diff --git a/ramdisk/init.tart.rc b/ramdisk/init.tart.rc
index ccd61b7..51551e9 100644
--- a/ramdisk/init.tart.rc
+++ b/ramdisk/init.tart.rc
@@ -21,5 +21,19 @@ on boot
     chmod 0666 /sys/devices/system/cpu/cpu7/cpufreq/scaling_governor
     chmod 0666 /sys/devices/system/cpu/cpufreq/boost
 
+# Bring-up debugging: mirror the Android log onto the serial console so
+# graphics/HAL failures are visible without adb or a working serial shell.
+# Remove once the port is stable.
+service logcat_serial /system/bin/logcat -b main,system,crash -v threadtime
+    class late_start
+    console
+    user shell
+    group shell log readproc
+    disabled
+    seclabel u:r:shell:s0
+
+on post-fs-data
+    start logcat_serial
+
     
 
diff --git a/vendor.prop b/vendor.prop
index d6842bd..4636678 100644
--- a/vendor.prop
+++ b/vendor.prop
@@ -97,4 +97,9 @@ ro.hardware.egl=angle
 ro.hardware.vulkan=pastel
 ro.opengles.version=196608
 
+# Bring-up debugging: persist full logcat to /data/misc/logd so failed boots
+# can be analyzed offline from the SD card. Remove once the port is stable.
+persist.logd.logpersistd=logcatd
+persist.logd.logpersistd.enable=true
+