Comment 28 for bug 1579278

@fish : Yes your issue does not belong here.

To figure out where your issue actually belongs, some details are missing:

If your stuck at low frequency issue only occurs after a suspend and on battery power, then your issue is covered by: https://bugzilla.kernel.org/show_bug.cgi?id=90041 (and it is not resolved quite yet, even though that is the status).

If your issue always occurs and you are not using the proper Dell AC adapter, then that is why.

Otherwise, I don't know. Try the acpi_cpufreq CPU frequency scaling driver instead. Also have a look at: https://bugzilla.kernel.org/show_bug.cgi?id=189861