Wulf Richartz, I hope this output from dmidecode is enough. Could you please forward it to the kernel.org bugzilla?
Mainboard: Handle 0x0001, DMI type 1, 27 bytes System Information Manufacturer: LENOVO Product Name: 10A7000LGE Version: ThinkCentre M93p Wake-up Type: Power Switch SKU Number: LENOVO_MT_10A7 Family: To be filled by O.E.M. Handle 0x0002, DMI type 2, 15 bytes Base Board Information Manufacturer: LENOVO Product Name: SHARKBAY Version: 0B98401 PRO Features: Board is a hosting board Board is replaceable Location In Chassis: To be filled by O.E.M. Chassis Handle: 0x0003 Type: Motherboard Contained Object Handles: 0 BIOS: Handle 0x0000, DMI type 0, 24 bytes BIOS Information Vendor: LENOVO Version: FBKT72AUS Release Date: 01/26/2014 Address: 0xF0000 Runtime Size: 64 kB ROM Size: 6656 kB Characteristics: PCI is supported BIOS is upgradeable BIOS shadowing is allowed Boot from CD is supported Selectable boot is supported BIOS ROM is socketed EDD is supported 5.25"/1.2 MB floppy services are supported (int 13h) 3.5"/720 kB floppy services are supported (int 13h) 3.5"/2.88 MB floppy services are supported (int 13h) Print screen service is supported (int 5h) 8042 keyboard services are supported (int 9h) Serial services are supported (int 14h) Printer services are supported (int 17h) ACPI is supported USB legacy is supported BIOS boot specification is supported Targeted content distribution is supported UEFI is supported BIOS Revision: 1.72 Firmware Revision: 1.13 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1320282 Title: [Lenovo ThinkCentre M93p] reboots instead of shutting down To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1320282/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs