Hi Salvatore! Thanks for the info. I read about, but didnt think on the experimental repo... :)
Now i installed this kernel and rebooted: # uname -a Linux aldebaran 4.9.0-rc7-amd64 #1 SMP Debian 4.9~rc7-1~exp1 (2016-12-03) x86_64 GNU/Linux # systemd-analyze Startup finished in 8.733s (firmware) + 18.800s (loader) + 12.723s (kernel) + 6.350s (userspace) = 46.607s and dmesg shows the following... the 6 second-gap still exists here. [ 0.403864] ACPI: Added _OSI(Module Device) [ 0.403865] ACPI: Added _OSI(Processor Device) [ 0.403866] ACPI: Added _OSI(3.0 _SCP Extensions) [ 0.403867] ACPI: Added _OSI(Processor Aggregator Device) [ 0.414682] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored [ 0.421810] ACPI: Dynamic OEM Table Load: [ 0.421820] ACPI: SSDT 0xFFFF8BF509FA5000 0003F3 (v01 PmRef Cpu0Cst 00003001 INTL 20130927) [ 0.422283] ACPI: Dynamic OEM Table Load: [ 0.422292] ACPI: SSDT 0xFFFF8BF50982E800 0005DB (v01 PmRef ApIst 00003000 INTL 20130927) [ 0.422831] ACPI: Dynamic OEM Table Load: [ 0.422837] ACPI: SSDT 0xFFFF8BF509FC8000 000119 (v01 PmRef ApCst 00003000 INTL 20130927) [ 0.424079] ACPI : EC: EC started [ 6.346985] ACPI: \_SB_.PCI0.LPCB.EC0_: Used as first EC [ 6.346987] ACPI: \_SB_.PCI0.LPCB.EC0_: GPE=0x6, EC_CMD/EC_SC=0x66, EC_DATA=0x62 [ 6.346989] ACPI: \_SB_.PCI0.LPCB.EC0_: Used as boot DSDT EC to handle transactions [ 6.346990] ACPI: Interpreter enabled [ 6.347029] ACPI: (supports S0 S3 S4 S5) [ 6.347030] ACPI: Using IOAPIC for interrupt routing Do you need more informations about my system? Which one? Regards, Jakob