1 files changed, 8 insertions, 0 deletions
diff --git a/src/bootchart/bootchart.c b/src/bootchart/bootchart.c
index fc00b4e3f2..5683025b19 100644
--- a/src/bootchart/bootchart.c
+++ b/src/bootchart/bootchart.c
@@ -350,6 +350,14 @@ int main(int argc, char *argv[]) {
 
         log_uptime();
 
+        if (graph_start < 0.0) {
+                fprintf(stderr,
+                        "Failed to setup graph start time.\n\nThe system uptime "
+                        "probably includes time that the system was suspended. "
+                        "Use --rel to bypass this issue.\n");
+                exit (EXIT_FAILURE);
+        }
+
         has_procfs = access("/proc/vmstat", F_OK) == 0;
 
         LIST_HEAD_INIT(head);