[12:33] anyone noticed for ubuntu on arm computers, attempting to read from 2 ttyACM devices will hang the system and create a kernel panic? [12:33] basically it will overwhelm the cpu with software interrupts [12:36] in this case the computer is an asus tinker board [12:38] 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 [12:38] when i tried using debian stretch on kernel 4.4.71 for the board it does not have this problem [12:38] appears to be a problem only on ubuntu [12:58] renl: how do you like your tinkerboard [13:01] in general? [13:01] yes [13:01] its pretty ok, i am trying to run ROS on it [13:02] lots of cpu power for my purposes so its good [13:02] but im now stumped on what to me appears to be some driver bugs? on cdc_acm or something [13:02] ttyUSB is ok, ttyACM kills the os [13:03] 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 [13:04] tinkeros does not have that ttyACM issue [13:05] too bad ROS doesnt have support for debian on armhf :( [13:06] maybe one day it will have a better selection of os's to choose from like the rpi [13:07] i wonder if rpi has this issue of hanging the system when reading multiple ttyACMs [13:07] not sure havent tried