Date: Fri, 23 Mar 2012 19:00:24 GMT From: Jung-uk Kim <jkim@FreeBSD.org> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/166262: [syscons] syscons issue on DN2800MT Message-ID: <201203231900.q2NJ0OYf020471@freefall.freebsd.org>
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The following reply was made to PR kern/166262; it has been noted by GNATS. From: Jung-uk Kim <jkim@FreeBSD.org> To: bug-followup@FreeBSD.org Cc: frankreppin@googlemail.com Subject: Re: kern/166262: [syscons] syscons issue on DN2800MT Date: Fri, 23 Mar 2012 14:55:10 -0400 > Hellos and thankyou for looking into this PR! > > On Fri, Mar 23, 2012 at 12:03 AM, Jung-uk Kim <jkim@freebsd.org> wrote: > > Hmm... It seems these platforms don't fully initialize VGA > > registers. According to the product pages, this board has "Intel > > Fast Boot Technology", which sounds like "we don't care about > > legacy VGA modes any more" to me. ;-) > well - when attempting to boot from the memstick images I can > clearly see everything - the whole 'BTX loader' stuff and everything > up to and until the 'Welcome to FreeBSD' boot menu. Up to this point > everything looks really ok. The 'messed up display' starts right > after pressing '1' to boot. > > Shouldn't it show the 'BTX loader' stuff garbled as well then if > they don't care about legacy VGA modes then? I am not so sure about that. FYI, BTX uses BIOS int 10h calls and kernel directly accesses VGA hardware and memory. > > I saw Intel's video presentation on YouTube and it showed a BIOS > > option to disable "Fast Boot" from Boot menu. Try to disable it if > > you have something similar, especially "Video Optimization" or > > something. > Just re-checked on this. Those boot options are 'disabled' by > default (and disabled as well in my setup). Okay. > According to the inline BIOS help they won't do any magic beside not > showing the fancy Intel logo graphic. Maybe you do not have the BIOS that I saw from YouTube presentation. :-( > They too state clearly there that this won't affect capabilities > when it comes to boot the OS. Which OS? MS Windows? ;-) > There aren't any more video optimization inside the BIOS. I see. > Please let me know if I can be of help to get this sorted. Sorry, there is something strange going on with writing to video memory. That's all I can say ATM. :-/ Jung-uk Kim
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