Description of problem:

Network devices can have arbitrary names, and due to
http://fedoraproject.org/wiki/Features/ConsistentNetworkDeviceNaming, will have
different names in Fedora 15.

powertop-1.13/ethernet.c:

The wake-on-lan tests and the wake-on-lan disable both hardcode 'eth0'.

powertop-1.13/powertop.c:static void do_proc_irq(void)
...
                /* deal with multi-queue NICs */
                if (strncmp(name, "eth",3) == 0 && strchr(name,' ') == NULL) {
                        c = strchr(name, '-');
                        if (c)
                                *c = 0;
                }
...

This implies this will mishandle any devices *not* named ethX, if they have multiple queues.

Version-Release number of selected component (if applicable):

powertop-1.13

How reproducible:

By visual inspection.