[SOLVED] How to enable full HD in ubuntu 13.04 ?

chiller · 01-09-2014, 05:16 AM

I have windows 7 along with Ubuntu 13.04.I have AOC e2250Sw HD monitor.In Windows 7 i can use the monitor at full HD.But it is not possible in Ubuntu 13.04.In System settings/Displays it displays max resolution as 1024*768.Only reason i use windows 7 is because of full HD which is not possible in Ubuntu.I don't have graphic card on my system.My pc config is Intel i5-3330 CPU @ 3.00GHz ,RAM 4.0gb & AOC e2250Sw 21in LED monitor.Please suggest a solution for this issue.I want to use Ubuntu in full HD.

yooy · 01-09-2014, 08:00 AM

have you tried force-adding mode to xrandr?

TDMBG · 01-09-2014, 08:05 AM

To elaborate a little, quoted from ubuntu's own wiki:

Quote:

Due to buggy hardware or drivers, your monitor's correct resolutions may not always be detected. For example, the EDID data block queried from your monitor may be incorrect.

If the mode already exists, but just isn't associated for the particular output, you can add it like this:
$ xrandr --addmode S-video 800x600

If the mode doesn't yet exist, you'll need to create it first by specifying a modeline:
$ xrandr --newmode <Mode``Line>

You may create a modeline using the gtf or cvt utility. For example, if you want to add a mode with resolution 800x600 at 60 Hz, you can enter the following command: (The output is shown following.)
$ cvt 800 600 60
# 800x600 59.86 Hz (CVT 0.48M3) hsync: 37.35 kHz; pclk: 38.25 MHz
Modeline "800x600_60.00" 38.25 800 832 912 1024 600 603 607 624 -hsync +vsync

Then copy the information after the word "Modeline" into the xrandr command:
$ xrandr --newmode "800x600_60.00" 38.25 800 832 912 1024 600 603 607 624 -hsync +vsync

After the mode is entered, it needs to be added to the output using the --addmode command as explained above.

You should try this with 1920x1080, which is your monitor's highest resolution.

TobiSGD · 01-09-2014, 08:06 AM

If you can only use resolutions up to 1024x768 most likely the wrong video driver is in use. Please post the content of /var/log/Xorg.0.log. Please use code-tags for this (see my signature for information).

OFFTOPIC: Ubuntu 13.04 reaches its end-of-life in a few days, it is recommended that you upgrade your system.

chiller · 01-29-2014, 12:12 PM

Here's the output
$ sudo /var/log/Xorg.0.log.
sudo: /var/log/Xorg.0.log.: command not found

xrandr --newmode "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync
X Error of failed request: BadName (named color or font does not exist)
Major opcode of failed request: 140 (RANDR)
Minor opcode of failed request: 16 (RRCreateMode)
Serial number of failed request: 38
Current serial number in output stream: 38

chiller · 01-29-2014, 12:15 PM

~$ xrandr
Screen 0: minimum 320 x 200, current 1024 x 768, maximum 32767 x 32767
VGA1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
1024x768 60.0*
800x600 60.3 56.2
848x480 60.0
640x480 59.9
HDMI1 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
HDMI3 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis)
DP3 disconnected (normal left inverted right x axis y axis)
1920x1080_60.00 (0x109) 173.0MHz
h: width 1920 start 2048 end 2248 total 2576 skew 0 clock 67.2KHz
v: height 1080 start 1083 end 1088 total 1120 clock 60.0Hz

TobiSGD · 01-30-2014, 12:00 AM

Xorg.0.log is a text file, not a command. Please post the content of that text file, using code-tags (see my signature if you need info about code-tags).
Playing with xrandr doesn't make much sense until we know which driver is in use.