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Date:      Tue, 26 Jan 2010 14:28:03 +0000
From:      Alexey Dokuchaev <danfe@FreeBSD.org>
To:        Dag-Erling Sm??rgrav <des@des.no>
Cc:        svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org, Jung-uk Kim <jkim@FreeBSD.org>
Subject:   Re: svn commit: r198858 - in head/sys: dev/fb dev/syscons sys
Message-ID:  <20100126142803.GA55760@FreeBSD.org>
In-Reply-To: <86ljflj798.fsf@ds4.des.no>
References:  <200911032022.nA3KM96H003434@svn.freebsd.org> <20100125192941.GA9196@FreeBSD.org> <86ljflj798.fsf@ds4.des.no>

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On Tue, Jan 26, 2010 at 03:00:35PM +0100, Dag-Erling Sm??rgrav wrote:
> Alexey Dokuchaev <danfe@FreeBSD.org> writes:
> > Apparently this revision broke logo screen saver w/ vesa.ko on i386 (it
> > works, but image is significantly darker).
> 
> A darker image indicates that the BIOS is in 8-bit mode but the driver
> thinks it's in 6-bit mode, so the driver right-shifts the palette
> entries by two bits.

Yup, I eventually started to think this is the case after reading
through the code and the patch jkim@ sent me privately (which fixed the
issue).

Considering number of recent vesa/saver breaks, I am thinking about some
regression test suit that could at least check for "8-bit vs. 6-bit" type
of things.  Is it feasible?

./danfe



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