**** BEGIN LOGGING AT Sat Jan 20 03:00:01 2018
Jan 20 12:33:26 <renl> anyone noticed for ubuntu on arm computers, attempting to read from 2 ttyACM devices will hang the system and create a kernel panic?
Jan 20 12:33:53 <renl> basically it will overwhelm the cpu with software interrupts
Jan 20 12:36:56 <renl> in this case the computer is an asus tinker board
Jan 20 12:38:01 <renl> i tried the Armbian ubuntu which is on kernel version 4.13.16 and the ubuntu image from elar system on kernel version 4.4.71 both has this issue
Jan 20 12:38:28 <renl> when i tried using debian stretch on kernel 4.4.71 for the board it does not have this problem
Jan 20 12:38:45 <renl> appears to be a problem only on ubuntu
Jan 20 12:58:50 <y0sh> renl: how do you like your tinkerboard
Jan 20 13:01:17 <renl> in general?
Jan 20 13:01:27 <y0sh> yes
Jan 20 13:01:37 <renl> its pretty ok, i am trying to run ROS on it
Jan 20 13:02:03 <renl> lots of cpu power for my purposes so its good
Jan 20 13:02:25 <renl> but im now stumped on what to me appears to be some driver bugs? on cdc_acm or something
Jan 20 13:02:55 <renl> ttyUSB is ok, ttyACM kills the os
Jan 20 13:03:35 <y0sh> yes i am running the tinkeros seams to be ok. I havent done anything but get it running and now it just sits would like a better os for it
Jan 20 13:04:02 <renl> tinkeros does not have that ttyACM issue
Jan 20 13:05:51 <renl> too bad ROS doesnt have support for debian on armhf :(
Jan 20 13:06:44 <y0sh> maybe one day it will have a better selection of os's to choose from like the rpi
Jan 20 13:07:20 <renl> i wonder if rpi has this issue of hanging the system when reading multiple ttyACMs
Jan 20 13:07:46 <y0sh> not sure havent tried
**** ENDING LOGGING AT Sun Jan 21 03:00:02 2018