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Thread: Resolution 1680 x 1050 for external monitor does not work

  1. #21
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    Default Re: Resolution 1680 x 1050 for external monitor does not work

    Can you post the output of cmd
    lspci
    you most probably need to be root

  2. #22
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    Default Re: Resolution 1680 x 1050 for external monitor does not work

    Quote Originally Posted by keellambert View Post
    1. Which colour mode are you using; 256, high colour?
    I really don't know (don't set it anywhere as I do not have an xorg.conf). It should be high colour I guess (256 colours might not look that good: Screenshot).

    Quote Originally Posted by keellambert View Post
    2. Can you get the LCD & CRT Cloned mode or LCD and CRT Extended mode working, toggling the Fn-F8 keys.
    -- (external monitor must be connected prior to booting)
    No, both modes did not work properly (it keeps on flickering as described).

    Quote Originally Posted by keellambert View Post
    3. Have you tried selecting the above modes while at the terminal prompt prior to starting the gui?
    -- (booting into a terminal, selecting one of the modes from 2.) then giving the cmd startx)
    I booted into runlevel 3 and I tried logging off from kde and switched to text mode...in both cases I could neither start "xrandr -q" nor "startx". In both cases there was an error message: "Can't open display"...i searched on the internet but can't figure out an easy solution. Is there an easy way?

    Quote Originally Posted by keellambert View Post
    Can you post the output of cmd
    lspci
    SUSE Paste

  3. #23
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    Default Re: Resolution 1680 x 1050 for external monitor does not work

    init 5 needs to be enabled to startx
    from a terminal in kde type init 5 as root then again login
    or
    from the initial login screen, under one of the buttons, choose termin login

    correct detection of the graphics card is confirmed by,
    "01:00.0 VGA compatible controller: ATI Technologies Inc M76 [Radeon Mobility HD 2600 Series]"

    some Asus laptops require higher color depths than 256 for correct operation for the larger displays

    to confirm, did you say all work ok when the vga cable is used?

  4. #24
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    Default Re: Resolution 1680 x 1050 for external monitor does not work

    When using the vga cable the monitor does not switch between display and black. But I noted a slight glimmer but this affects all resolutions.

    Something I also noticed: The external monitor sometimes shows the message "Input not supported." when it is connected by the DVI cable (1680x1050 resolution). According to this I think the DVI port or the whole card could be broken...It could be possible as I tried to remove the whole laptop case (which didn't work) and applied some force to the whole laptop...a contact of a pin could be damaged I guess Unfortunately I don't have another monitor with DVI...I will try another VGA monitor tomorrow...

    I connected the monitor before booting and tested all possible settings (with keys shortcuts and without). The problem persists.
    Booting into a terminal (selecting text mode at the login screen) and then e.g. executing "xrandr -q" in order to set up the monitors fails with "Can't open display".

  5. #25
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    Default Re: Resolution 1680 x 1050 for external monitor does not work

    Fn-F8 switches DVI+VGA+TV outputs on or off
    so they should be all there or none

    if the vga output functions and the DVI not then it looks like a graphics card, monitor or DVI cable failure
    a hardware not software problem

    xrandr needs X11 to be up and running, so it can only be run after the gui is functional

    the message "Input not supported." at boottime is considered not relevant
    occassionally the same is seen on this OS
    on start-up there is no guarentee of RAM state

  6. #26
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    Default Re: Resolution 1680 x 1050 for external monitor does not work

    I tested the resolution 1680x1050 on the monitor with Windows 7 as it is installed in parallel on my laptop. It works perfectly. After reboot (without any changes) into openSUSE the monitor turns black, displays the display again and again with the 1680x1050 resolution - the same problem as always

    I also tried another monitor (VGA + DVI). There I could use the highest available resolution without any problems (but I could not test the 1680x1050 resolution as it is a smaller monitor).

    I'm sorry. I think my explaination wasn't suffcient: The "Input not supported." message was not shown during booting. It appeared on the external monitor after some black-display cycles (when the external monitor was set to 1680x1050).

  7. #27
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    Default Re: Resolution 1680 x 1050 for external monitor does not work

    if all works under window there is obviously nothing wrong with the hardware

    with two monitors plugged in before booting can you paste the following,
    output of lspci,
    output of xrandr
    copy of file /etc/X11/xorg.conf.d/50-device.conf
    copy of file /etc/X11/xorg.conf.d/50-monitor.conf
    copy of file /etc/X11/xorg.conf.d/50-screen.conf

  8. #28
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    Default Re: Resolution 1680 x 1050 for external monitor does not work

    Quote Originally Posted by oldcpu View Post
    I assume that is the output using xrandr with the radonhd driver.

    There are various xrandr tutorials on the web, such as this one: Xorg RandR 1.2 - ThinkWiki

    but I am not familiar with "PANEL" nor "DVI-D" nor "Screen 0" being lablels for graphic devices. I'm more familiar with VGA and LVDS.
    Did I miss something along the way ? I can't see where you posted your result of trying xrandr with PANEL and DVI-D and/or Screen 0 ??

  9. #29
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    Default Re: Resolution 1680 x 1050 for external monitor does not work

    in post #27 forgot to ask,
    at the bootloader screan,
    in the command line,
    what is the info vga=?

  10. #30
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    Default Re: Resolution 1680 x 1050 for external monitor does not work

    This is the boot parameter line at grub:
    nomodeset vga=0x317
    @oldcpu: I tested xrandr - but setting the resolution with it did not work either. The result is the same as with the GUI settings (see #17)

    output of lspci
    output of xrandr
    copy of file /etc/X11/xorg.conf.d/50-device.conf
    copy of file /etc/X11/xorg.conf.d/50-monitor.conf: Just contains comments
    copy of file /etc/X11/xorg.conf.d/50-screen.conf: Just contains comments

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