[ubuntu-uk] native resolutions

[pete smout]

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