On 08/01/2012 11:33 PM, John R Pierce wrote: > On 08/01/12 9:21 PM, Rob Kampen wrote: >> just wondering which driver I need to be looking at / for that deals >> with the laptop's external video connector. > the video hardware driver > >> Background - went to deliver a presentation last week and found that >> there was no way to get any video output to the external D-15 >> connector (hooked up to a video projector). >> Eventually I re-booted to windoze 7 and all worked just fine - major >> embarrassment after telling everyone how great Linux was. >> >> The laptop has a nvidia GTX 460M card and I use the el-repo >> kmod-nvidia-295.59-1.el6.elrepo.x86_64 >> and >> nvidia-x11-drv-295.59-1.el6.elrepo.x86_64 >> >> I do have compiz-0.8.2-24.el6.x86_64 and >> compiz-gnome-0.8.2-24.el6.x86_64 running but as these should not be >> dealing directly with the hardware am not thinking they should matter. >> >> Not sure where to start trouble shooting - I tried lots of different >> screen resolutions via the System > Preferences > Display but no joy >> getting any signal out to the external connector. This laptop does >> have an hdmi socket but I was not using that, I thought the good old >> fashioned D-15 video plug should "just work" (tm). >> >> The function key <Fn> <F8> did toggle the laptop screen off and on and >> varied the resolution of the laptop display but never any output on >> the external connector. > those laptop graphics chips treat the VGA connector like a 2nd monitor, > I have no idea how you configure linux for multimonitor, but I know its > not nearly as easy as MS Windows where it just works. > > Indeed that connector is treated as an "all the time on" 2nd monitor If it is an nvidia card, you can use use the NVIDIA X Server Settings link in "Menu => System => Administration" (if you install the drivers from elrepo, which I recommend) If it is another card that uses system drivers, you can use the "Menu => System => Display" I just create 2 xorg.conf files and copy the one I need into place when I hook up to my docking station on my Dell M4500. -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 262 bytes Desc: OpenPGP digital signature URL: <http://lists.centos.org/pipermail/centos/attachments/20120802/df1f35fe/attachment-0004.sig>