LaCie firewire external HD not detected
 

I'm running 4.14.83 gentoo on a desktop with 4xIntel Core 2 processor, KDE plasma 5.14.5
I'm trying to connect a 80GB external firewire LaCie HD, but it is not detected
at all, even in the ieee 1394 devices of the kinfocenter.
I'm running genkernel.

lspci | grep 1394 gives:
1:05.0 FireWire (IEEE 1394): LSI Corporation FW322/323 [TrueFire] 1394a Controller (rev 70)

lsmod | grep firewire gives:
firewire_ohci 45056 0
firewire_sbp2 24576 0
firewire_core 77824 2 firewire_ohci,firewire_sbp2
crc_itu_t 16384 1 firewire_core

dmesg | grep firewire gives:
[ 10.988057] firewire_ohci 0000:01:05.0: added OHCI v1.0 device as card 0, 8 IR + 8 IT contexts, quirks 0x0

dmesg | grep LaCie gives nothing

The ACPI kernel option is set.

In /dev fw0 first appeared, but trying to mount this device gave no result. After my work to add all the possible kernel firewire modules, fw0 disappeared in /dev, and I am not able to make it appear again.

I spent a lot of time in the forums, the last was
How do I install a Lacie 120GB External firewire Hardrive ?,
but with no result.
Any hint would be very appreciated.

Do you know what disk format is on the device? All the LaCie drives I've encountered were used with Macs and used HFSplus.

The LaCie disk is not formatted in HF, since when I tried to connect it to a power mac with OSX 10.5, the disk was detected, but it was not read. I was asked to format it in mac file system.
The disk is formatted in a linux file system, I think it should be ext3 (it is an old external disk formatted by myself many years ago to be used by a linux desktop).

Regards