On Sunday 09 December 2007 10:35, Matt Graham wrote: > 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? > yes he did, and he got a startup error on X so I told him to leave the Modes line completely out, and try to see what is Autodetected, and up came 800x600 which he says he is content to be in. > > > --------------------------------------------------- > 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 -- Happy Trails! Jerry KE7JVW Hobbit Name: Pimpernel Loamsdown Registered Linux User: 275424 This email's random fortune: Q: Who cuts the grass on Walton's Mountain? A: Lawn Boy. --------------------------------------------------- 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