From: Jerry Davis > On Sunday 09 December 2007 08:48, Matt Graham wrote: > > From: Jerry Davis >>> I am trying to get my Dad's computer working with his Samsung SyncMaster >>> 712N, and am having some trouble. >>> Samsung SyncMaster 712N >>> HorizSync 31.5 - 48.5 >>> VertRefresh 40.0 -70.0 >> Are those accurate? LCDs may need higher ranges for these than the monitor >> can actually do, because LCDs don't *have* Hsync and Vsync > don't really know. my Dad just emailed me, that he got it to work at 800x600 > and he can see the full screen now. > how is the resolution in X11 tied to the sync and refresh rates? could bad > values make the "native" resolution not be possible? "Native" should not be in quotes here. Unlike CRTs, LCDs have one and only one optimal resolution; the resolution that exactly corresponds to the number of pixels they have. X is very conservative wrt sync rates, and if you take a look at /var/log/Xorg.0.log, you might see a line like "Mode 1280x1024 discarded due to inadequate Hsync". I have an LG something-or-other LCD that's 1280x1024, and all normal Modes work fine. (Doublescan modes = barf, but I don't really need anything below 640x480.) Hsync is 30-95, Vsync is 55-160. Those numbers were copied directly from my old CRT. >>> Modes "1024x768" "800x600" "720x400" "648x480" >> Google says the Samsung 712N has a native resolution of 1280x1024. So edit >> xorg.conf and add that Mode to the Modes line, then restart X. Did he do this, or not? --------------------------------------------------- PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us To subscribe, unsubscribe, or to change your mail settings: http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss