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On my first install (web server, NO basic video driver, minimal components) the command line had high resolution (1280x1024?). On a later install (web server, YES basic video driver, X ...
  1. 05-24-2011 #1
    Hernalt
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    N00b admin: RHEL6 command line / black screen resolution

    On my first install (web server, NO basic video driver, minimal components) the command line had high resolution (1280x1024?).

    On a later install (web server, YES basic video driver, X Windows components / GUI, tons of other stuff I might want) the command line is low (800x600?).

    I'd like to have 1280x1024 command line always for root and users. (And have flexibility to init 3,5 as needed.)

    What info can I get to help diagnose this?

    Thank you in advance

    Edit: changed "capabilities" to "driver"
    Last edited by Hernalt; 05-24-2011 at 04:35 AM.
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  2. 05-24-2011 #2
    Rubberman
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    This is probably a video driver issue. What video hardware and driver for X are you using?
    Sometimes, real fast is almost as good as real time.
    Just remember, Semper Gumbi - always be flexible!
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  3. 05-24-2011 #3
    Hernalt
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    lspci |grep VGA gives "VGA compatible controller: ATI Technologies Inc RV380 0x3e50 [Radeon X600]"

    I used Xorg -configure and swapped xorg.conf.new for xorg.conf

    //etc/X11/xorg.conf lists:
    Monitor: DELL 1800FP
    Card: ATI Technologies Inc RV380 0x3e50 [Radeon X600]

    How do I query the driver for X?
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  4. 05-24-2011 #4
    Hernalt
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    Work time is limited.

    I reinstalled, no basic video driver, all the components I need to investigate, GUI/X11.

    Now it boots fine into high resolution, GUI in high res, CTRL-ALT-F2 to high res, init 3, init 5 to high res.

    I'm happy.

    But now I don't see //etc/X11/xorg.conf
    That tells me my prior install might not have been reading from that file...
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  5. 05-24-2011 #5
    HROAdmin26
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    1) Newer versions of Xorg don't use/need the xorg.conf file. (But if it is created/exists, it should take precedence over the auto-config settings.)

    2) X resolution has no relation to the "shell" resolution. You can generally set the "shell" resolution via the kernel mode setting (Google).

    Example from SLES (Grub V1):

    Code:
    cat /boot/grub/menu.lst
...
kernel /boot/vmlinuz-2.6.16.60-0.54.5-default root=/dev/sda1 vga=0x314 splash=silent showopts
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  6. 05-24-2011 #6
    Rubberman
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    Quote Originally Posted by HROAdmin26 View Post
    1) Newer versions of Xorg don't use/need the xorg.conf file. (But if it is created/exists, it should take precedence over the auto-config settings.)

    2) X resolution has no relation to the "shell" resolution. You can generally set the "shell" resolution via the kernel mode setting (Google).

    Example from SLES (Grub V1):

    Code:
    cat /boot/grub/menu.lst
...
kernel /boot/vmlinuz-2.6.16.60-0.54.5-default root=/dev/sda1 vga=0x314 splash=silent showopts
    Actually, the video driver CAN influence the console resolution. I know that the nVidia nouveau driver certainly does!
    Sometimes, real fast is almost as good as real time.
    Just remember, Semper Gumbi - always be flexible!
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  7. 05-24-2011 #7
    HROAdmin26
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    Nowhere did I mention the video driver. The video card's capabilities will always matter (not going to get high resolution on a 4MB card or a really generic driver.)

    I have not seen any "auto" settings override the kernel-line mode setting loaded by Grub, but I would not say I've checked enough to say it's out of the question.
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