bugGNU GRUB - Bugs: bug #26773, Don't use graphics mode on card...

 
 

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

Submitter:  Timothy Miller <theosib>
Submitted:  Wed 10 Jun 2009 02:58:59 PM UTC
   
 
Category:  User Interface Severity:  Major
Priority:  5 - Normal Item Group:  None
Status:  Fixed Privacy:  Public
Assigned to:  None Originator Name:  Timothy MIller
Open/Closed:  Closed Release:  Bazaar - trunk
Release:  0.97 Reproducibility:  None
Planned Release:  None

Tue 09 Feb 2010 01:46:20 PM UTC, comment #4: 

I've tested this by making vbe.c always fail. GRUB2 sanely fall back to text mode. I'm closing the bug. If it's still present in grub2 please contact me

Vladimir Serbinenko <phcoder>
Group administrator
Wed 10 Jun 2009 03:49:05 PM UTC, comment #3: 

grub2 is in the meanwhile stable.
It should be much more bugfree then grub-legacy.
I don't know what it means that Gentoo masks but Debian lenny + Ubuntu jaunty both ship with it and you can choose to install it.
I don't think there's currently any distro which uses grub2 by default, but for the next Debian release we want to make it the default.
Ubuntu is planning the same AFAIK for karmic.

Felix Zielcke <fzielcke>
Group Member
Wed 10 Jun 2009 03:27:16 PM UTC, comment #2: 

Ok.  I'll need until next week to try that.  Also, grub2 doesn't seem to be used widely.  Even Gentoo unstable masks it, and I'm not going to risk a live system.  Can you suggest a distro that uses grub2 by default?

Also, I'm not terribly worried about this bug being fixed.  Besides OGP, what other graphics card would not support VGA graphics?  It can be argued that we're the broken ones, not grub.

Thanks.

Timothy Miller <theosib>
Wed 10 Jun 2009 03:13:27 PM UTC, comment #1: 

Can you please check if it's still the case with grub2?
We don't accept anymore bug reports for the old grub-legacy. Nobody will ever fix them anyway.

Felix Zielcke <fzielcke>
Group Member
Wed 10 Jun 2009 02:58:59 PM UTC, original submission:  

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.

Timothy Miller <theosib>

 

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    Follow 3 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2010-02-09 phcoder StatusNone Fixed
        Open/ClosedOpen Closed
        ReleaseNone Bazaar - trunk

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