diff --git a/tests/integration/defs/accuracy/test_disaggregated_serving.py b/tests/integration/defs/accuracy/test_disaggregated_serving.py
index 505683dcc222..6272fad9494e 100644
--- a/tests/integration/defs/accuracy/test_disaggregated_serving.py
+++ b/tests/integration/defs/accuracy/test_disaggregated_serving.py
@@ -2269,9 +2269,12 @@ def test_auto_dtype(self):
                 "num_instances": 1
             },
         }
+        # V4-Flash 148GB weight prefetch + warmup needs >35 min, default wait timeout times out.
         with launch_disaggregated_llm(disaggregated_server_config,
-                                      ctx_server_config, gen_server_config,
-                                      self.MODEL_PATH) as llm:
+                                      ctx_server_config,
+                                      gen_server_config,
+                                      self.MODEL_PATH,
+                                      server_waiting_timeout=3600) as llm:
             task = MMLU(self.MODEL_NAME)
             task.evaluate(llm, is_integration_test=True)
 
@@ -2330,8 +2333,11 @@ def test_auto_dtype(self):
                 "num_instances": 1
             },
         }
+        # Same long-init reason as TestDeepSeekV4Flash above.
         with launch_disaggregated_llm(disaggregated_server_config,
-                                      ctx_server_config, gen_server_config,
-                                      self.MODEL_PATH) as llm:
+                                      ctx_server_config,
+                                      gen_server_config,
+                                      self.MODEL_PATH,
+                                      server_waiting_timeout=3600) as llm:
             task = MMLU(self.MODEL_NAME)
             task.evaluate(llm, is_integration_test=True)
diff --git a/tests/integration/test_lists/waives.txt b/tests/integration/test_lists/waives.txt
index f53af6b823f1..e38aa988a437 100644
--- a/tests/integration/test_lists/waives.txt
+++ b/tests/integration/test_lists/waives.txt
@@ -430,4 +430,3 @@ disaggregated/test_disaggregated.py::test_disaggregated_gpt_oss_120b_harmony[gpt
 accuracy/test_llm_api_pytorch.py::TestGPTOSS::test_w4_4gpus[v2_kv_cache-dp4-cutlass-auto] SKIP (https://nvbugs/5596343)
 unittest/_torch/speculative/test_eagle3.py::test_llama_eagle3_dynamic_tree[True-False] SKIP (https://nvbugs/6113021)
 accuracy/test_llm_api_pytorch.py::TestDeepSeekV4Flash::test_nvfp4_4gpus_static_eplb[moe_backend=TRTLLM] SKIP (worker init CUDA error masked by kv_cache_manager_v2/_exceptions.py:49 cuGetErrorString type bug; real failure unreadable until that wrapper is fixed)
-accuracy/test_disaggregated_serving.py::TestDeepSeekV4Flash::test_auto_dtype SKIP (https://nvbugs/6166283)