# HG changeset patch # User Steve Losh # Date 1562082662 14400 # Node ID b0f9550593e3f3dfafe8d8953915284f8217191b # Parent 4a31e139ec407381d5cd846e9a88c7eeb8f0596b Update diff -r 4a31e139ec40 -r b0f9550593e3 README.markdown --- a/README.markdown Sun Jun 09 21:20:39 2019 -0400 +++ b/README.markdown Tue Jul 02 11:51:02 2019 -0400 @@ -664,3 +664,25 @@ Ended up just making my own "font" with only the characters I need for the L-systems (`+-()LR→ `). Did a bit more and got string rendering working. Still probably need to handle multiple lines, but this was a productive day. + +# July 2019 + +## 2019-07-02 + +My Linux machine has been randomly hanging completely when playing Youtube +videos in Firefox. I have to hard reboot the machine to get it back. I have no +idea how to debug this. + +Then, today, after one of these reboots the machine wouldn't even get to the +BIOS at all. Fantastic. Looking inside at the motherboard's debug screen +showed `C0`. This code isn't mentioned in the manual at all. Searching online +showed a bunch of children flailing around in forums, but there was one useful +nugget: resetting the CMOS. Apparently you're supposed to do this when you +install new RAM, and I did not. It's worked fine for months, but oh well, may +as well give it a try. The button on the x399 is just to the left of the debug +screen, and the computer needs to be completely unplugged for it to work. After +resetting the CMOS the machine took a long time to book, but did eventually POST +to the BIOS and boot normally. + +I think I want to update the BIOS at some point, but for now I'm just happy to +have the machine back and working again.