GNOME Bugzilla – Bug 563941
The screen display moves to the right when I change the refresh rate
Last modified: 2009-02-27 02:01:16 UTC
Please describe the problem: When I change the refresh rate from 60 Hz to 75 Hz, the display of my screen moves to the right, so a part of the screen display is hidden in the right and a part of the screen display is black in the left. Steps to reproduce: 1. Open the Screen resolution dialog. 2. Change the refresh rate from 60 Hz to 75 Hz. Actual results: The screen display moves to the right, so to the left, there's a vertical black space, and to the right, a part of the programs that's hidden. Expected results: Just see correctly all the screen display. Does this happen every time? Yes. Other information: More information: Resolution: 1280x1024 Rotation: normal Refresh rate: 60 Hz (the screen display is correct) or 75 Hz (the screen display is moved to the right) OS: Ubuntu 8.10 Screen: Samsung SyncMaster 701n
Can you hit the "resync" or "auto-calibrate" option in your monitor? If your xorg.conf does *not* define the modeline for 75 Hz or if it does not specify a preferred set of modes, then gnome-display-properties is probably just showing a mode which the X server obtained from the EDID data from your monitor.
Created attachment 129581 [details] My xorg.conf file I attach my xorg.conf file.
There's no modeline defined in my xorg.conf. I've hit the auto-calibrate option in my monitor and it resolved the bad display. Thanks a lot! Was it a bug? I don't know enough about this subject to see if it's a bug or not.
Hmm, not really a bug. Monitors sometimes are just dumb and need to be re-calibrated by hand, even if you *do* use the modelines they say they want.