[bug #26773] Don't use graphics mode on card that doesn't support graphics

[Timothy Miller]

URL:
  <http://savannah.gnu.org/bugs/?26773>

                 Summary: Don't use graphics mode on card that doesn't
support graphics
                 Project: GNU GRUB
            Submitted by: theosib
            Submitted on: Wed 10 Jun 2009 02:58:59 PM GMT
                Category: User Interface
                Severity: Major
                Priority: 5 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: Timothy MIller
        Originator Email: address@hidden
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 0.97
         Reproducibility: None
         Planned Release: 

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Details:

This is really obscure, but I thought you might find it interesting.  I'm one
of the developers with the Open Graphics Project, and we're working on a free
VGA implementation.  At the moment, the card supports only text modes.  No VGA
or VESA graphics (yet).

If a splash screen is specified for grub, then grub ASSUMES that the card
supports graphics and uses that to display the graphical background and UI
text.  If the card does not support graphics, you get a blank screen.

For completeness and compliance, you may actually want to query the VGA BIOS
to determine if graphics is supported or not.  If it's not, ignore the splash
screen entry in grub.conf.

The work-around (which isn't necessarily always possible) is to comment out
the splash screen line from grub.conf.





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