Bug 1010253

Summary: GRUB should use efifb driver for graphic fallback
Product: [Fedora] Fedora Reporter: Jan Sedlák <jsedlak>
Component: xorg-x11-driversAssignee: X/OpenGL Maintenance List <xgl-maint>
Status: CLOSED EOL QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 20CC: dennis, igor.zubkov, mads, pjones, xgl-maint
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Last Closed: 2015-06-29 12:25:00 UTC Type: Bug
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Description Jan Sedlák 2013-09-20 11:30:55 UTC
Description of problem:
Since UEFI systems cannot rely on VESA driver, GOP (xdriver=fbdev) should be used instead for graphic fallback.

I have tested it on several UEFI machines and fbdev works on all of them, sometimes even better than VESA.

Comment 1 Jan Sedlák 2013-09-20 11:34:41 UTC
Correction - driver is not called fbdev, but efifb.

Comment 2 Jan Sedlák 2013-09-20 11:45:48 UTC
Mea culpa, I mistook fbdev for efifb even when I have tested it. Efifb driver doesn't work. But idea remains the same. Since UEFI machines cannot rely on VESA driver, grub should use efifb ideally (when it will work...).

Comment 3 Mads Kiilerich 2013-09-21 12:18:57 UTC
You say "GRUB should use" ... but also talk about xdriver= .

Please clarify what it is that should change ... and in what way GRUB could change it.

Comment 4 Jan Sedlák 2013-10-02 09:04:32 UTC
I thought that what's default in kernel line is GRUB responsibility... My idea was to use xdriver=efifb instead of vesa on UEFI machines, but I am testing it now and it's kind of strange, it really doesn't work. I will do more testing.

Anyway, if grub isn't responsible for default values in kernel line (e. g. xdriver), what is?

Comment 5 Mads Kiilerich 2013-10-02 22:16:44 UTC
Anaconda writes /etc/default/grub, it runs grub2-mkconfig which reads that and writes grub.cfg.

However, KMS and X should automatically figure out how to do the right thing. Adding configuration is the wrong solution.

Comment 6 Fedora End Of Life 2015-05-29 09:25:42 UTC
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Comment 7 Fedora End Of Life 2015-06-29 12:25:00 UTC
Fedora 20 changed to end-of-life (EOL) status on 2015-06-23. Fedora 20 is
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