diff --git a/agent/src/collectors/service.rs b/agent/src/collectors/service.rs
index df04d62..3db4982 100644
--- a/agent/src/collectors/service.rs
+++ b/agent/src/collectors/service.rs
@@ -389,8 +389,8 @@ impl ServiceCollector {
         Ok((parse(parts[0])?, parse(parts[1])?, parse(parts[2])?))
     }
 
-    async fn get_cpu_cstate_info(&self) -> Option<String> {
-        // Read C-state information to show actual sleep state distribution
+    async fn get_cpu_cstate_info(&self) -> Option<Vec<String>> {
+        // Read C-state information to show all sleep state distributions
         let mut cstate_times: Vec<(String, u64)> = Vec::new();
         let mut total_time = 0u64;
         
@@ -414,13 +414,19 @@ impl ServiceCollector {
             }
             
             if total_time > 0 && !cstate_times.is_empty() {
-                // Find the dominant C-state (highest time)
+                // Sort by time spent (highest first)
                 cstate_times.sort_by(|a, b| b.1.cmp(&a.1));
-                let dominant_state = &cstate_times[0];
-                let dominant_percent = (dominant_state.1 as f32 / total_time as f32) * 100.0;
                 
-                // Return dominant state info
-                return Some(format!("{}({:.1}%)", dominant_state.0, dominant_percent));
+                // Format all C-states with percentages
+                let mut result = Vec::new();
+                for (name, time) in cstate_times {
+                    let percent = (time as f32 / total_time as f32) * 100.0;
+                    if percent >= 0.1 { // Only show states with at least 0.1% time
+                        result.push(format!("{}: {:.1}%", name, percent));
+                    }
+                }
+                
+                return Some(result);
             }
         }
         
diff --git a/dashboard/src/data/metrics.rs b/dashboard/src/data/metrics.rs
index 52ef80b..fec7746 100644
--- a/dashboard/src/data/metrics.rs
+++ b/dashboard/src/data/metrics.rs
@@ -61,7 +61,7 @@ pub struct ServiceSummary {
     #[serde(default)]
     pub cpu_load_15: f32,
     #[serde(default)]
-    pub cpu_cstate: Option<String>,
+    pub cpu_cstate: Option<Vec<String>>,
     #[serde(default)]
     pub cpu_temp_c: Option<f32>,
     #[serde(default)]
diff --git a/dashboard/src/ui/system.rs b/dashboard/src/ui/system.rs
index b23a2a4..842d64a 100644
--- a/dashboard/src/ui/system.rs
+++ b/dashboard/src/ui/system.rs
@@ -83,14 +83,19 @@ fn render_metrics(
 
     // CPU dataset
     let cpu_status = status_level_from_color(cpu_icon_color);
-    let mut cpu_dataset = WidgetDataSet::new(vec!["CPU load".to_string(), "CPU temp".to_string(), "CPU state".to_string()], Some(WidgetStatus::new(cpu_status)));
+    let mut cpu_dataset = WidgetDataSet::new(vec!["CPU load".to_string(), "CPU temp".to_string()], Some(WidgetStatus::new(cpu_status)));
+    
+    // Get C-state descriptions
+    let cstate_descriptions = summary.cpu_cstate.as_ref()
+        .map(|states| states.clone())
+        .unwrap_or_else(|| vec!["No C-state data".to_string()]);
+    
     cpu_dataset.add_row(
         Some(WidgetStatus::new(cpu_status)),
-        vec![],
+        cstate_descriptions,
         vec![
             format!("{:.2} • {:.2} • {:.2}", summary.cpu_load_1, summary.cpu_load_5, summary.cpu_load_15),
             format_optional_metric(summary.cpu_temp_c, "°C"),
-            summary.cpu_cstate.clone().unwrap_or_else(|| "—".to_string()),
         ],
     );