同步移动端工程、设备控制改进与发布资料

核桃派软件源代码/app/system/performance.py

@@ -224,6 +224,11 @@ class PerformanceModeManager:
             except OSError as exc:
                 self._last_error = f"could not read current governors: {exc}"
             effective_requested = self._requested if requested is None else requested
+            error = self._last_error
+            if not self._policy_paths() and error is None:
+                error = "当前内核未提供 CPU 调频策略；请检查候选内核是否回退"
+            elif self._policy_paths() and not self._restore_governors and error is None:
+                error = "无法读取 CPU 调频策略的原始值"
             effective = bool(
                 effective_requested
                 and current
@@ -235,7 +240,7 @@ class PerformanceModeManager:
                 "effective": effective,
                 "current_governors": current,
                 "restore_governors": dict(self._restore_governors),
-                "last_error": self._last_error,
+                "last_error": error,
             }