Date: Fri, 26 Dec 2014 06:48:02 -0500 From: Eric Gunther <egunther@warwick.net> To: ticso@cicely.de Cc: freebsd-arm@freebsd.org, Ian Lepore <ian@freebsd.org> Subject: Re: RPI, config.txt: overscan, not working Message-ID: <1419594482.1763.1.camel@warwick.net> In-Reply-To: <20141226094454.GA53062@cicely7.cicely.de> References: <1414774843.3499.18.camel@res-cmts> <1414917964.3427.2.camel@res-cmts> <1415062647.7543.9.camel@res-cmts> <1419547193.1018.181.camel@freebsd.org> <20141226094454.GA53062@cicely7.cicely.de>
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On Fri, 2014-12-26 at 10:44 +0100, Bernd Walter wrote: > On Thu, Dec 25, 2014 at 03:39:53PM -0700, Ian Lepore wrote: > > While searching for something else I just ran across this info: > > > > overscan_scale=1 caused the output of openFrameworks to respect > > the overscan_left, overscan_right, top and bottom settings with > > the use of an LCD display connected via composite. > > > > So maybe just adding that to config.txt would make your overscan > > settings work right. I found that at: > > > > http://elinux.org/RPiconfig > > I have had a similar kind of problem long time ago. > Story was a 1024x600 LC-display attached via converter to HDMI. > Per default displayed 1024x768 with last 168 rows missing at bottom > as HDMI specs only knows mode numbers with fixed resolutions. > With LCD vendor supplied config.txt parameters I made it work under > bootcode and Linux, but not under FreeBSD. > I remember that Linux/bootcode behavour was very unexpected. > I think it was something like this (don't remember exactly) in that top > overscan removed one per pixel on top and bottom overscan removed 2 pixel > on bottom, but also shifted the display up by one pixel. > Under FreeBSD however the parameters behaved differently, so that the > only option to remove bottom lines was to also remove top lines, which > left 168 unused pixels on the top. > IIRC I send a mail to this list about this problem. > Never tested again since then. > So far that seems to have worked very well. No problems reading the prompt, messages or boot. I did notice though, and this may be obvious to others, when you add overscan to one side the other side loses some. Old TV with composite inputs. Raspberry Pi Model B 512MB, FreeBSD: FreeBSD-11.0-CURRENT-arm-armv6-RPI-B-20140903-r270990.img available from, http://ftp.ksu.edu.tw/FTP/BSD/FreeBSD/snapshots/arm/armv6/ISO-IMAGES/11.0/ as well as others, I'm sure. -e > > On Mon, 2014-11-03 at 19:57 -0500, ito wrote: > > > Hi, > > > > > > > > > I Discovered that the framebuffer_width and framebuffer_height sizes > > > seem to work but the overscan_left, overscan_right, etc. not as much. > > > > > > I have settled on > > > > > > framebuffer_width=720 > > > framebuffer_height=400 > > > > > > referenced a well commented config.txt although solely added the two > > > framebuffer entries to the existing config.txt because the overscan did > > > not seem to work. > > > > > > https://raw.githubusercontent.com/Evilpaul/RPi-config/master/config.txt > > > > > > > > > Thanks for any advice, > > > > > > ito > > > > > > On Sun, 2014-11-02 at 03:46 -0500, ito wrote: > > > > Is there anyone with an idea as to how I can stop the text from spilling > > > > off the screen. > > > > > > > > The display is in excess of 1/2 an inch all around. > > > > > > > > Thanks, > > > > > > > > ito > > > > > > > > > > > > > > > > On Fri, 2014-10-31 at 13:00 -0400, ito wrote: > > > > > Hello, > > > > > > > > > > I have a raspberry pi, > > > > > > > > > > Model B Revision 2.0 (512MB) > > > > > which has the logo along with: > > > > > Raspberry Pi > > > > > (c)2011.12 > > > > > written on it. > > > > > > > > > > I have obtained a image for freebsd to run from here: > > > > > > > > > > ftp://ftp.freebsd.org/pub/FreeBSD/snapshots/arm/armv6/ISO-IMAGES/10.0/ > > > > > > > > > > > > > > > I uncompressed the image on a OpenSUSE system, and used, > > > > > > > > > > sudo dd if=FreeBSD-10.0-RELEASE-arm-armv6-RPI-B-20140131-r260789.img > > > > > of=/dev/sdd > > > > > > > > > > to put the image on a micro SD... with that card and adapter I have > > > > > successfully boot freebsd. > > > > > > > > > > The problem I am facing now is that I am using the yellow SVGA (RCA type > > > > > plug) cables to use an old Television as a monitor, with this setup I > > > > > have an issue with the text running off of the screen. > > > > > > > > > > I have tried the config.txt file with > > > > > overscan_disable=0 > > > > > overscan_left=20 > > > > > overscan_right=20 > > > > > overscan_top=20 > > > > > overscan_bottom=20 > > > > > > > > > > > > > > > added to the existing config.txt > > > > > > > > > > > > > > > > > > > > I have tried to load vesa: > > > > > > > > > > kldload vesa > > > > > > > > > > where I get a prompt that it does not exist. > > > > > > > > > > I looked in the kernel directory (/boot/kernel/) and there is no vesa, > > > > > not sure what that means. > > > > > > > > > > > > > > > I am assuming that there is something that is not happening with the > > > > > config.txt. I saw mention of using the files here to replace the files > > > > > on the pi; > > > > > > > > > > https://github.com/raspberrypi/firmware > > > > > > > > > > > > > > > SO, essentially, how do I get the text to stop from spilling off of the > > > > > screen (command prompt-no gui). > > > > > > > > > > > > > > > Thank You, > > > > > > > > > > ito > > > > > > > > > > > > > _______________________________________________ > > > freebsd-arm@freebsd.org mailing list > > > http://lists.freebsd.org/mailman/listinfo/freebsd-arm > > > To unsubscribe, send any mail to "freebsd-arm-unsubscribe@freebsd.org" > > > > > > > > _______________________________________________ > > freebsd-arm@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-arm > > To unsubscribe, send any mail to "freebsd-arm-unsubscribe@freebsd.org" >home | help
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