>> On Fri, Mar 21, 2014 at 3:30 PM, Ivan Drobyshevskyi wrote: >>> Is there a way to make X treat Linux framebuffer device (e.g. /dev/fb0 >>> backed by virtual framebuffer) as a real display? Ideally it should >>> appear in system display settings as a configurable monitor. Does it >>> require writing some kernel code or it's possible to somehow get away >>> with for example X configuration? >> >> If I understand your question correctly, you are asking for the xorg >> fbdev driver: >> http://www.x.org/releases/current/doc/man/man4/fbdev.4.xhtml > > Thank you, that could work. As I understand, using fbdev doesn't > support hotplug and the only way to setup it is via xorg.conf editing? > > (in short, I need to create a virtual GPU that is treated as a real > one by desktop environment but instead of actual rendering only > writing to framebuffer in RAM is required). Does it have to be a linux-fbdev driver? There are virtual xorg drivers (xf86-video-dummy?) or servers (Xfvb) that you can use like this, all in user-space. Or you create a DRM driver (à la the experimental SimpleDRM driver from dri-devel@xxxxxxxxxxxxxxxxxxxxx) and use the xorg xf86-modesetting driver on top of it. However I don't know if these examples support the kind of hotplug you want in their current status. Tormod -- To unsubscribe from this list: send the line "unsubscribe linux-fbdev" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
