[12:33] <renl> 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] <renl> basically it will overwhelm the cpu with software interrupts
[12:36] <renl> in this case the computer is an asus tinker board
[12:38] <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
[12:38] <renl> when i tried using debian stretch on kernel 4.4.71 for the board it does not have this problem
[12:38] <renl> appears to be a problem only on ubuntu
[12:58] <y0sh> renl: how do you like your tinkerboard
[13:01] <renl> in general?
[13:01] <y0sh> yes
[13:01] <renl> its pretty ok, i am trying to run ROS on it
[13:02] <renl> lots of cpu power for my purposes so its good
[13:02] <renl> but im now stumped on what to me appears to be some driver bugs? on cdc_acm or something
[13:02] <renl> ttyUSB is ok, ttyACM kills the os
[13:03] <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
[13:04] <renl> tinkeros does not have that ttyACM issue
[13:05] <renl> too bad ROS doesnt have support for debian on armhf :(
[13:06] <y0sh> maybe one day it will have a better selection of os's to choose from like the rpi
[13:07] <renl> i wonder if rpi has this issue of hanging the system when reading multiple ttyACMs
[13:07] <y0sh> not sure havent tried