我发现用6.18.30内核没有问题。用6.18.34内核不行。不知道为什么。

用命令运行下控制中心看看有没有报错：dde-control-center --show

显示信息如下：

setHighDpiScaleFactorRoundingPolicy must be called before creating the QGuiApplication instance
dde-control-center is already running, pid: 5920