[Milhouse]

I have no idea how to access my kernel command line. Also iperf can't connect to libreelec via TCP. I must be doing something wrong. Thanks for all your help.

TCP should be the default for iperf - you're telling it to test UDP by using the -u option. You're also limiting the bandwidth to 100Mb (which you'll probably never see with UDP even without kernel issues).

I'd suggest using the following iperf options on the client:

text:


iperf -c 10.0.1.55 -t 60 -i 10

On the server, you only need:

text:


iperf -s

To access your kernel command line, you need to edit /flash/syslinux.cfg.

To make the /flash partition writeable, you first need to run mount -o remount,rw /flash.

You can use vi or nano to edit /flash/syslinux.cfg.

Make a backup of your current file with:

text:


cp /flash/syslinux.cfg /flash/syslinux.cfg.bak

The kernel command line is the line that begins with APPEND so if your current file looks like:

text:


DEFAULT linux

PROMPT 0



LABEL linux

 KERNEL /KERNEL

 APPEND boot=LABEL=System disk=LABEL=Storage quiet

then you need to change /flash/sylinux.cfg to be:

text:


DEFAULT linux

PROMPT 0



LABEL linux

 KERNEL /KERNEL

 APPEND boot=LABEL=System disk=LABEL=Storage quiet log_buf_len=16M

Obviously, if you get this wrong and corrupt the contents of this file you may have a non-booting system which you can recover using LibreELEC booted from a memory stick (you'll need to boot into live live mode, enable ssh, login with ssh and your internal HDD/SSD will be available via the /media path - restore syslinux.cfg from your syslinux.cfg.bak backup) then reboot from HDD/SSD.

Only make this change if you are confident about making the change.