Hello All,
Wasn't sure if I was supposed to post this under Hardware so posting here...
Device: CuBox-i
OS: OpenSuSE 13.1
Uname: Linux CuBox-PC 3.14.14-cubox-i #1 SMP Sat Sep 13 03:48:24 UTC 2014 armv7l armv7l armv7l GNU/Linux
Window Manager: XFCE
Display Manager: lightdm (*XDM?)
I have a few of these devices in our remote branch office locations for network management and I can connect to them via SSH or VNC. I am using x11vnc for remote vnc access so I can control Screen :0 of the device.
By default the device does not have an xorg.conf file.
So without connecting a monitor to the HDMI port (*which is the only display port), it defaults to 1920x1080. After many many attempts to change the resolution via xrandr I have been unable to do so. I attempted creating new modes for just about every common resolution I can think of using "cvt" and "gtf" but each time it fails to change the resolution.
In reading a few other posts I downloaded and installed the Xorg dummy driver and created an xorg.conf file so it could use the driver. But, the largest display size that would work with this driver was 1024x768. All attempts to add new resolutions and then use them failed. I was able to add new resolutions that display in xrandr's output, but when attempting to switch to them it would fail.
Here's an Example using Default Settings (*i.e. no dummy driver and no xorg.conf file):
CuBox-PC:~ # xrandr
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1920 x 1080, current 1920 x 1080, maximum 1920 x 1080
default connected 1920x1080+0+0 0mm x 0mm
1920x1080 60.0*
CuBox-PC:~ #
CuBox-PC:~ # cvt 1600 900 60
# 1600x900 59.95 Hz (CVT 1.44M9) hsync: 55.99 kHz; pclk: 118.25 MHz
Modeline "1600x900_60.00" 118.25 1600 1696 1856 2112 900 903 908 934 -hsync +vsync
CuBox-PC:~ #
CuBox-PC:~ # xrandr --newmode "1600x900" 118.25 1600 1696 1856 2112 900 903 908 934 -hsync +vsync
xrandr: Failed to get size of gamma for output default
CuBox-PC:~ # xrandr --addmode default "1600x900"
xrandr: Failed to get size of gamma for output default
CuBox-PC:~ #
CuBox-PC:~ # xrandr --verbose
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1600 x 900, current 1920 x 1080, maximum 1920 x 1080
default connected 1920x1080+0+0 (0x17a) normal (normal) 0mm x 0mm
Identifier: 0x179
Timestamp: 64566553
Subpixel: unknown
Clones:
CRTC: 0
CRTCs: 0
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
1920x1080 (0x17a) 124.4MHz *current
h: width 1920 start 0 end 0 total 1920 skew 0 clock 64.8KHz
v: height 1080 start 0 end 0 total 1080 clock 60.0Hz
1600x900 (0x1cc) 118.2MHz -HSync +VSync
h: width 1600 start 1696 end 1856 total 2112 skew 0 clock 56.0KHz
v: height 900 start 903 end 908 total 934 clock 59.9Hz
CuBox-PC:~ #
CuBox-PC:~ # xrandr --output default --mode 1600x900
xrandr: Failed to get size of gamma for output default
xrandr: Configure crtc 0 failed
CuBox-PC:~ #
I believe the default driver used is something like "mxc_hdmi". I haven't tried creating an xorg.conf file using that as the driver. But, not sure if it would make a difference if it was in a xorg.conf file if it's not working with xrandr...
If anyone has any thoughts or suggestion, it would be greatly appreciated!
Thanks in Advance,
Matt