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Hi, I am experiencing troubles with dual monitors in fedora 16. During boot time both monitors are working, but when system starts one monitor automatically shut down. It happend out ...
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  1. #1
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    Fedora 16 dual monitor - dual head - automatic monitor shutdown


    Hi, I am experiencing troubles with dual monitors in fedora 16. During boot time both monitors are working, but when system starts one monitor automatically shut down. It happend out of the blue. Some time before when I updated system this happend but then I booted older kernel release and everything was fine, now this did not helps.

    When it used to work it looked like this:

    Code:
        [marek@dev etc]$ xrandr 
        Screen 0: minimum 320 x 200, current 2560 x 1024, maximum 8192 x 8192
        VGA1 connected 1280x1024+1280+0 (normal left inverted right x axis y axis) 340mm x 270mm
           1280x1024      75.0*+   60.0  
           1024x768       75.1     70.1     60.0  
           832x624        74.6  
           800x600        72.2     75.0     60.3     56.2  
           640x480        72.8     75.0     66.7     60.0  
           720x400        70.1  
        HDMI1 connected 1280x1024+0+0 (normal left inverted right x axis y axis) 340mm x 270mm
           1280x1024      60.0*+   75.0  
           1152x864       75.0  
           1024x768       75.1     70.1     60.0  
           832x624        74.6  
           800x600        72.2     75.0     60.3  
           640x480        72.8     75.0     60.0  
           720x400        70.1  
        DP1 disconnected (normal left inverted right x axis y axis)
    In past times (when it worked with older kernel) I tried to unplug the working monitor (VGA1) and leave only this that did not worked (HDMI1) to see what will happend, then this message appeared during boot and monitors shuts down "fast tsc calibration failed monitor or display problem". I did not tried it yet, should I ?

    Now it looks like this:

    Code:
        [marek@dev ~]$ xrandr 
        Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 8192 x 8192
        VGA1 connected 1280x1024+0+0 (normal left inverted right x axis y axis) 340mm x 270mm
           1280x1024      75.0*+   60.0  
           1280x960       60.0  
           1280x800       74.9     59.8  
           1152x864       75.0  
           1280x768       74.9     59.9  
           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  
           720x400        70.1  
        HDMI1 disconnected (normal left inverted right x axis y axis)
        DP1 disconnected (normal left inverted right x axis y axis)

    Actual configuration:

    Code:
        [marek@dev ~]$ sudo cat /etc/grub2.cfg | grep menuen
        menuentry 'Fedora (3.6.6-1.fc16.x86_64)' --class fedora --class gnu-linux --class gnu --class os {
        menuentry 'Fedora (3.6.5-2.fc16.x86_64)' --class fedora --class gnu-linux --class gnu --class os {
        menuentry 'Fedora (3.6.2-1.fc16.x86_64)' --class fedora --class gnu-linux --class gnu --class os {
        menuentry "Windows 7 (loader) (on /dev/sda1)" --class windows --class os {
        [marek@dev ~]$ uname -a
        Linux dev.fei.tuke.sk 3.6.2-1.fc16.x86_64 #1 SMP Wed Oct 17 05:30:01 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
        [marek@dev ~]$ ls  /etc/X11/xorg.conf
        ls: cannot access /etc/X11/xorg.conf: No such file or directory

    dmesg is here [ 0.000000] Initializing cgroup subsys cpuset [ 0.000000] Initializing cg - Pastebin.com

    Many thanks

  2. #2
    Linux Guru Rubberman's Avatar
    Join Date
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    I can be found either 40 miles west of Chicago, in Chicago, or in a galaxy far, far away.
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    Given the age of this post I would hope you sorted it out. If not, then my guess is that you also need to update your video drivers, if not default ones built into the kernel. If default, then you may have run into a bug in either the driver or x-org itself.
    Sometimes, real fast is almost as good as real time.
    Just remember, Semper Gumbi - always be flexible!

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