GRUB parameter is required for lbpcu running on Debian system (kernel 4.9 or above)

Description:

LBPCU is Advantech own build utility to control LAN Bypass features.  Some of customer had reported an error message was shown when they execute "lbpcu".

Target Audience:

For those user running lbpcu on Debian OS distributions

Behavior without correct GRUB parameter: 

You will find "Segmentation fault" when running lbpcu command

root@debian:/home/ae/lbpcu_binary_01_16# cat /etc/debian_version 
9.3
root@debian:/home/ae/lbpcu_binary_01_16# uname -a
Linux debian 4.9.0-4-amd64 #1 SMP Debian 4.9.65-3+deb9u1 (2017-12-23) x86_64 GNU/Linux
root@debian:/home/ae/lbpcu_binary_01_16# ./lbpcu -VF 1
Segmentation fault
root@debian:/home/ae/lbpcu_binary_01_16# ./lbpcu -VF 2
Segmentation fault
root@debian:/home/ae/lbpcu_binary_01_16# ./lbpcu -GA 1 POWER_ON
Segmentation fault
root@debian:/home/ae/lbpcu_binary_01_16# ./lbpcu -GA 2 POWER_ON
Segmentation fault
root@debian:/home/ae/lbpcu_binary_01_16# more lbpcu.cfg 
SEGMENT: 1
BUS: 0
DEV: 14
FUN: 0

SEGMENT: 2
BUS: 0
DEV: 14
FUN: 2




TYPE: PCIE

Solution :

Please add Kernel parameter "iomem=relaxed" into GRUB menu.