Comment 96 for bug 1305522

I'm not using Ubuntu nor the kernel here posted, but Debian sid with kernel 3.16-rc*

I have the same problem reported in comment #78.
powertop reports a high number of events/s for DLL060A:00 and also INT33C3:00.

Doing what was suggested in #80, I got the following:

 irq/39-DLL060A:-315 [002] .... 643.869064: rmi_f30_input_event <-rmi_raw_event
 irq/39-DLL060A:-315 [002] .... 643.879318: rmi_raw_event <-hid_input_report
 irq/39-DLL060A:-315 [002] .... 643.879323: rmi_f11_input_event <-rmi_raw_event
 irq/39-DLL060A:-315 [002] .... 643.879327: rmi_f30_input_event <-rmi_raw_event
 irq/39-DLL060A:-315 [002] .... 643.889271: rmi_raw_event <-hid_input_report
 irq/39-DLL060A:-315 [002] .... 643.889275: rmi_f11_input_event <-rmi_raw_event
 irq/39-DLL060A:-315 [002] .... 643.889277: rmi_f30_input_event <-rmi_raw_event
 irq/39-DLL060A:-315 [002] .... 643.899350: rmi_raw_event <-hid_input_report
 irq/39-DLL060A:-315 [002] .... 643.899353: rmi_f11_input_event <-rmi_raw_event
 irq/39-DLL060A:-315 [002] .... 643.899356: rmi_f30_input_event <-rmi_raw_event

This is just a small part of what I get, the above lines are continuosly generated at a constant rate even without touching the touchpad.

Right after a reboot those lines appears only when touching the touchpad, but after some use, they are constantly generated.

After some tests I found that this happens once ABS_MT_TOUCH_MAJOR reaches 12. I'm not sure of this, but I tried a few times already and this is the only relation I could find.

Can anyone confirm this? Use 'evtest' to see the value of ABS_MT_TOUCH_MAJOR.

I would also like to add that I think that the events are sent at a higher rate when compared to the old driver. I think this is causing a higher power consumpion when using the touchpad.