diff --git a/audio/aidl/default/usb/StreamUsb.cpp b/audio/aidl/default/usb/StreamUsb.cpp
index fbfe0f1..5d1d7fe 100644
--- a/audio/aidl/default/usb/StreamUsb.cpp
+++ b/audio/aidl/default/usb/StreamUsb.cpp
@@ -107,10 +107,13 @@
 ::android::status_t DriverUsb::transfer(void* buffer, size_t frameCount, size_t* actualFrameCount,
                                         int32_t* latencyMs) {
     if (!mConfig.has_value() || mConnectedDevices.empty()) {
+        LOG(ERROR) << __func__ << ": failed, has config: " << mConfig.has_value()
+                   << ", has connected devices: " << mConnectedDevices.empty();
         return ::android::NO_INIT;
     }
     if (mIsStandby) {
         if (::android::status_t status = exitStandby(); status != ::android::OK) {
+            LOG(ERROR) << __func__ << ": failed to exit standby, status=" << status;
             return status;
         }
     }
@@ -151,6 +154,7 @@
     std::vector<std::shared_ptr<alsa_device_proxy>> alsaDeviceProxies;
     for (const auto& device : connectedDevices) {
         alsa_device_profile profile;
+        profile_init(&profile, mIsInput ? PCM_IN : PCM_OUT);
         profile.card = device.get<AudioDeviceAddress::alsa>()[0];
         profile.device = device.get<AudioDeviceAddress::alsa>()[1];
         if (!profile_read_device_info(&profile)) {
@@ -174,6 +178,11 @@
                        << " error=" << err;
             return ::android::UNKNOWN_ERROR;
         }
+        if (int err = proxy_open(proxy.get()); err != 0) {
+            LOG(ERROR) << __func__ << ": failed to open device, address=" << device.toString()
+                       << " error=" << err;
+            return ::android::UNKNOWN_ERROR;
+        }
         alsaDeviceProxies.push_back(std::move(proxy));
     }
     {