Bug 1010253 - GRUB should use efifb driver for graphic fallback
GRUB should use efifb driver for graphic fallback
Product: Fedora
Classification: Fedora
Component: xorg-x11-drivers (Show other bugs)
Unspecified Unspecified
unspecified Severity unspecified
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Assigned To: X/OpenGL Maintenance List
Fedora Extras Quality Assurance
Depends On:
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Reported: 2013-09-20 07:30 EDT by Jan Sedlák
Modified: 2015-06-29 08:25 EDT (History)
5 users (show)

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Doc Type: Bug Fix
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Last Closed: 2015-06-29 08:25:00 EDT
Type: Bug
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Description Jan Sedlák 2013-09-20 07:30:55 EDT
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 07:34:41 EDT
Correction - driver is not called fbdev, but efifb.
Comment 2 Jan Sedlák 2013-09-20 07:45:48 EDT
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 08:18:57 EDT
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 05:04:32 EDT
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 18:16:44 EDT
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 05:25:42 EDT
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