Hans, I tried to observe the [DLL063E] kernel thread on my laptop with powertop, and can't reproduce the same value. I keep moving my finger on touchpad as fast as possible for a whole powertop refresh cycle and got the max values I can observe. Usage Events/s Category Description 587 us/s 0.6 Process [irq/39-DLLL063E:]
The events counter on your laptop is too high, that's the problem. Could you do the following commands and attach the following log? 1. dmesg > dmesg.log 2. the ftrace log sudo su cd /sys/kernel/debug/tracing echo function > current_tracer echo :mod:hid_rmi > set_ftrace_filter # please don't touch the touchpad after enter this command cp trace /tmp/trace.no_touch # a single tap on touchpad cp trace /tmp/trace.tap 3. attach dmesg.log, /tmp/trace.no_touch, and /tmp/trace.tap Thanks. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1305522 Title: Backport Synaptics HID touchpad driver for 14.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1305522/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
