Preferred mode for Samsung Syncmaster 225BW not working
Submitted by Michael Schmuker
Assigned to Xorg Project Team
Description
Created attachment 36267 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
Attachment 36267, "output of xrandr --verbose (monitor is connected to HDMI2)":
xrandr-verbose.txt
Version: 7.5 (2009.10)