Also, suspend works perfectly on XPS 15 with Ubuntu 14.04 and 14.10, although I had to add a couple of statements to rc.local to prevent it from waking in my ba

Also, suspend works perfectly on XPS 15 with Ubuntu 14.04 and 14.10, although I had to add a couple of statements to rc.local to prevent it from waking in my backpack: echo EHC1 > /proc/acpi/wakeup echo EHC2 > /proc/acpi/wakeup echo XHC > /proc/acpi/wakeup After this, the only two devices enabled in /proc/acpi/wakeup are power button and the lid (exactly what I want): cat /proc/acpi/wakeup | grep enabled PWRB S4 *enabled LID0 S4 *enabled Don't know if that helps...would probably need more detail on what isn't working with your model's suspend.