On Sun, 22 Jan 2012 12:18:17 -0800 Mark Knecht <markkne...@gmail.com> wrote:
> On Sun, Jan 22, 2012 at 12:07 PM, Michael Mol <mike...@gmail.com> > wrote: > > On Sun, Jan 22, 2012 at 2:30 PM, Mark Knecht <markkne...@gmail.com> > > wrote: > <SNIP> > >> > >> Also, thanks for the pointer to xvidtune. Interesting little app. > >> QUESTION: Do you know how to get the data for each monitor/video > >> card combo? So far I haven't figured out how to tell it Screen2. > >> Seems to only give me Screen0 as best I can tell. > >> > >> I'm a bit nervous to just start trying things. > > > > If you're not using Xinerama, you can specify screens by changing > > $DISPLAY. e.g. :0.0 is screen 0, :0.1 is screen 1, :0.2 is screen > > 2... > > > > I am using xinerama. 3 monitors across 2 NVidia adpaters. Same on my > friends system. > > One interesting thing about this configuration. On his machine he uses > two identical 8400GS adapters. He can run glxgears and is able to move > the gears to any screen and see the gears. He can also use the KDE > features to look at all desktops and application using (Ctrl-F8 I > think) or by dragging his mouse to the upper left corner. > > On my setup I use a GTX465 for screen 0 & 1 but have an NVidia 8400GS > for screen 2. On this system I only see the gears on screen 0 & 1. On > screen 2 I see just a black box and the FPS count skyrockets as the > CPU/GPU aren't really doing anything so it goes through the loop very > fast. Also, on this system the Ctrl-F8 thing mouse to the upper left > corner don't work at all. > > I've assumed that's because I'm using two different NVidia cards. > > - Mark > The docs for the nVidia driver go into this in quite some detail, and it's related to how the nVidia hardware is built plus how the nVidia software works plus how Xinerama works. Basically, not all combinations are supported, especially when you have different "screens" (that's the nVidia concept of a screen, not the X concept) with different resolutions on different GPUs. Or something like that, but I don;t have the docs to have anymore since my last 8600M went to visit the silicon daddy in the sky -- Alan McKinnnon alan.mckin...@gmail.com
