# HG changeset patch
# User Steve Losh <steve@stevelosh.com>
# Date 1555269187 14400
# Node ID e9f97ef08600af096039070282e8df026f0e83d2
# Parent  fc107a9627c55e3ace69581a6e37942e7573c9a1
Update

diff -r fc107a9627c5 -r e9f97ef08600 README.markdown
--- a/README.markdown	Sat Apr 13 11:11:51 2019 -0400
+++ b/README.markdown	Sun Apr 14 15:13:07 2019 -0400
@@ -413,3 +413,19 @@
 documented.  I tried debugging the display corruption with the info from the
 email Luther sent (getting a bunch of text on the screen and pressing the Auto
 button) but that didn't seem to help.  Emailed back.
+
+## 2019-04-14
+
+More troubleshooting of the Lisp machine video issues.  Borrowed a miniDP/VGA
+dongle and TV with a VGA input (apparently they still exist) from a friend, and
+got a new VGA cable.  The results are very confusing:
+
+* Cable makes no different in any scenario.
+* WORKS: Macbook miniDP to dongle to Elecrow VGA
+* WORKS: Thinkpad miniDP to dongle to Elecrow VGA
+* WORKS: Lisp Machine VGA to TV VGA
+* BORKED: Lisp Machine VGA to Elecrow VGA
+
+Emailed the author back with my results.  This is really strange… I would have
+expected either the monitor or the Lisp Machine were the problem, but they only
+seem to not work *together*.