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Thread: Screen lines at 75 hz

  1. #11
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    Re: Screen lines at 75 hz

    The measurement units cm are non-SI & only used by clothing industry.

    How do you convert 47.5cm to 47mm..??

    The leading character "$" is meant to indicate the use of terminal shell.
    Don't type it into terminal...

    $xrandr --fbmm 475mmx267mm

    aspect ratio = (475 / 267) = 1.779 ~= 16/9..

    There is/was a problem with AMD Catalyst & the version of Xorg in 12.10..This should have been sorted by now.
    Last edited by BicyclerBoy; January 20th, 2013 at 08:30 PM.

  2. #12
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    Smile Re: Screen lines at 75 hz

    Hi!

    Indeed it was completely careless of me to translate cm into mm like that...

    I tried $xrandr --fbmm 475mmx267mm (without the $ sign) and it didn't do anything except show the help text for the function:

    xrandr --fbmm 475mmx267mm
    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>
    --scale-from <w>x<h>
    --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>
    [flags...]
    Valid flags: +HSync -HSync +VSync -VSync
    +CSync -CSync CSync Interlace DoubleScan
    --rmmode <name>
    --addmode <output> <name>
    --delmode <output> <name>
    --listproviders
    --setprovideroutputsource <prov-xid> <source-xid>
    --setprovideroffloadsink <prov-xid> <sink-xid>
    I tried to reinstall the Catalyst drivers again (my Ubuntu 12.10 is up to date), once via the Restricted Drivers in Software Sources, and another time via the Ubuntu Software Center. It didn't work: I couldn't access the menu bar on the left, and moving a window about was slow, which I suppose means that it was using the motherboard's graphic card chipset instead of my ATi Radeon. In details, there was written "VESA:CYPRESS" instead of "Unknown."

    It looks like most xrandr commands I tried previously just weren't recognized. Am I missing a piece of software?

  3. #13
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    Re: Screen lines at 75 hz

    My mistake:
    $xrandr --fbmm 475x267

    don't add the units after numbers..
    I had it right in previous post..

    I wouldn't bother with Catalyst driver until you can find information stating the *buntu distro driver is compatible with 12.10 Xorg version.

  4. #14
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    Smile Re: Screen lines at 75 hz

    Alright, the command does work in that it doesn't display an error, but there doesn't seem to be anything changing. I tried it while in 1024x768 and in 1280x720, but it did nothing in both cases.

    Maybe there is another command that needs to be input first in order for this one to work?

    Thanks for your help!

  5. #15
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    Re: Screen lines at 75 hz

    Maybe all 3 in sequence:

    $xrandr --output HDMI-0 --mode 1024x768
    $xrandr --output HDMI-0 --scale 1x1
    $xrandr --fbmm 475x267

    then
    $xrandr
    post the output..

    It is possible that EDID values of 16x9 is internally ignored because it is plainly incorrect..

  6. #16
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    Smile Re: Screen lines at 75 hz

    It didn't do anything either. However, 1024x768 did already work just fine (it's just completely stretched because it's 4:3), so I am not sure if you actually wanted me to do $xrandr --output HDMI-0 --mode 1024x768 or rather $xrandr --output HDMI-0 --mode 1280x720 . I tried both, here is the output:

    Screen 0: minimum 320 x 200, current 1280 x 720, maximum 8192 x 8192
    DisplayPort-0 disconnected (normal left inverted right x axis y axis)
    HDMI-0 connected 1280x720+0+0 (normal left inverted right x axis y axis) 16mm x 9mm
    1920x1080i 30.0 +
    1280x720 60.0*
    1024x768 75.1 70.1 60.0
    1024x576 60.0
    832x624 74.6
    800x600 72.2 75.0 60.3 56.2
    848x480 60.0
    640x480 72.8 75.0 66.7 60.0
    DVI-0 disconnected (normal left inverted right x axis y axis)
    And:

    Screen 0: minimum 320 x 200, current 1024 x 768, maximum 8192 x 8192
    DisplayPort-0 disconnected (normal left inverted right x axis y axis)
    HDMI-0 connected 1024x768+0+0 (normal left inverted right x axis y axis) 16mm x 9mm
    1920x1080i 30.0 +
    1280x720 60.0
    1024x768 75.1* 70.1 60.0
    1024x576 60.0
    832x624 74.6
    800x600 72.2 75.0 60.3 56.2
    848x480 60.0
    640x480 72.8 75.0 66.7 60.0
    DVI-0 disconnected (normal left inverted right x axis y axis)
    (I let it at 75.1 but I could have put it in 60.0 to prevent the white lines, which is what I do in 1024x768 so long as I can't put a 16:9 resolution that takes the whole screen.)

  7. #17
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    Re: Screen lines at 75 hz

    I think you better post the /var/log/Xorg.0.log..
    I starting to have doubts about the native screen size..

    Can set rate :
    $xrandr --output HDMI-0 --mode 1024x768 --rate 60.0
    Last edited by BicyclerBoy; January 23rd, 2013 at 10:56 PM.

  8. #18
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    Smile Re: Screen lines at 75 hz

    I already tried the command you gave me; I actually put it as a startup application. No screen lines because it's 60 hz, but still not the resolution I wanted.

    About the Xorg.0.log, sure; should I post the whole file using quote tags? It is pretty big.

  9. #19
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    Re: Screen lines at 75 hz

    Make it an .txt file attachment then..
    (rename Xorg.0.log.txt)

  10. #20
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    Smile Re: Screen lines at 75 hz

    I tried to upload the file here but it said "Your file of 58.9 KB bytes exceeds the forum's limit of 19.5 KB for this filetype."

    So I uploaded it on another site:

    http://depositfiles.com/files/g0e2mubfv

    Hopefully it works.

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