| 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 | 12:33 |
| renl | in this case the computer is an asus tinker board | 12:36 |
| 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 | 12:38 |
| y0sh | renl: how do you like your tinkerboard | 12:58 |
| renl | in general? | 13:01 |
| y0sh | yes | 13:01 |
| renl | its pretty ok, i am trying to run ROS on it | 13:01 |
| 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 | 13:02 |
| 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 | 13:03 |
| renl | tinkeros does not have that ttyACM issue | 13:04 |
| renl | too bad ROS doesnt have support for debian on armhf :( | 13:05 |
| y0sh | maybe one day it will have a better selection of os's to choose from like the rpi | 13:06 |
| renl | i wonder if rpi has this issue of hanging the system when reading multiple ttyACMs | 13:07 |
| y0sh | not sure havent tried | 13:07 |
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