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-rw-r--r--src/utils.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/src/utils.c b/src/utils.c
index bee57f3..0c57a4f 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -4,6 +4,8 @@
#include <string.h>
#include <stdio.h>
#include <unistd.h>
+#include <xf86drmMode.h>
+#include <fcntl.h>
double clock_get_monotonic_seconds(void) {
struct timespec ts;
@@ -109,7 +111,19 @@ bool gl_get_gpu_info(Display *dpy, gsr_gpu_info *info) {
bool gsr_get_valid_card_path(char *output) {
for(int i = 0; i < 10; ++i) {
sprintf(output, "/dev/dri/card%d", i);
- if(access(output, F_OK) == 0)
+ int fd = open(output, O_RDONLY);
+ if(fd == -1)
+ continue;
+
+ bool is_display_card = false;
+ drmModeResPtr resources = drmModeGetResources(fd);
+ if(resources) {
+ is_display_card = true;
+ drmModeFreeResources(resources);
+ }
+ close(fd);
+
+ if(is_display_card)
return true;
}
return false;