Re: Linux 2.6.31-rc7

[Jesse Barnes <jbarnes@virtuousgeek.org>]

On Wed, 26 Aug 2009 10:12:14 -0700 (PDT)
Linus Torvalds <torvalds@linux-foundation.org> wrote:
> In all three cases the end result is "no EDID", but regardless of
> that, the correct action is basically _never_ to say "ok, I'll just
> assume that the display is on connector XYZ regardless of what the
> state of the graphics chip is".

Yeah, that's normal.  Most builtin panels don't have EDIDs.  Failures
on attached monitors are potentially more serious.

> > so yes I think do better at failing is what is needed, its still
> > failing but its more user friendly fail.
> 
> Yes. If something fails ("oops, I can't seem EDID for any
> connector"), I wish KMS would fail way better than just default to
> some crazy setup. The failure mode should be to at least drive
> whatever the BIOS enabled.

Right, we need to improve our detection heuristics.  We've recently
added some to catch non-existent LVDS displays, but currently don't
have any for VGA.  Using the current configuration as a guide is a
reasonable addition...

-- 
Jesse Barnes, Intel Open Source Technology Center