diff --git a/src/efi/gummiboot.c b/src/efi/gummiboot.c
index 3ea06c6..6115791 100644
--- a/src/efi/gummiboot.c
+++ b/src/efi/gummiboot.c
@@ -370,10 +370,14 @@ static EFI_STATUS key_read(UINT64 *key) {
                 return 0;
         }
 
+Print(L"call ReadKeyStrokeEx\n", TextInputEx);
+uefi_call_wrapper(BS->Stall, 1, 3 * 1000 * 1000);
 
         err = uefi_call_wrapper(TextInputEx->ReadKeyStrokeEx, 2, TextInputEx, &keydata);
-        if (EFI_ERROR(err))
+        if (EFI_ERROR(err)) {
+                Print(L"return: %r\n", err);
                 return err;
+        }
 
         /* do not distinguish between left and right keys */
         if (keydata.KeyState.KeyShiftState & EFI_SHIFT_STATE_VALID) {
@@ -385,6 +389,9 @@ static EFI_STATUS key_read(UINT64 *key) {
 
         /* 32 bit modifier keys + 16 bit scan code + 16 bit unicode */
         *key = KEYPRESS(shift, keydata.Key.ScanCode, keydata.Key.UnicodeChar);
+
+Print(L"return key=%x-%x-%x\n", *key >> 32, (*key >> 16) & 0xffff, *key & 0xffff);
+
         return 0;
 }