Loading fails on Ubuntu 22.04

[repvik]

Fresh install of 22.04, compiled and attempted to load. Got this error message:

[  910.953514] rndu4000: loading out-of-tree module taints kernel.
[  910.953684] rndu4000: module verification failed: signature and/or required key missing - tainting kernel
[  910.954685] rndu4000 : exclusive access to gpio registers failed

dmidecode:

root@nas:~# dmidecode --type 1
# dmidecode 3.3
Getting SMBIOS data from sysfs.
SMBIOS 2.6 present.

Handle 0x0001, DMI type 1, 27 bytes
System Information
        Manufacturer: NETGEAR
        Product Name: ReadyNAS
        Version: 08/23/2011 ReadyNAS-NVX-V2 V1.10
        Serial Number:
        UUID: 03000200-0400-0500-0006-000700080009
        Wake-up Type: Power Switch
        SKU Number:
        Family:

lspci:

00:1f.0 ISA bridge: Intel Corporation 82801IB (ICH9) LPC Interface Controller (rev 02)

cpuinfo:

processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 28
model name      : Intel(R) Atom(TM) CPU D410   @ 1.66GHz

[repvik]

Ok, rmmod/blacklisting lpc_ich should probably be included in instructions.
Got it loaded now.

[fmor]

Strange, both can be loaded on my debian.

root@nas:~# rmmod rndu4000 
rmmod: ERROR: Module rndu4000 is not currently loaded
root@nas:~# rmmod lpc_ich 
rmmod: ERROR: Module lpc_ich is not currently loaded
root@nas:~# modprobe lpc_ich 
root@nas:~# insmod rndu4000.ko 
root@nas:~# lsmod | grep rndu4000
rndu4000               40960  0
root@nas:~# lsmod | grep lpc_ich
lpc_ich                28672  0

[40901.699858] rndu4000 : Unloaded
[40949.350383] iTCO_wdt: Found a ICH9 TCO device (Version=2, TCOBASE=0x0860)
[40949.359761] iTCO_wdt: initialized. heartbeat=30 sec (nowayout=0)
[40966.358368] rndu4000 : Loaded

[repvik]

That's odd. The only way I could get rndu4000 to load was specifically to unload lpc_ich.
The only difference I see is that I have a newer bios version