linux-kernel - Re: Baytrail/T (ASUS T100 etc) regression from 3.13 onwards

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Message-ID: <20140211114524.42ceefa5@jbarnes-desktop>
Date:	Tue, 11 Feb 2014 11:45:24 -0800
From:	Jesse Barnes <jbarnes@...tuousgeek.org>
To:	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>
Cc:	Greg KH <gregkh@...uxfoundation.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Baytrail/T (ASUS T100 etc) regression from 3.13 onwards

On Tue, 11 Feb 2014 18:28:12 +0000
One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk> wrote:

> O> > According to the reg dumps, this is actually a MIPI panel we're failing
> > > to bring up properly.  We're working on that issue, but in the
> > > meantime, maybe something like the below would work for you?
> > 
> > A module paramater to fix a bug?  Ugh, that's almost worse than just
> > reverting the original patch, right?
> > 
> > Please don't do this, the distros will hate you even more than they
> > currently do :)
> 
> Can we just turn hot plug detection off if a panel is present for now ?

Looks like another option would be to add an 'e' to your forced boot
line.  That should prevent the detection stuff from running.  E.g. in
your case:
video=VGA-1:1366x768e

There's some info on this in Documentation/fb/modedb.txt

-- 
Jesse Barnes, Intel Open Source Technology Center
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