could not find referred resolution

[Jomy10]

$ ./drm-framebuffer -d /dev/dri/by-path/platform-gpu-card -c HMDI-A-1
Could not find preferred resolution

when I use -r:

$ ./drm-framebuffer -d /dev/dri/by-path/platform-gpu-card -c HMDI-A-1 -r
1280x720

[eichenberger]

Hi @Jomy10 I had a look at it and there is a bug in there. Currently the display has to announce it has a default resolution if it does not then "-r" option just shows the last resolution it found while the the filling will abort. For you maybe the following patch would work:

diff --git a/framebuffer.c b/framebuffer.c
index 260ebfa..389f611 100644
--- a/framebuffer.c
+++ b/framebuffer.c
@@ -116,10 +116,9 @@ int get_framebuffer(const char *dri_device, const char *connector_name, struct f
     /* Get the preferred resolution */
     drmModeModeInfoPtr resolution = 0;
     for (int i = 0; i < connector->count_modes; i++) {
-            drmModeModeInfoPtr res = 0;
-            res = &connector->modes[i];
-            if (res->type & DRM_MODE_TYPE_PREFERRED)
-                    resolution = res;
+            resolution = &connector->modes[i];
+            if (resolution->type & DRM_MODE_TYPE_PREFERRED)
+                break;
     }

     if (!resolution) {

But I think I need to cleanup that stuff and make it possible to select a specific resolution

[eichenberger]

Commit https://github.com/embear-engineering/drm-framebuffer/commit/77fc4b5571e04160b348843bcedf8939c1e6d529 should solve this issue by using the first possible resolution when no resolution is specified.

[Jomy10]

Commit 77fc4b5 should solve this issue by using the first possible resolution when no resolution is specified.

Awesome!