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

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Message-ID: <20140211205842.5804c2f5@alan.etchedpixels.co.uk>
Date:	Tue, 11 Feb 2014 20:58:42 +0000
From:	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>
To:	Jesse Barnes <jbarnes@...tuousgeek.org>
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 11:45:24 -0800
Jesse Barnes <jbarnes@...tuousgeek.org> wrote:

> 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

Confirmed, tested and bug plus relevant people updated.

Thanks

Alan
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