Great it works for me !
Thanks !
[ 100.829612] systemd-shutdown[1]: Powering off.
[ 101.835976] <redpill/override_symbol.c:250> Obtaining lock for <GetHwCapability+0x0/0x100 [broadwellnk_synobios]/ffffffffa0ac9430>
[ 101.837476] <redpill/override_symbol.c:250> Writing original code to <ffffffffa0ac9430>
[ 101.838488] <redpill/override_symbol.c:250> Released lock for <ffffffffa0ac9430>
[ 101.839439] <redpill/override_symbol.c:221> Obtaining lock for <GetHwCapability+0x0/0x100 [broadwellnk_synobios]/ffffffffa0ac9430>
[ 101.840910] <redpill/override_symbol.c:221> Writing trampoline code to <ffffffffa0ac9430>
[ 101.841938] <redpill/override_symbol.c:221> Released lock for <ffffffffa0ac9430>
[ 101.842881] <redpill/bios_hwcap_shim.c:66> proxying GetHwCapability(id=8)->support => real=0 [org_fout=0, ovs_fout=0]
[ 102.161522] sd 2:0:0:0: [sdc] Stopping disk
[ 102.164413] sd 1:0:0:0: [sdb] Stopping disk
[ 102.167243] sd 0:0:0:0: [synoboot] Stopping disk
[ 102.171275] e1000e: EEE TX LPI TIMER: 00000000
[ 102.196707] parameter error. gpiobase=00000000, pin=0, pValue=ffff880234983da4
[ 102.702007] Turned off USB vbus gpio 0 (ACTIVE_LOW)
[ 102.705223] parameter error. gpiobase=00000000, pin=0, pValue=ffff880234983da4
[ 103.210125] Turned off USB vbus gpio 0 (ACTIVE_LOW)
[ 103.213234] parameter error. gpiobase=00000000, pin=0, pValue=ffff880234983da4
[ 103.718086] Turned off USB vbus gpio 0 (ACTIVE_LOW)
[ 103.721427] parameter error. gpiobase=00000000, pin=0, pValue=ffff880234983da4
[ 104.226176] Turned off USB vbus gpio 0 (ACTIVE_LOW)
[ 104.229198] parameter error. gpiobase=00000000, pin=0, pValue=ffff880234983da4
[ 104.734133] Turned off USB vbus gpio 0 (ACTIVE_LOW)
[ 104.745350] ACPI: Preparing to enter system sleep state S5
[ 104.749171] reboot: Power down
[ 104.752243] acpi_power_off called
[ 104.754663] Confirm SLP_TYP poweroff status 0 pm1a 1 pm1b 1
[ 104.768105] Confirm OS poweroff status 0 pm1a 2001 pm1b 2001