Full resolution for XF86 (Red Hat EL3) on a Macbook

Discussion in 'Parallels Desktop for Mac' started by glasser, Oct 7, 2006.

  1. glasser

    glasser

    Messages:
    4
    I have a VM on my MacBook running Ubuntu; its X server is xorg, and it properly is capable of using the MacBook's full resolution (1280x800, I believe).

    I also have a VM on which I just installed RHEL3. Its X server is XF86. Try as I might, I can't figure out the corrent /etc/X11/XF86Config magic to make it run at full resolution. The RedHat GUI "displays" control panel doesn't list that as an option, either. Does anybody have XF86 running on a MacBook at full resolution and might share their Monitors section (or whatever is necessary)?

    Thanks,
    Dave
     
  2. donnie

    donnie

    Messages:
    28
    For Ubuntu, try adding one custom resolution in Parallels for 1280x800. Then, turn on the Ubuntu VM and run 'sudo dpkg-reconfigure xserver-xorg'. Accept defaults (unless you know what you're doing) and definitely allow it to auto-detect monitor and communicate with video driver. Accept the resulting defaults from the detection and communication. It will create the xorg.conf file for you with correct sync/refresh and resolution mode lines.
     
  3. glasser

    glasser

    Messages:
    4
    ... no, *not* Ubuntu :)

    Hmm, I think you missed my point -- x.org and Ubuntu work *fine*, but I'm trying to get an RHEL3 / XF86 VM to go 1280x800.
     
  4. donnie

    donnie

    Messages:
    28
    Sorry, I did misread you. Presumably you've set up the custom resolution in Parallels for 1280x800 before running the X configurator in Redhat?
     
  5. glasser

    glasser

    Messages:
    4
    Aha, thanks Donnie, I had not tried that. It doesn't seem to help, though. (What does it actually do?) I am now selecting 1280x800 successfully in redhat-config-xfree86, but it doesn't actually change the resolution all the way to that (I think it ends up at 1024x768).
     
  6. donnie

    donnie

    Messages:
    28
    This sounds weird, I know, but I had to create a phony custom resolution a step up from my real one in order to get the real one to "take" in the guest vm. In other words, my custom resolutions contain:
    1680x1050
    1920x1200
    . . . Even though 1680x1050 is my real resolution. This trick works on my machine, but I don't know why (or even why it's necessary).
     

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