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Thread: Macbook Air 4,1 trackpad not functioning after suspend

  1. #1
    Join Date
    Jul 2010
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    69

    Macbook Air 4,1 trackpad not functioning after suspend

    Hello!

    I got a Macbook Air 4,1 yesterday, I have 12.04 (64bit) running on it.

    I have an issue with the trackpad. It functions absolutely flawlessly, apart from when the machine wakes from suspend.

    Upon waking from suspend (suspend2RAM) I am unable to move the cursor... unless I click down and try and move it.

    So, after waking, it doesn't respond to touch unless I'm actually pressing down on the pad so it's clicked in.

    Anyone have any ideas on how I can fix this? Perhaps a script that re-launches the mouse input daemon after waking from suspend as a work around?

    **EDIT** **FIX**

    See my second post for a workaround
    Last edited by Kallun; April 5th, 2012 at 06:02 PM. Reason: Fix found

  2. #2
    Join Date
    Jun 2005
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    32

    Re: Macbook Air 4,1 trackpad not functioning after suspend

    same here

    found this bug link:
    https://bugs.launchpad.net/ubuntu/+s...cs/+bug/970574


    will test reloading module later today...

  3. #3
    Join Date
    Jul 2010
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    69

    Re: Macbook Air 4,1 trackpad not functioning after suspend

    Quote Originally Posted by mr_manny View Post
    same here

    found this bug link:
    https://bugs.launchpad.net/ubuntu/+s...cs/+bug/970574


    will test reloading module later today...
    Ah, well at least that's something!

    Cheers for the reply Let me know

    **EDIT** **FIX**

    Okay, I've fixed it by reloading the module from suspend with a script called by pm-utils

    See instructions below:

    su to switch to root

    Then:

    Code:
    cd  /etc/pm/sleep.d/
    Then:

    Code:
    touch 99mouse-pad
    Then use nano on the new file:

    Code:
    nano 99mouse-pad
    Paste in the below:

    Code:
    #!/bin/bash
    case $1 in
       hibernate)
    
           ;;
       suspend)
    
           ;;
       thaw)
           rmmod bcm5974; modprobe bcm5974
           ;;
       resume)
           rmmod bcm5974; modprobe bcm5974
           ;;
       *)
           ;;
    esac
    Then make it executable with:
    Code:
    chmod a+x 99mouse-pad
    Then test it out! Works fine for me
    Last edited by Kallun; April 5th, 2012 at 08:39 PM. Reason: Found a solution

  4. #4
    Join Date
    Apr 2007
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    Pittsburgh PA, USA
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    375
    Distro
    Ubuntu

    Re: Macbook Air 4,1 trackpad not functioning after suspend

    This is a great solution for this problem and should be posted to the macbook Air 4,x configuration wiki.

  5. #5
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    Jul 2010
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    69

    Re: Macbook Air 4,1 trackpad not functioning after suspend

    Quote Originally Posted by dark_harmonics View Post
    This is a great solution for this problem and should be posted to the macbook Air 4,x configuration wiki.
    Wow, thanks!

    How can we go about getting it there?

  6. #6
    Join Date
    Apr 2012
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    1

    Re: Macbook Air 4,1 trackpad not functioning after suspend

    I've just come across the same problem with my Macbook6,1 . Adding

    SUSPEND_MODULES="bcm5974"

    to

    /usr/lib/pm-utils/defaults

    solved the issue for me.

    My 2 cents

  7. #7
    Join Date
    Apr 2012
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    1

    Re: Macbook Air 4,1 trackpad not functioning after suspend

    This worked perfectly. Definitely should be on the wiki. Thanks a lot!


    Jim

  8. #8
    Join Date
    Aug 2008
    Location
    norman, ok
    Beans
    12

    Re: Macbook Air 4,1 trackpad not functioning after suspend

    brilliant. thanks!

  9. #9
    Join Date
    Aug 2007
    Location
    Netherlands
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    36

    Re: Macbook Air 4,1 trackpad not functioning after suspend

    Fixes the problem on a Macbook Air 3,2 as well.



    Quote Originally Posted by alx80 View Post
    I've just come across the same problem with my Macbook6,1 . Adding

    SUSPEND_MODULES="bcm5974"

    to

    /usr/lib/pm-utils/defaults

    solved the issue for me.

    My 2 cents

  10. #10
    Join Date
    Apr 2012
    Beans
    1

    Re: Macbook Air 4,1 trackpad not functioning after suspend

    Thanks very much for the fix. I was kinda frazzled for a few minutes there trying to figure out why my Mac had frozen. Then realised it was just the trackpad which had stopped responding. Was stoked to find this forum thread and relatively simple solution.

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