With hotplug an output is enabled but its not attached to a crtc by default. When the display is issued a resize now when we encounter a disabled crtc a unbound ouput is then attached to it.

1 files changed, 13 insertions, 3 deletions

diff --git a/src/via_driver.c b/src/via_driver.c
index 0f24ebe..b1b6e16 100644
--- a/src/via_driver.c
+++ b/src/via_driver.c
@@ -807,7 +807,7 @@ via_xf86crtc_resize(ScrnInfoPtr scrn, int width, int height)
 {
     xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
     struct buffer_object *old_front = NULL, *new_front = NULL;
-    int cpp = (scrn->bitsPerPixel + 7) >> 3, fd, i;
+    int cpp = (scrn->bitsPerPixel + 7) >> 3, fd, i, j;
     int old_width, old_height, old_dwidth, format;
     ScreenPtr screen = scrn->pScreen;
     VIAPtr pVia = VIAPTR(scrn);
@@ -859,8 +859,18 @@ via_xf86crtc_resize(ScrnInfoPtr scrn, int width, int height)
         drmmode_crtc_private_ptr drmmode_crtc;
         drmmode_ptr drmmode;
 
-        if (!xf86CrtcInUse(crtc) || !crtc->driver_private)
-            continue;
+        if (!xf86CrtcInUse(crtc)) {
+            for (j = 0; j < xf86_config->num_output; j++) {
+                xf86OutputPtr output = xf86_config->output[j];
+
+                if (!output->crtc) {
+                    output->crtc = crtc;
+                    ret = TRUE;
+                }
+            }
+            if (!ret)
+                continue;
+        }
 
         drmmode_crtc = crtc->driver_private;
         drmmode = drmmode_crtc->drmmode;