIA(0): Using HorizSync/VertRefresh ranges from the EDID for display
< [  1802.419] (**) NVIDIA(0):     device ONKYO Corporation TX-NR609 (DFP-1) (Using EDID
< [  1802.419] (**) NVIDIA(0):     frequencies has been enabled on all display devices.)
< [  1802.512] (II) NVIDIA(GPU-0): Display (ONKYO Corporation TX-NR609 (DFP-1)) does not support
< [  1802.512] (II) NVIDIA(GPU-0):     NVIDIA 3D Vision stereo.
< [  1802.512] (**) NVIDIA(0): Using HorizSync/VertRefresh ranges from the EDID for display
< [  1802.512] (**) NVIDIA(0):     device ONKYO Corporation TX-NR609 (DFP-1) (Using EDID
< [  1802.512] (**) NVIDIA(0):     frequencies has been enabled on all display devices.)
< [  1802.557] (II) NVIDIA(GPU-0): Display (ONKYO Corporation TX-NR609 (DFP-1)) does not support
< [  1802.557] (II) NVIDIA(GPU-0):     NVIDIA 3D Vision stereo.
< [  1802.557] (**) NVIDIA(0): Using HorizSync/VertRefresh ranges from the EDID for display
< [  1802.557] (**) NVIDIA(0):     device ONKYO Corporation TX-NR609 (DFP-1) (Using EDID

Can someone please help me?

Thanks in advance
lonavera

Does the TV advertise that it supports 1080p via the EDID data provided to the Nvidia driver?

I think so. I can select the resolution 1920x1080 in the nvidia driver. But I'm not fully sure what happens when I turn on the devices.

The computer is connected to a audio receiver with HDMI, which itself is connected to the TV. I don't know if the EDID-"flow" is consistent with such a configuration all the time.

Does some part of KDE or X change the display resolution, because it thinks the current resolution is unsupported?

"kcmshell4 kded" / disable "kscreen2" in that dialog.
You might be able to configure the screen in "kcmshell4 kscreen"

What's the output of "xrandr -q"?