I confirm that disabling USB3.0 in my BIOS allows my Thinkpad E440 to suspend/resume successfully again.
uname -a Linux pumbaa 3.13.0-35-generic #62-Ubuntu SMP Fri Aug 15 01:58:42 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux Handle 0x000C, DMI type 1, 27 bytes System Information Manufacturer: LENOVO Product Name: 20C5CTO1WW Version: ThinkPad Edge E440 SKU Number: LENOVO_MT_20C5_BU_Think_FM_ThinkPad Edge E440 Family: ThinkPad Edge E440 Handle 0x0030, DMI type 0, 24 bytes BIOS Information Vendor: LENOVO Version: J9ET88WW (2.08 ) Release Date: 05/20/2014 Address: 0xE0000 Runtime Size: 128 kB ROM Size: 16384 kB Characteristics: PCI is supported PNP is supported BIOS is upgradeable BIOS shadowing is allowed Boot from CD is supported Selectable boot is supported ACPI is supported USB legacy is supported BIOS boot specification is supported Targeted content distribution is supported UEFI is supported BIOS Revision: 2.8 Firmware Revision: 2.8 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1331077 Title: [Lenovo ThinkPad Edge E540] suspend/resume failure To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1331077/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs