Date: Thu, 17 Nov 2005 18:05:21 +1030 From: Malcolm Kay <malcolm.kay@internode.on.net> To: Eric Murphy <eam404@earthlink.net> Cc: freebsd-questions@freebsd.org Subject: Re: Intresting X Question... Message-ID: <200511171805.21339.malcolm.kay@internode.on.net> In-Reply-To: <437ADCF2.4090801@earthlink.net> References: <437ABD20.90001@earthlink.net> <200511161745.05117.malcolm.kay@internode.on.net> <437ADCF2.4090801@earthlink.net>
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On Wed, 16 Nov 2005 05:47 pm, Eric Murphy wrote: > Malcolm Kay wrote: > >On Wed, 16 Nov 2005 03:31 pm, Eric Murphy wrote: > >>Maybe some body can explain this alittle better then my > >> google searchs and other readings. > >> > >>My question is this: Lets say your installing BSD on some > >>workstation, you dont know the hardware specs of the monitor > >>(Vertical and Horizontal rates ect..) and you need to > >>configure Xorg. Its my understanding that Xorg runs > >> getconfig, which determines the video card type and monitor > >> type. Once it has that information it applys the > >> information gatherd to the xorg config. Is that how it > >> works? I was going to say, it cant just test a bunch of > >> differnt monitor rates that could cause damage to the > >> monitor. > > > >Most modern monitors respond to Xorg's enquiry over an I2C > > bus as to its capabilities. > >If this doesn't work then maybe: > >* The monitor is too old. > >* The monitor doesn't subscribe to the 'standards'. > >* Somehow the I2C bus is not working. > >* The monitor manufacturer was overly optermistic when > > setting up the information base for reporting over I2C > > > >It is not a trial and error situation. > > > >Malcolm > > > >>However today in one of our labs I installed bsd on a > >> machine and was unable to get xorg working properly becuase > >> getconfig wasnt issueing the correct H and V rates for the > >> monitor, I didnt know what to do without having to look it > >> up. Anyway if someone could explain this process I would be > >> much obliged. Thanks > > If thats the case, why did it work with linux running Xorg? > So I guess the main way to do it, if you want to figure out > the values, is look at the example xorg.conf and see what > values it pulled? Probably because linux retrieved the values from the monitor. Why didn't Xorg on FreeBSD? Maybe there is a faulty connection in the monitor lead; maybe a lot of things. But I suspect example.org is not the way to go. You should be able to see what linux actually found/setup in one of the xorg log files. Try perusing /var/log/Xorg.0.log Malcolm
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