Macbook Air 4,1 trackpad not functioning after suspend

[Kallun]

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

[mr_manny]

same here

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


will test reloading module later today...

[Kallun]

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:

cd  /etc/pm/sleep.d/

Then:

touch 99mouse-pad

Then use nano on the new file:

nano 99mouse-pad

Paste in the below:

#!/bin/bash
case $1 in
   hibernate)

       ;;
   suspend)

       ;;
   thaw)
       rmmod bcm5974; modprobe bcm5974
       ;;
   resume)
       rmmod bcm5974; modprobe bcm5974
       ;;
   *)
       ;;
esac

Then make it executable with:

chmod a+x 99mouse-pad

Then test it out! Works fine for me

[dark_harmonics]

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

[Kallun]

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?

[alx80]

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

[jackley]

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


Jim

[lunar cranium]

brilliant. thanks!

[cyberco]

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

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

[ryanhellyer]

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.