How to set the monitor to its native resolution when xrandr approach isn't working?
- by Krishna Kant Sharma
I am trying to setup my Samsung syncmaster B2030 monitor in ubuntu 12.04. It's native resolution is 1600x900 which I am not getting in ubuntu and which I am trying to get.
I tried using xrandr approach provided in these urls:
1) http://www.ubuntugeek.com/how-change-display-resolution-settings-using-xrandr.html
2) How to set the monitor to its native resolution which is not listed in the resolutions list?
S1)
I used
cvt 1600 900 60
to get the modeline. Output was:
# 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
S2) I then used
xrandr
and output was:
Screen 0: minimum 8 x 8, current 1152 x 864, maximum 8192 x 8192
DVI-I-0 disconnected (normal left inverted right x axis y axis)
VGA-0 connected 1152x864+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
1024x768 60.0 +
1360x768 60.0 59.8
1152x864 60.0*
800x600 72.2 60.3 56.2
680x384 119.9 119.6
640x480 59.9
512x384 120.0
400x300 144.4
320x240 120.1
DVI-I-1 disconnected (normal left inverted right x axis y axis)
HDMI-0 disconnected (normal left inverted right x axis y axis)
which gave me "VGA-0".
S3) Then I used
xrandr --newmode "1600x900_60.00" 118.25 1600 1696 1856 2112 900 903 908 934 -hsync +vsync
But instead of adding the modeline it just threw an error:
X Error of failed request: BadName (named color or font does not exist)
Major opcode of failed request: 153 (RANDR)
Minor opcode of failed request: 16 (RRCreateMode)
Serial number of failed request: 29
Current serial number in output stream: 29
My system details:
1) ubuntu 12.04 LTS
2) Graphic card: GeForce 9400 GT/PCIe/SSE2 (driver is successfully installed. I am checking it in System Settings Details. And it's showing that driver is installed and its "GeForce 9400 GT/PCIe/SSE2")
3) Monitor: Samsung syncmaster B2030
4) Resolutions I am getting:
800x600
1024x768
1152x864 (I am currently using this one)
1360x768 (this one isn't working properly)
Does anyone know what I can do?
Thanks in advance.
UPDATE (1):
Today I tried it again. And adding a modeline (using --newmode) worked. But when I used --addmode by:
xrandr --addmode VGA-0 1600x900_60.00
It gave this error:
X Error of failed request: BadMatch (invalid parameter attributes)
Major opcode of failed request: 153 (RANDR)
Minor opcode of failed request: 18 (RRAddOutputMode)
Serial number of failed request: 29
Current serial number in output stream: 30
