[ubuntu-uk] native resolutions

Phill Whiteside PhillW at Ubuntu.com
Sat Apr 20 17:13:02 UTC 2013


Hi,

if you have not got it, try installing arandr[1] and see if that helps you.
It is a GUI for xrandr and may help you out, rather than manually editing
the file.

Regards,

Phill.
1.
http://www.ubuntugeek.com/arandr-a-simple-visual-front-end-for-xrandr.html

On 20 April 2013 18:06, pete smout <psmouty at live.com> wrote:

> On 20/04/13 17:34, pete smout wrote:
>
>>   Hi,
>>
>> I have been trying without success to get my ubuntu precise (upgraded
>> from oneric) to accept the same resolution on my tv as 10.04 (Lucid)
>> did. (I still have lucid on a spare hdd so I can check settings).
>>
>> The Problem:
>> TV (when connected via VGA (Out on laptop)- VGA (PC input)on TV)
>> On Lucid resolution was 1360 x 768 (16:9) 60hz. which worked perfectly
>> well (with virtually zero input from me).
>> On Precise i get 1024 x 768 (6:9) 60hz. Which means that I have an ugly
>> 2inch gap down the left of the screen, and the bottom couple of inches
>> below the edge of the physical screen. (I hope this makes sense)
>>
>> This confusing problem led me on a google-thon and I have got this far.
>>
>> The Output from xandr in terminal with TV connected:
>>
>> pete at petes-lappy:~$ xrandr
>>
>> Screen 0: minimum 320 x 200, current 1024 x 768, maximum 8192 x 8192
>>
>> LVDS1 connected (normal left inverted right x axis y axis)
>>
>>     1280x800       60.0 +
>>
>>     1024x768       60.0
>>
>>     800x600        60.3     56.2
>>
>>     640x480        59.9
>>
>> 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
>>
>> TV1 disconnected (normal left inverted right x axis y axis)
>>
>>
>> As you can see 1360 x 768 (or anything close is *not* an option) so I am
>> left trying to devise a way of getting it!
>>
>> i have run gtf in terminal and get the following:
>>
>> pete at petes-lappy:~$ gtf 1360 768 60
>>
>>    # 1360x768 @ 60.00 Hz (GTF) hsync: 47.70 kHz; pclk: 84.72 MHz
>>
>>    Modeline "1360x768_60.00"  84.72  1360 1424 1568 1776  768 769 772
>> 795  -HSync +Vsync
>>
>>
>> Which gave me the idea of constructing a script to create the modeline
>> (which if necessary I can run every time I plug the TV in)
>>
>> The script I devised:
>>
>> #This line adds modeline from output of gtf command
>>
>> # 1368x768 @ 60.00 Hz (GTF) hsync: 47.70 kHz; pclk: 85.86 MHz
>>
>> xrandr --VGA1 "1368x768_60.00"  85.86  1368 1440 1584 1800  768 769 772
>> 795  -HSync +Vsync
>>
>> #This line adds the mode as it is not default
>>
>> xrandr --addmode VGA1 1368x768_60
>>
>> #This line sets resolution on VGA1
>>
>> xrandr --output VGA1 --mode 1368x768_60
>>
>> Returns the following error:
>>
>> pete at petes-lappy:~$ /home/pete/Desktop/tv.bash
>>
>> usage: xrandr [options]
>>
>>    where options are:
>>
>>    -display <display> or -d <display>
>>
>>    -help
>>
>>    -o <normal,inverted,left,right,0,**1,2,3>
>>
>>              or --orientation <normal,inverted,left,right,0,**1,2,3>
>>
>>    -q        or --query
>>
>>    -s <size>/<width>x<height> or --size <size>/<width>x<height>
>>
>>    -r <rate> or --rate <rate> or --refresh <rate>
>>
>>    -v        or --version
>>
>>    -x        (reflect in x)
>>
>>    -y        (reflect in y)
>>
>>    --screen <screen>
>>
>>    --verbose
>>
>>    --current
>>
>>    --dryrun
>>
>>    --nograb
>>
>>    --prop or --properties
>>
>>    --fb <width>x<height>
>>
>>    --fbmm <width>x<height>
>>
>>    --dpi <dpi>/<output>
>>
>>    --output <output>
>>
>>        --auto
>>
>>        --mode <mode>
>>
>>        --preferred
>>
>>        --pos <x>x<y>
>>
>>        --rate <rate> or --refresh <rate>
>>
>>        --reflect normal,x,y,xy
>>
>>        --rotate normal,inverted,left,right
>>
>>        --left-of <output>
>>
>>        --right-of <output>
>>
>>        --above <output>
>>
>>        --below <output>
>>
>>        --same-as <output>
>>
>>        --set <property> <value>
>>
>>        --scale <x>x<y>
>>
>>        --transform <a>,<b>,<c>,<d>,<e>,<f>,<g>,<**h>,<i>
>>
>>        --off
>>
>>        --crtc <crtc>
>>
>>        --panning
>> <w>x<h>[+<x>+<y>[/<track:w>x<**h>+<x>+<y>[/<border:l>/<t>/<r>**/<b>]]]
>>
>>        --gamma <r>:<g>:<b>
>>
>>        --primary
>>
>>    --noprimary
>>
>>    --newmode <name> <clock MHz>
>>
>>              <hdisp> <hsync-start> <hsync-end> <htotal>
>>
>>              <vdisp> <vsync-start> <vsync-end> <vtotal>
>>
>>              [+HSync] [-HSync] [+VSync] [-VSync]
>>
>>    --rmmode <name>
>>
>>    --addmode <output> <name>
>>
>>    --delmode <output> <name>
>>
>> xrandr: cannot find mode "1360x768_60"
>>
>> xrandr: cannot find mode 1360x768_60
>>
>>
>> If any one can tell me where I am going wrong (or an easier way of going
>> about it) please let me know!!
>>
>>
>> Regards
>>
>> Pete Smout
>>
>>
>>  Hi,
> More info if it helps
>
> Laptop Acer Aspire 5720 3GB RAM
> TV Panasonic Viera TX-L26X10 26in LCD TV
>
>
>
>
> --
> ubuntu-uk at lists.ubuntu.com
> https://lists.ubuntu.com/**mailman/listinfo/ubuntu-uk<https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk>
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>
> --
> <https://wiki.ubuntu.com/UKTeam/>https://wiki.ubuntu.com/phillw
>
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