On 1/9/2012 10:59 AM, Mark Wendt wrote: > On 01/09/2012 10:52 AM, Kent A. Reed wrote: >> On 1/9/2012 9:57 AM, Les Newell wrote: >> >>> Some kernel mode display drivers can make X fail to start if they don't >>> find a monitor. See this page >>> <https://wiki.ubuntu.com/X/KernelModeSetting> so see how to turn off KMS >>> for your driver. You will have to create an xorg.conf to manually >>> specify the driver and monitor. >>> >>> I had to do this for my headless network server. >>> >>> Les >>> >>> >> Les: >> >> Maybe I'm just being thick this morning, but why would I want to start >> an X11-server on a machine lacking a monitor? >> >> Regards, >> Kent >> > You need to have some flavor of X if you want to display Axis on the > remote machine. If you're not running EMC2 and/or don't need Axis, then > obviously you don't need it. I was assuming you wanted to start up > EMC2, and run Axis on a remote machine. > > Mark > Mark:
I think I'm beginning to understand why we seem to be talking past one another. "You need to have some flavor of X" is certainly true, but this statement is satisfied in two parts. There have to be functions built into or linked from an X11-client, in this case AXIS, that allow it to call on the X11 services it needs and there has to be an X11-server running somewhere to provide the services called for. Yes, I have an X11-server running, just not in the headless machine, that is, the machine running AXIS and EMC2 and connected to my CNC drives. The X11-server is running on a remote machine with attached keyboard, mouse, and display (this isn't the only possibility, of course). Yes, I could instead run AXIS on the remote machine, but it would be only a coincidence and not a requirement that the X11-server is running on it too. I could also choose an EMC2 interface that does not require X11 at all. Example: Just at the moment, I have a developmental arrangement on my desk with a headless Ubuntu box controlling a simulated mill in real-time EMC2 and AXIS with no Gnome or X11 processes running. I'm communicating with it via an X11-server running in a virtual Ubuntu host running in VirtualBox on a real Windows 7 host. Don't ask me why. Bottom line: many EMC2 tools and interfaces require X11-services (hence, the need for some flavor of X) but there's no requirement that an X11-server be running locally, only that appropriate X11 libraries be present if dynamic linking is involved. Regards, Kent ------------------------------------------------------------------------------ Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
