Jake,

The error means that you have a mismatch between the kernel version you are running and the one required for the package. Ever since this [https://dev.openwrt.org/changeset/29686] happened OpenWRT requires that modules are from the same build as the kernel you are running, by checking a hash.

Unfortunately it seems that http://builds.sudomesh.org/builds/chaos_calmer/ar71xx/packages/ only contains a smattering of packages, and kmod-usb-acm is not among them.Any reason for this?

All kmod- packages ought to be built and made available there, in order to guarantee kernel compatibility. And your opkg.conf "base" pointer should point at the sudomesh repo.

For instant gratification, you can try "opkg --force-depends install <package>" (but don't expect it to work).

Alex

2017-10-15 19:16 GMT-07:00 Jake <jake@spaz.org>:

i'm trying to use a mesh router to operate a duck coop door, and this means i
want the USB port to recognize an ACM serial port.  This is a normal thing for
openWRT and usually works thusly:

opkg update # downloads opkg package lists to /tmp
opkg install kmod-usb-acm # installs a kernel module for ACM serial USB devices

unfortunately, there are some problems with present mesh node firmware
(including a node that was flashed in December 2015 and another which was
flashed recently) and this process doesn't work.

for starters, the opkg.conf on mesh nodes is messed up - i'm not sure why but
there's a github issue here:
https://github.com/sudomesh/sudowrt-firmware/issues/108

to get "opkg update" to work, follow the instructions in the first comment.
That works for me, but when i do "opkg install kmod-usb-acm" i get the
following error:

# opkg install kmod-usb-acm
Installing kmod-usb-acm (3.18.23-1) to root...
Downloading http://downloads.openwrt.org/chaos_calmer/15.05.1/ar71xx/generic/packages/base/kmod-usb-acm_3.18.23-1_ar71xx.ipk.
Collected errors:
 * satisfy_dependencies_for: Cannot satisfy the following dependencies for
 * kmod-usb-acm:
 *  kernel (= 3.18.23-1-b2f200610f46d20ef52d269421369d0c) *
 * opkg_install_cmd: Cannot install package kmod-usb-acm.
# uname -a
    Linux jerkey-tl-wdr3500-2 3.18.23 #1 Fri Dec 25 00:14:49 EST 2015 mips GNU/Linux

i have no idea what this error means or why it's happening, can anyone offer
advice?

thank you,
-jake
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