jakobsfilm
Level 1
(4 points)
Q: Very strange behaviour of mouse, trackpad and finder
As if there were a demon in my Mac:
- left mouse click doesn't work correctly
- left mouse click clicks by itself
- cursor sticks to objects on the screen and drags them around, from desktop, from safari, anything
- dock doesn't appear
- when I drag the cursor over objects it marks them without me clicking left mouse click, it also creates rectangles
- click another window, but it doesn't come in foreground
- when all these strange things happen, the mouse pad seems not to work, it doesn't click, it feels differently, doesn't make the usual clicking sound, doesn't move down
- the USB mouse is no better, though! (when all this happens)
... I can end this ghost in the machine only by forcing the Mac to shut down
... after that it sometimes works ok for a while... then IT happens again
... closing and opening the mbp helps sometimes
is it the software, is it the hardware, is it both?
(I repaired disk permissions, cleaned PR ram, scanned for viruses)
any ghostbusters around???
p.s.: all these thing do not happen when I boot from my windows partition on the same mac
MacBook Pro, OS X Mavericks (10.9), WLAN
Linc Davis
Level 10
(208,037 points)
There are several possible causes for this issue. Take each of the following steps that you haven't already tried until it's resolved. Some may not be applicable.
1. Follow the instructions in this support article, and also this one, if applicable.
2. Open the Bluetooth preference pane in System Preferences and check for unknown or forgotten input devices. Disconnect any USB input devices that you aren't using.
3. Boot in safe mode and test, preferably without launching any third-party applications. If you don't have the problem in safe mode, but it comes back when you reboot as usual, stop here and post your results. If you can't boot in safe mode, do the same. If you booted in safe mode and there was no change, go on to the next step.
4. Reset the System Management Controller.
5. If you're using a Bluetooth trackpad, investigate potential sources of interference, including USB 3 devices.
6. A swollen battery in a MacBook Pro or Air can impinge on the trackpad from below and cause erratic behavior. If you have trouble clicking the trackpad, this is likely the reason. The battery must be replaced without delay.
7. Press down all four corners of the trackpad at once and release. If there's any effect, it's likely to be temporary, and the unit needs to be serviced or replaced.
8. There's a report that a (possibly defective) Thunderbolt Ethernet adapter can cause the built-in trackpad of a MacBook to behave erratically. If you're using such an adapter, disconnect it and test.
9. There's also a of erratic cursor movements caused by an external display that was connected but not turned on.
10. If none of the above applies, or if you have another reason to think that your computer is being remotely controlled, remove it from the network by turning off Wi-Fi (or your Wi-Fi access point), disconnecting from a Bluetooth network link, and unplugging the Ethernet cable or USB modem, whichever is applicable. If the cursor movements stop at once, you should suspect an intrusion.
11. Make a "Genius" appointment at an Apple Store to have the machine and/or external trackpad tested.
