> Frank (and Gary): > > I like the basic idea of this monitor, although for another, non real-time > project, so I thought I'd read up on DisplayLink. > > There is an open-source activity called freedesktop.org which apparently is > working on the displaylink interface to Linux. > > Quoting from libdlo.freedesktop.org/wiki: > > "A fully open source (GPL) driver which supports all DisplayLink devices to > date (all DL1xx devices) is in the mainline of the Linux 2.6.38 kernel, and can > be compiled as a module for certain older kernels. It is called udlfb. > > "It's still very much under development, but it's possible to write custom > applications to it today (or to libdlo user mode library itself, bypassing udlfb). > And it's also possible to configure X and standard X applications to run on > udlfb -- but that part is still very distro dependent today. Most people in the > DisplayLink community running X are on an older version of Ubuntu (9.04), > and some on certain versions of RedHat. Savvy people would be able to get > other distros running, but it can be a slog." > > The rest of the page contains links to different activities and reported > successes. > > Bottom line for me is, this USB monitor looks interesting but the road to > success may be a rocky one. Maybe someone with some loose change or a > driving need will get one working and report about it on our wiki.
I've taken that driver and started building my own "usb monitor", using a small 400x240 rgb display. The plan is to have a second instance of Axis, or some other UI, running on it. My first version (http://www.franksworkshop.com.au/CNC/LathePendant/LathePendant.htm) was a simple interface that supported basic commands like fill, line and text. That was OK, but I had to write the whole menu system for it. The usb version supports that interface, but also, via udlfb, it implements a framebuffer display device, which, as you said, can also run X11. I just got it running at full speed the other night. Here's a video of X11 on a 400x240 screen running glxgears, and emc. You can't really see emc - I haven't enabled the X11 virtual screen size. The video quality isn't great - it is quite responsive. https://www.youtube.com/watch?v=sQFcCKVpcP8 ------------------------------------------------------------------------------ Systems Optimization Self Assessment Improve efficiency and utilization of IT resources. Drive out cost and improve service delivery. Take 5 minutes to use this Systems Optimization Self Assessment. http://www.accelacomm.com/jaw/sdnl/114/51450054/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
