u-boot messages gone SOLVED

After switching sata cables between dvd end HD booting is still possible for both, but i don't see the u-boot interface and messages any more

nvgetvar gives me

baudrate=115200
loads_echo=1
hostname=Sam460ex
stdin=usbkbd
ide_doreset=on
ide_reset_timeout=15
ide_cd_timeout=20
pcie_mode=RP:RP
pciconfighost=1
bootcmd=menu; run menuboot_cmd
menucmd=menu
boot_method=boota
usb_enable_4x0=1
usb_retry=1
usb_ohci_power_down_before_reset=1
scan_usb_storage=1
ethact=ppc_4xx_eth0
ethaddr=00:50:c2:80:d5:b4
serdes=sata2
video_activate=pci
hush=0
ipaddr=192.168.2.50
serverip=192.168.2.222
stdout=vga
menuboot_cmd=boota
ver=U-Boot 2010.06.05a (Jan 30 2012 - 16:06:56)
boot1=ssii
boot2=ssiicdrom
boota_timeout=2
menuboot_delay=2
os4_commandline=debuglevel=0
bootargs=root=/dev/sda3 console=tty0

@JosDuchIt

But you get AOS4 bootscreen and Workbench?

What monitor <-> sam460ex video connectior do you use? vga,dvi,hdmi?

My UBoot variables (so you can take a look and make diff):
#c:NVGetVar
baudrate=115200
loads_echo=1
hostname=Sam460ex
stdout=vga
stdin=usbkbd
ide_doreset=on
ide_cd_timeout=20
pcie_mode=RP:RP
pciconfighost=1
bootcmd=menu; run menuboot_cmd
menucmd=menu
boot_method=boota
usb_enable_4x0=1
usb_retry=1
scan_usb_storage=1
ethact=ppc_4xx_eth0
ethaddr=00:50:c2:80:d5:90
ide_reset_timeout=2
s4sii_maxbus=1
filesize=2A3B
fileaddr=2000000
ipaddr=192.168.1.201
serverip=192.168.1.200
boot1=s4siicdrom
boot2=s4sii
boota_timeout=3
menuboot_cmd=boota
bootmenu_waitticks=150
ver=U-Boot 2015.a (May 16 2015 - 14:20:11)
video_activate=pci
hush=0
x86emu=1
serdes=pci-e
ddr2_boost=0
menuboot_delay=2
os4_commandline=debuglevel=4 MUNGE SERIAL
bootargs=root=/dev/ramdisk file=/cdrom/preseed/ubuntu-mate.seed boot=casper rootdelay=10
#

I can't see anything related comparing your 2 variables list (and with my Uboot var list).

Jos: are you sure you have "video_activate=pci" ?
It seems you have "sm502" here. It means the image is sent to the onboard VGA port and not your graphic card that you have plugged in the PCIe slot.

@Elwood
It's what nvgetvar gives me

"video_activate=pci"
My monitor is a hp2211x connected to the graphic card with a DVI connector

@Elwood

Was able to recover the messages with
nvsetvar video_num 1

something solved at last