diff --git a/bioauth/src/loginoptionswidget.cpp b/bioauth/src/loginoptionswidget.cpp
index 6f55dba..955270c 100644
--- a/bioauth/src/loginoptionswidget.cpp
+++ b/bioauth/src/loginoptionswidget.cpp
@@ -188,7 +188,10 @@ unsigned LoginOptionsWidget::getLoginOptCount()
 DeviceInfoPtr LoginOptionsWidget::getFirstDevInfo()
 {
     DeviceInfoPtr devInfo = nullptr;
-    int nDrvId = m_bioDevices->GetLastDevice(getpwuid(getuid())->pw_name);
+    struct passwd* pwdInfo = getpwuid(m_uid);
+    if (!pwdInfo)
+        return devInfo;
+    int nDrvId = m_bioDevices->GetLastDevice(pwdInfo->pw_name);
     if (nDrvId >= 0) {
         qDebug()<<"GetLastDevice:"<<nDrvId;
         DeviceMap::iterator itDevInfo = m_mapDevices.begin();
@@ -443,11 +446,16 @@ void LoginOptionsWidget::startAuth(DeviceInfoPtr device, int uid)
     qDebug()<<"deviceInfo:"<<device->device_id;
     this->m_curDevInfo = device;
     this->m_uid = uid;
-    this->m_strUserName = getpwuid(uid)->pw_name;
+    struct passwd *pwdInfo = getpwuid(uid);
+    if (pwdInfo) {
+        this->m_strUserName = pwdInfo->pw_name;
+    }
     this->m_isStopped = false;
     this->m_curLoginOptType = convertDeviceType(this->m_curDevInfo->biotype);
     updateUIStatus(true);
-    m_bioDevices->SetLastDevice(getpwuid(getuid())->pw_name, this->m_curDevInfo->device_id);
+    if (pwdInfo) {
+        m_bioDevices->SetLastDevice(pwdInfo->pw_name, this->m_curDevInfo->device_id);
+    }
     startAuth_();
 }
 
diff --git a/polkit-agent/src/mainwindow.cpp b/polkit-agent/src/mainwindow.cpp
index d11e08b..e8b66c1 100644
--- a/polkit-agent/src/mainwindow.cpp
+++ b/polkit-agent/src/mainwindow.cpp
@@ -330,7 +330,7 @@ void MainWindow::onConfigurationChanged(QString key)
 
 void MainWindow::restart_bio_identify()
 {
-    DeviceInfoPtr device = bioDevices.getDefaultDevice(getuid());
+    DeviceInfoPtr device = bioDevices.getDefaultDevice(getUid(userName));
     if(device){
         m_loginOptsWidget->startAuth(device, getUid(userName));
         setMessage(tr("Please enter your password or enroll your fingerprint "));
@@ -902,7 +902,7 @@ void MainWindow::switchAuthMode(Mode mode)
 
 
         // if(enableBioAuth && useDoubleAuth){
-        //     DeviceInfoPtr device = bioDevices.getDefaultDevice(getuid());
+        //     DeviceInfoPtr device = bioDevices.getDefaultDevice(getUid(userName));
         //     if(device){
         //         widgetBioAuth->startAuth(getUid(userName), device);
         //     }
@@ -933,9 +933,9 @@ void MainWindow::switchAuthMode(Mode mode)
         } else if(authMode == BIOMETRIC) {
 	    QString strDeviceName;
 	    if(isLoadingUkey){
-	        strDeviceName = m_loginOptsWidget->GetDefaultDevice(getuid(),UniT_General_Ukey); 
+            strDeviceName = m_loginOptsWidget->GetDefaultDevice(uid, UniT_General_Ukey);
 	    }else{
-                strDeviceName = m_loginOptsWidget->GetDefaultDevice(getuid());
+            strDeviceName = m_loginOptsWidget->GetDefaultDevice(uid);
 	    }
 	    //如果默认设备为空的话，第一次不启动生物识别认证
             if(strDeviceName.isEmpty() && !m_deviceInfo)
@@ -989,7 +989,7 @@ void MainWindow::switchAuthMode(Mode mode)
 
             if(enableBioAuth) {
                 qDebug() << "enable biometric authenticaion";
-                QString strDeviceName = m_loginOptsWidget->GetDefaultDevice(getuid());
+                QString strDeviceName = m_loginOptsWidget->GetDefaultDevice(uid);
                 //如果默认设备为空的话，第一次不启动生物识别认证
                 if(strDeviceName.isEmpty() && !m_deviceInfo)
                 {