On Wed, Nov 13, 2019 at 11:59 AM Böszörményi Zoltán <zboszor@xxxxx> wrote: > > 2019. 11. 12. 17:41 keltezéssel, Ilia Mirkin írta: > > On Tue, Nov 12, 2019 at 9:23 AM Böszörményi Zoltán <zboszor@xxxxx> wrote: > >> But no, all GPU devices (now only one, the UDL device) have screen 0 > >> (a.k.a. DISPLAY=:0.0) set when AutoBindGPU is true: > >> > >> [ 2444.576] xf86AutoConfigOutputDevices: xf86NumScreens 2 xf86NumGPUScreens 1 > >> [ 2444.576] xf86AutoConfigOutputDevices: GPU #0 driver 'modesetting' 'modeset' scrnIndex > >> 256 origIndex 257 pScreen->myNum 256 confScreen->screennum 0 > >> confScreen->device->identifier 'Intel0' > >> confScreen->device->screen 0 confScreen->device->myScreenSection->screennum 0 > >> confScreen->device->myScreenSection->device->screen 0 > >> > >> Somehow, Option "Device" should ensure that the UDL device is actually > >> treated as a framebuffer that can be rendered into (i.e. to be modeset(2) > >> instead of modeset(Gn)) and it should be woken up automatically. > >> > >> This is what AutoBindGPU is supposed to do, isn't it? > >> > >> But instead of assigning to screen 0, it should be assigned to whatever > >> screen number it is configured as. > >> > >> I know it's not a common use case nowadays, but I really want separate > >> fullscreen apps on their independent screens, including a standalone UDL > >> device, instead of having the latters as a Xinerama extension to some > >> other device. > > > > If you see a "G", that means it's being treated as a GPU device, which > > is *not* what you want if you want separate screens. You need to try > > to convince things to *not* set the devices up as GPU devices, but > > instead put each device (and each one of its heads, via ZaphodHeads) > > no a separate device, which in turn will have a separate screen. > > I created a merge request that finally made it possible what I wanted. > > https://gitlab.freedesktop.org/xorg/xserver/merge_requests/334 > > Now, no matter if I use the intel or modesetting drivers for the > Device sections using the Intel heads, or AutoBindGPU set to true or > false, the UDL device is correctly matched with its Option "kmsdev" > setting to the plaform device's device path. > > This patch seems to be a slight layering violation, but since the > modesetting driver is built into the Xorg server sources, the patch > may get away with it. Have you looked at setting AutoAddGPU to false? AutoBindGPU is too late -- that's when you already have a GPU, whether to bind it to the primary device (/screen/whatever). You need to not have a GPU in the first place. -ilia _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
