diff -Nru adios4dolfinx-0.7.3/debian/changelog adios4dolfinx-0.7.3/debian/changelog
--- adios4dolfinx-0.7.3/debian/changelog	2024-02-27 00:13:48.000000000 +0000
+++ adios4dolfinx-0.7.3/debian/changelog	2024-02-27 16:53:51.000000000 +0000
@@ -1,3 +1,9 @@
+adios4dolfinx (0.7.3-7) unstable; urgency=medium
+
+  * debian/tests: skip all tests on big-endian systems (s390x, etc)
+
+ -- Drew Parsons <dparsons@debian.org>  Tue, 27 Feb 2024 17:53:51 +0100
+
 adios4dolfinx (0.7.3-6) unstable; urgency=medium
 
   * big-endian (s390x): skip test_mesh_read_write
diff -Nru adios4dolfinx-0.7.3/debian/tests/test-adios4dolfinx adios4dolfinx-0.7.3/debian/tests/test-adios4dolfinx
--- adios4dolfinx-0.7.3/debian/tests/test-adios4dolfinx	2024-02-27 00:13:48.000000000 +0000
+++ adios4dolfinx-0.7.3/debian/tests/test-adios4dolfinx	2024-02-27 16:53:51.000000000 +0000
@@ -1,22 +1,15 @@
 #!/bin/bash
 set -e
 
+# s390x segfaults in all known tests. Something is amiss.
+# Adios2 upstream acknowledges big-endian support is not tested.
+# (some adios2 and dolfinx VTX tests fail, some pass)
+# Assume all big-endian systems will fail adios4dolfinx and skip them all.
 DEB_HOST_ARCH_ENDIAN=$(dpkg-architecture -qDEB_HOST_ARCH_ENDIAN)
-
-# big-endian systems such as s390x are expected to fail.
-# Run their tests anyway to check status, but ignore the failure
 if [ "x${DEB_HOST_ARCH_ENDIAN}" = "xbig" ]; then
-  # s390x segfaults in test_checkpointing.py:
-  #  File "src/tests/test_utils.py", line 36 in write_function
-  #  File "src/tests/test_checkpointing.py", line 58 in test_read_write_P_2D
-  TEST_SELECTION="not (test_read_write or test_mesh_read_write)"
-  errstream=/dev/stdout
-  ignore_error=true
+  echo "Adios2 support is not tested on big-endian systems."
 else
-  errstream=/dev/stderr
-  ignore_error=false
+  for pyver in `py3versions -sv`; do
+    ${MPIEXEC} python$pyver -m pytest -k "${TEST_SELECTION}" tests
+  done
 fi
-
-for pyver in `py3versions -sv`; do
-  ${MPIEXEC} python$pyver -m pytest -k "${TEST_SELECTION}" tests 2>$errstream || ${ignore_error}
-done