diff --git a/src/libsystemd/sd-device/device-monitor.c b/src/libsystemd/sd-device/device-monitor.c
index b485e3e2b6..2cb35951de 100644
--- a/src/libsystemd/sd-device/device-monitor.c
+++ b/src/libsystemd/sd-device/device-monitor.c
@@ -178,7 +178,7 @@ int device_monitor_new_full(sd_device_monitor **ret, MonitorNetlinkGroup group,
 
                 netns = ioctl(m->sock, SIOCGSKNS);
                 if (netns < 0)
-                        log_debug_errno(errno, "sd-device-monitor: Unable to get network namespace of udev netlink socket, unable to determine if we are in host netns: %m");
+                        log_debug_errno(errno, "sd-device-monitor: Unable to get network namespace of udev netlink socket, unable to determine if we are in host netns, ignoring: %m");
                 else {
                         struct stat a, b;
 
@@ -191,9 +191,9 @@ int device_monitor_new_full(sd_device_monitor **ret, MonitorNetlinkGroup group,
                                 if (ERRNO_IS_PRIVILEGE(errno))
                                         /* If we can't access PID1's netns info due to permissions, it's fine, this is a
                                          * safety check only after all. */
-                                        log_debug_errno(errno, "sd-device-monitor: No permission to stat PID1's netns, unable to determine if we are in host netns: %m");
+                                        log_debug_errno(errno, "sd-device-monitor: No permission to stat PID1's netns, unable to determine if we are in host netns, ignoring: %m");
                                 else
-                                        log_debug_errno(errno, "sd-device-monitor: Failed to stat PID1's netns: %m");
+                                        log_debug_errno(errno, "sd-device-monitor: Failed to stat PID1's netns, ignoring: %m");
 
                         } else if (a.st_dev != b.st_dev || a.st_ino != b.st_ino)
                                 log_debug("sd-device-monitor: Netlink socket we listen on is not from host netns, we won't see device events.");
diff --git a/test/units/testsuite-17.03.sh b/test/units/testsuite-17.03.sh
index 93cbf146a1..16ae62b46b 100755
--- a/test/units/testsuite-17.03.sh
+++ b/test/units/testsuite-17.03.sh
@@ -28,7 +28,7 @@ teardown() {
 run_test() {
     since="$(date +%T)"
 
-    udevadm trigger -w --action add /dev/null
+    SYSTEMD_LOG_LEVEL=debug udevadm trigger --verbose --settle --action add /dev/null
 
     for _ in {1..20}; do
         if coredumpctl --since "$since" --no-legend --no-pager | grep /bin/udevadm ; then
diff --git a/test/units/testsuite-17.04.sh b/test/units/testsuite-17.04.sh
index be386ccf61..bb4777f25e 100755
--- a/test/units/testsuite-17.04.sh
+++ b/test/units/testsuite-17.04.sh
@@ -15,7 +15,7 @@ ACTION=="change", SUBSYSTEM=="mem", KERNEL=="null", TAG+="changed"
 EOF
 
 udevadm control --reload
-udevadm trigger --settle --action add /dev/null
+SYSTEMD_LOG_LEVEL=debug udevadm trigger --verbose --settle --action add /dev/null
 
 test -f /run/udev/tags/added/c1:3
 test ! -f /run/udev/tags/changed/c1:3
@@ -24,7 +24,7 @@ udevadm info /dev/null | grep -q 'E: CURRENT_TAGS=.*:added:.*'
 udevadm info /dev/null | grep -q 'E: TAGS=.*:changed:.*' && { echo 'unexpected TAGS='; exit 1; }
 udevadm info /dev/null | grep -q 'E: CURRENT_TAGS=.*:changed:.*' && { echo 'unexpected CURRENT_TAGS='; exit 1; }
 
-udevadm trigger --settle --action change /dev/null
+SYSTEMD_LOG_LEVEL=debug udevadm trigger --verbose --settle --action change /dev/null
 
 test -f /run/udev/tags/added/c1:3
 test -f /run/udev/tags/changed/c1:3
@@ -33,7 +33,7 @@ udevadm info /dev/null | grep -q 'E: CURRENT_TAGS=.*:added:.*' && { echo 'unexpe
 udevadm info /dev/null | grep -q 'E: TAGS=.*:changed:.*'
 udevadm info /dev/null | grep -q 'E: CURRENT_TAGS=.*:changed:.*'
 
-udevadm trigger --settle --action add /dev/null
+SYSTEMD_LOG_LEVEL=debug udevadm trigger --verbose --settle --action add /dev/null
 
 test -f /run/udev/tags/added/c1:3
 test -f /run/udev/tags/changed/c1:3
diff --git a/test/units/testsuite-17.05.sh b/test/units/testsuite-17.05.sh
index 4bfc09a7cf..a6e5b3325e 100755
--- a/test/units/testsuite-17.05.sh
+++ b/test/units/testsuite-17.05.sh
@@ -10,7 +10,7 @@ ACTION=="add", SUBSYSTEM=="mem", KERNEL=="null", IMPORT{program}="/bin/echo -e H
 EOF
 
 udevadm control --reload
-udevadm trigger --settle --action add /dev/null
+SYSTEMD_LOG_LEVEL=debug udevadm trigger --verbose --settle --action add /dev/null
 
 test -f /run/udev/data/c1:3
 udevadm info /dev/null | grep -q 'E: HOGE=aa\\x20\\x20\\x20bb'