Your system somehow saves APST config across reboots. The current code logic will skip configuring APST if the device is in quirk table - so the new APST value will never get set despite default_ps_max_latency_us=0.
I'll send a patch for this issue. Also, thanks for your testing =) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1699004 Title: APST gets enabled against explicit kernel option To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1699004/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
