Differences

This shows you the differences between two versions of the page.

--- haas:status [2018/03/15 08:52] – [March 6th, 2018] wedge
+++ haas:status [2019/11/19 14:48] – [pi4b dual head issues] wedge
@@ Line 81: / Line 81: @@
     * http://www.askapache.com/linux/rxvt-xresources.html
 ======Other Days======
+======November 19th, 2019======
+=====pi4b dual head issues=====
+Attempting to set up a fresh raspbian install on the pi4b. Strangely, getting issues with dual head: it is only coming up in mirrored mode (or when I play with it, not at all).
+The only major variables that have changed:
+  * new raspbian release (I could test my old setup.. that is easy enough to verify)
+  * no longer using HDMI monitors, but the DVI connections on the LAIR monitors.
+    * further investigation suggests the pi may be seeing identical EDIDs and other monitor ID things, so it is defaulting to a mirroring mode.
+    * **tvservice -l** consistently identifies two displays, so the hardware sees it, the software is not.
+Interestingly: my old raspbian setup IS working properly. So what is different between the two?
 ======March 15th, 2018======
 Setting up the raspberry pi 3 for use in the comporg class. Named it **pi3b**, and will get the IP of 10.80.2.48; running the latest stable release of rasbian.