Date: Tue, 26 Jan 2010 15:00:35 +0100 From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no> To: Alexey Dokuchaev <danfe@FreeBSD.org> 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: <86ljflj798.fsf@ds4.des.no> In-Reply-To: <20100125192941.GA9196@FreeBSD.org> (Alexey Dokuchaev's message of "Mon, 25 Jan 2010 19:29:41 %2B0000") References: <200911032022.nA3KM96H003434@svn.freebsd.org> <20100125192941.GA9196@FreeBSD.org>
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Alexey Dokuchaev <danfe@FreeBSD.org> writes: > Jung-uk Kim <jkim@FreeBSD.org> writes: > > Log: > > Fix VESA color palette corruption: > >=20=20=20 > > - VBE 3.0 says palette format resets to 6-bit mode when video mode ch= anges. > > We simply set 8-bit mode when we switch modes if the adapter supports= it. > 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. Perhaps the BIOS is lying? DES --=20 Dag-Erling Sm=C3=B8rgrav - des@des.no
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