On Thu, May 26, 2011 at 9:56 AM, Peter Jones [off-list ref] wrote:

On 05/26/2011 12:09 AM, Andrew Lutomirski wrote:

quoted

On Wed, May 25, 2011 at 2:54 PM, Andrew Lutomirski [off-list ref] wrote:

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On Wed, May 25, 2011 at 2:32 PM, Matthew Garrett [off-list ref] wrote:

quoted

On Wed, May 25, 2011 at 02:21:17PM -0400, Andrew Lutomirski wrote:

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Looking at the code, I'm a little confused how it's supposed to work.
AFAICT, unless there's a DMI match, then the driver will only load
ifthe boot code sets VIDEO_TYPE_EFI, but nothing sets that.

grub should be setting that.

It looks like grub-fedora (the git version, anyway) has a function
set_kernel_params that tries to do this.  Peter, the git tree claims
that you maintain it.  Are there any experiments you'd like me to do?
(Dumping boot_params, perhaps?)

It's a bug in grub.  If I have a splashimage then efifb works.  If I
don't, then efifb doesn't.  If I don't hear anything back soon, I'll
file a bug against Fedora.

That's expected, though I admit it's not the best thing ever. We're currently
working on not needing that bootloader at all any more, in favor of grub2,
which doesn't have this limitation.

quoted

FWIW, efifb seems really slow.

It's a non-accelerated console.  Of course it's slow.

Yes, but it's really really amazingly slow.  It's so slow that merely
enabling it doubles the time it takes to get i915 loaded.  A one-liner
to fix it is coming right now...

--Andy