Re: 2.6.29-rc3-git6: Reported regressions from 2.6.28

On Mi, 04 Feb 2009, Linus Torvalds wrote:
Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=12599
Subject : dri /dev node disappeared with 2.6.29-rc1
Submitter : Norbert Preining <preining@xxxxxxxx>
Date : 2009-01-15 13:42 (21 days old)
References : http://marc.info/?l=linux-kernel&m=123202701026647&w=4

I think this one is simply that Intel DRI now requires CONFIG_FB.

Right. I mentioned that in another bug report:
http://bugzilla.kernel.org/show_bug.cgi?id=12494

So make sure that you say yes to the CONFIG_FB question (easiest fix: just
edit the .config file and change the line "# CONFIG_FB is not set" to
"CONFIG_FB=y" and do "make oldconfig" - I realize that people think that
graphical config front-ends are simpler, but often just editing the file
is the quickest way).

The problem is that if you have a configuration under 2.6.28 without
CONFIG_FB and just call make oldconfig, or even make config and don't
know that you loose the DRM. And I was using make oldconfig (there is a
graphical config?? ;-))

There is that other bug 12494 mentioned, namely due to the disappearance
of DRM the brightness adjustment on my vaio z11 stopped working.

So maybe there should be a select FB or so under the CONFIG_DRM option
(not that I actually can program Kconfig).

Best wishes

Norbert

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Dr. Norbert Preining <preining@xxxxxxxx> Vienna University of Technology
Debian Developer <preining@xxxxxxxxxx> Debian TeX Group
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