User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1) Gecko/20090630 Fedora/3.5-1.fc11 Firefox/3.5 There are several bugs relating to gnome-display-properties and rotated monitors; I hope that clearing up this single bug may help to solve many others. In "Drag the monitors to set their place", rotated monitors (portrait) appear rotated but in positioning them relative to another monitor are treated as though they have their unrotated geometry (landscape). and the images cannot be placed horizontally adjacent to another monitor. This is *not* merely an issue with a graphical illustration! The result is an actual gap between the views, and objects can be lost in the gap between the screens, and windows that span the two monitors are only partly visible (in my case the gap is 50% the width of the "gnome-display-properties == Display Preferences" window.) Furthermore the geometry errors give other difficulties in aligning the windows. There seems to be some snap-to-grid action going on, and that grid seems informed by the wrong geometry. As a consequence it is easy to get an external monitor where the origin of the desktop is actually several cm into the monitor, and difficult to get things aligned in a reasonable way. There are other problems which might be connected in some way with this inconsistency of rotated windows; see: Bug 493069 - cursor isn't rotated in dualhead setup with one rotated and one normal display Bug 510054 - Rotating external display crashes displays applet, can't rotate it back Bug 510074 - rotated monitor display is offset Bug 489923 - i965 multi-head rotating problem Bug 494633 - gnome-display-properties: Rotation options for primary display are incorrect Bug 474305 - gnome-display-properties does not expand desktop correctly when enabling second monitor with Intel 945 graphics Reproducible: Always Steps to Reproduce: 1. Open gnome-display-properties. 2. Activate a second monitor. 3. Drag it around the first and notice how it snaps to be perfectly adjacent to the first monitor. 4. Now rotate the second monitor and notice how it behaves as though it wasn't rotated. Try to place the rotated second monitor immediately to the left of the first. Then move the properties window between the two monitors.
I am also experiencing this problem. My setup is two rotatable 1600x1200 monitors. In portrait rotation (left) there is a horizontal space between the two monitors, both on the illustration and in "reality". As well, the monitors can then be placed on top of one another in the vertical direction (again both in the illustration and in reality). I think that this bug is independent of the bugs above. In my view this is a significant bug in the applet.
This appears to be fixed in the F12 RC as far as I can tell - I don't have an Intel 945 video setup. I tried it out on a dual-screen machine (nvidia graphics card, nouveau driver). Everything appears to be working fine (almost!). Rotating the monitors allowed them to touch each other and the displayed geometry matched the actual geometry. The cursor also rotated correctly (although this may be particular to the graphics card / driver). The only "glitch" is that initially side-by-side monitors don't touch on the display when one is rotated from horizontal to vertical, but moving one of them snaps them together. I don't view this as a significant problem, but it might be nicer to have the monitor snap together. The problem also works the other way - after a rotation to horizontal, one monitor may occlude part of the other. Both of these situations can result in artifacts in the actual display - accepting a separated or an occluded setup on the applet window results in separated or overlapped displays.
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