On mer., 2016-04-06 at 13:13 +0200, Yves-Alexis Perez wrote: > On mer., 2016-04-06 at 04:04 -0700, Erik Haller wrote: > > > > I have never seen xrandr use monitor0|1. I am running lightdm. > That just means xfdesktop4 didn't get a monitor name. It gets a name > from gdk_screen_get_monitor_plug_name() [1,2] which in turns gets it from > X11 > [3] using XRRGetCrtcInfo(). So my guess is that this behavior changed after > the xorg update. > Actually the name comes from XRRGetOutputInfo(), not XRRGetCrtcInfo() but the point still stands. Can you check with the attached program and report back the monitor names with both xorg versions? Regards, -- Yves-Alexis
#include <stdio.h>
#include <stdlib.h>
#include <X11/Xlib.h>
#include <X11/extensions/Xrandr.h>
/* build with gcc -W monitor.c -o monitor -lXrandr -lX11 */
int main(void) {
Display *display = XOpenDisplay(getenv("DISPLAY"));
Window window = DefaultRootWindow(display);
XRRScreenResources *resources = XRRGetScreenResources(display, window);
for (int i = 0; i < resources->ncrtc; ++i) {
XRROutputInfo *output = XRRGetOutputInfo (display, resources, resources->outputs[i]);
printf("monitor %d name: %s\n", i, output->name);
XRRFreeOutputInfo(output);
}
XRRFreeScreenResources(resources);
return 0;
}
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