Created attachment 36267 [details] output of xrandr --verbose (monitor is connected to HDMI2) The Samsung SyncMaster 225BW flashes black when connected via DVI and enabled via xrandr --output <x> --preferred. It appears that the default modeline for the 1680x1050 resolution is not compatible with the display. Adding a custom modeline with xrandr restores function of the display. Default modeline (from xrandr --verbose) 1680x1050 (0x4f) 146.2MHz -HSync +VSync +preferred h: width 1680 start 1784 end 1960 total 2240 skew 0 clock 65.3KHz v: height 1050 start 1053 end 1059 total 1089 clock 60.0Hz Any of these modelines work, when added and enabled via xrandr xrandr --newmode "1680x1050+h+v" 119.00 1680 1728 1760 1840 1050 1053 1059 1080 +hsync +vsync xrandr --newmode "1680x1050+h-v" 119.00 1680 1728 1760 1840 1050 1053 1059 1080 +hsync -vsync xrandr --newmode "1680x1050-h+v" 119.00 1680 1728 1760 1840 1050 1053 1059 1080 -hsync +vsync xrandr --newmode "1680x1050-h-v" 119.00 1680 1728 1760 1840 1050 1053 1059 1080 -hsync -vsync See also the original bug report against opensuse factory: https://bugzilla.novell.com/show_bug.cgi?id=613165
On Mon, Jun 14, 2010 at 08:15:57 -0700, bugzilla-daemon@freedesktop.org wrote: > The Samsung SyncMaster 225BW flashes black when connected via DVI and enabled > via xrandr --output <x> --preferred. It appears that the default modeline for > the 1680x1050 resolution is not compatible with the display. Adding a custom > modeline with xrandr restores function of the display. > please attach the X log.
Created attachment 36280 [details] X log of my current session Attached X log of the session I have currently running.
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