Date: Wed, 3 Sep 2014 14:57:53 +0000 From: Alexey Dokuchaev <danfe@FreeBSD.org> To: Ed Maste <emaste@freebsd.org> Cc: svn-src-stable@freebsd.org, "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>, "src-committers@freebsd.org" <src-committers@freebsd.org>, svn-src-stable-10@freebsd.org Subject: Re: svn commit: r271023 - stable/10/sys/dev/vt Message-ID: <20140903145753.GA25935@FreeBSD.org> In-Reply-To: <CAPyFy2B8F_mWOeTGXormEQ2amzQ00rFotmsNpXmgaKTy63DYzA@mail.gmail.com> References: <201409031400.s83E0bK6049810@svn.freebsd.org> <20140903140757.GA7494@FreeBSD.org> <CAPyFy2B8F_mWOeTGXormEQ2amzQ00rFotmsNpXmgaKTy63DYzA@mail.gmail.com>
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On Wed, Sep 03, 2014 at 10:34:21AM -0400, Ed Maste wrote: > On 3 September 2014 10:07, Alexey Dokuchaev <danfe@freebsd.org> wrote: > > I'm also wondering why on PowerPC vt(4) behaves much better (switching is > > instant, no artifacts at all). > > The VGA vt(4) issues all stem from the relatively complex and arcane > VGA hardware and a somewhat limited vt_vga implementation. Can you elaborate a bit on the technical side of things? Particularly, it looks strange that syscons(4) was able to work just fine on "relatively complex and arcane VGA hardware", while more modern vt(4) is fighting with problems. Don't get me wrong, I greatly appreciate all of you guys' work, just want to understand better what are the challenges you're facing. Thank you, ./danfe
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