Date: Sun, 13 Jul 2008 01:52:36 +0200 From: Zbigniew Baniewski <zb@ispid.com.pl> To: freebsd-x11@freebsd.org Subject: Re: FreeBSD7/xorg/radeon: cannot change resolution using <Ctrl>-<Alt>-<+/-> Message-ID: <20080712235235.GB5262@sarge.my.own.domain.no-net> In-Reply-To: <20080712130858.GA5296@sarge.my.own.domain.no-net> References: <20080712130858.GA5296@sarge.my.own.domain.no-net>
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After a longer search I've found some clues in thread at: http://lists.freedesktop.org/archives/xorg/2008-March/034166.html #v+ > 1) What changed in 7.3 that caused this issue? The radeon driver got xrandr 1.2 support. Previous versions of the driver assumed one monitor per driver instance while with xrandr you may have several monitors. With xrandr it is much more important to get mode information about each monitor since you may have two or more monitors connected with vastly different capabilities. The previous version of the driver more or less always assumed a monitor was connected and forced whatever mode you specified. You can still do this, but as you see, the configuration has changed a bit. This page should give you a good overview: http://www.intellinuxgraphics.org/dualhead.html #v- In the effect, the configuration became difficult; f.e. one has to generate "Modelines" (instead of just write resolutions), there are problems with the real resolution "seen" by WM (if I force 800x600 - I've got very little and blurry letters), problems while trying to have virtual screen and so on. All this caused by assumption, that most users will have at least two (if not four) monitors connected to one video card. :/ -- pozdrawiam / regards Zbigniew Baniewski
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