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Able to restore four finger trackpad gestures on Rev A after 10.5.8 update?

D

dborja

macrumors 65816
Original poster
Sep 13, 2007
1,007
109
Northern California
I've lost the four finger trackpad gestures after the update, as expected. So, I checked the Extensions directory and found the AppleUSBMultitouch.kext file is still the "hacked" one. I still went through the move-copy-reboot (after Permissions Repair) procedure in earlier threads, in case the file simply got corrupted. However, it's still not working.

Anybody with a Rev A experience this and, if so, found a fix?

TIA
 
Works fine for me. Got KEXT again, replaced, fixed permission, reboot, voila.
 
Strange... I had to rerun fix disk permissions twice and both times it complained about the same permission problems. After the second reboot, I got my four-finger track gesture back...
 
Works

I replaced the same old kext replacement that I saved and forgot to repair permissions. Rebooted and trackpad + keyboard wouldnt work. Rebooted in safe mode, which apparently repairs permissions, and now all gestures work fine.... Rev. A of course.
 
All working now. Thanks for confirming that the old "hack" still works. It made me stick with the procedure until I got it working again. :)
 
Sweet, the old hack worked perfectly for me, as well.

Don't forget to repair permissions before restarting. Otherwise you'll lose your keyboard and trackpad. Glad I had a Jaadu VNC on the iPhone.
 
For those who want to repair permission quicker, which completes in 0.1 second.

Code: 
cd /System/Library/Extensions/AppleUSBMultitouch.kext
sudo chown root:wheel .
sudo find . -type d -exec chmod 755 {} \;
sudo find . -type f -exec chmod 644 {} \;
sudo find . -name AppleUSBMultitouch -exec chmod 755 {} \;
sudo find . -name MultitouchHID -exec chmod 755 {} \;

Type this in terminal. (Type your own pass once when asked.)
 
For the record, the version number the AppleUSBMultitouch.kext was:

v189.29.1 (10.5.6)
v189.32 (10.5.7)
v189.35 (10.5.7)

I tend to just edit the kext myself - it's just adding six lines of text, but you have to be aware that the kext itself it stored in a cache (Extensions.mkext), so often a couple of reboots and invokes of the cache are required.
 
mrkgoo said:
For the record, the version number the AppleUSBMultitouch.kext was:

v189.29.1 (10.5.6)
v189.32 (10.5.7)
v189.35 (10.5.7)

I tend to just edit the kext myself - it's just adding six lines of text, but you have to be aware that the kext itself it stored in a cache (Extensions.mkext), so often a couple of reboots and invokes of the cache are required.
Click to expand...

Aha! That was probably my problem. It took three reboots to re-activate the four-finger trackpad gesture for my MBA...
 
dborja said:
Aha! That was probably my problem. It took three reboots to re-activate the four-finger trackpad gesture for my MBA...
Click to expand...

This got me wondering, and in the man page for kextcache, I found this little gem, which might solve this problem for future updates:

NOTE: Kernel extension installers should not use this program to update caches. Instead they should merely touch(1) the /System/Library/Extensions directory after they have finished, which will cause the system to update all necessary kernel extension caches.
 
stoconnell said:
This got me wondering, and in the man page for kextcache, I found this little gem, which might solve this problem for future updates:

NOTE: Kernel extension installers should not use this program to update caches. Instead they should merely touch(1) the /System/Library/Extensions directory after they have finished, which will cause the system to update all necessary kernel extension caches.
Click to expand...

Nice find! Thanks! I'll try to remember that next time
 
dborja said:
Nice find! Thanks! I'll try to remember that next time
Click to expand...

You can watch it happen. Right underneath Extensions.mkext (which I believe to be the first cache file), a temp file will be created before replacing the .mkext.
 
My keyboard and my trackpad both are not working. I tried to replace the hacked file with the 'real' AppleUSBMultitoch.kext and still- my keyboard and my trackpad are dead.

So, I think I need the hacked file that you have (please post here the link) and than I'll do reboot in safe mode(how am I doing this??)
THANKS
 
advaadva said:
My keyboard and my trackpad both are not working. I tried to replace the hacked file with the 'real' AppleUSBMultitoch.kext and still- my keyboard and my trackpad are dead.

So, I think I need the hacked file that you have (please post here the link) and than I'll do reboot in safe mode(how am I doing this??)
THANKS
Click to expand...

It's possible that it's a hardware problem; however, do the keyboard and trackpad work as the computer is booting? If they do, then maybe you should look into resetting the SMC:

SMC -- http://support.apple.com/kb/HT1411

and possibly the PRAM

PRAM and NVRAM == http://support.apple.com/kb/HT1379

To boot into single user mode, you need to hold down the Command and S keys as the machine boots.
 
stoconnell said:
It's possible that it's a hardware problem; however, do the keyboard and trackpad work as the computer is booting? If they do, then maybe you should look into resetting the SMC:

SMC -- http://support.apple.com/kb/HT1411

and possibly the PRAM

PRAM and NVRAM == http://support.apple.com/kb/HT1379

To boot into single user mode, you need to hold down the Command and S keys as the machine boots.
Click to expand...

on safe mode both working, and also while rebooting..
the problem caused while trying to re-active the four fingers multi-touch feature after an update to 10.5.8, both my keyboard and my trackpad are not working. I tried to replace the AppleUSBMultitoch.kext but still- I have an alert that this file is not installed correctly (every time I turn on the macbook pro)
I think that all this happen because my "repair permissions" doesn't work correctly- it's always repair the same things, and the AppleUSBMultitouch.kext is not on that list!


How can I make my disk utility repair things?!
Someone know what I need to do in order to repair the keyboard & trackpad?
All the SMC rebooting is related?
 
advaadva said:
How can I make my disk utility repair things?!
Someone know what I need to do in order to repair the keyboard & trackpad?
All the SMC rebooting is related?
Click to expand...

If you have an external keyboard/mouse, you can use disk utility to repair the packages; however, if you don't, you can try booting into safe mode, mounting the file system and running:

repair_packages --repair --standard-pkgs
 
stoconnell said:
If you have an external keyboard/mouse, you can use disk utility to repair the packages; however, if you don't, you can try booting into safe mode, mounting the file system and running:

repair_packages --repair --standard-pkgs
Click to expand...

I'm now in safe mode but a regular repairing permissions still repair the same things!
and I did not understand what should I do with the "repair_packages --repair --standard-pkgs"

Should I run it on terminal?
 
advaadva said:
I'm now in safe mode but a regular repairing permissions still repair the same things!
and I did not understand what should I do with the "repair_packages --repair --standard-pkgs"

Should I run it on terminal?
Click to expand...

Sorry, yes...

/usr/libexec/repair_packages --repair --standard-pkgs

This can also be accesses via pkgutil command using the --repair.

Poking around on my system, AppleUSBMultitouch.kext is part of 3 pkgs

pkgutil --file-info /System/Library/Extensions/AppleUSBMultitouch.kext
volume: /
path: System/Library/Extensions/AppleUSBMultitouch.kext

pkgid: com.apple.pkg.BaseSystem
pkg-version: 10.5.3.1.1.1188305148
install-time: 1233381189
uid: 0
gid: 0
mode: 40755

pkgid: com.apple.pkg.update.os.10.5.7
pkg-version: 1.0.1.1191932192
install-time: 1242176533
uid: 0
gid: 0
mode: 40755

pkgid: com.apple.pkg.update.os.10.5.8
pkg-version: 1.0.1.1191932192
install-time: 1249516851
uid: 0
gid: 0
mode: 40755

So, you can run the following from the terminal..

pkgutil --repair com.apple.pkg.BaseSystem
 
stoconnell said:
Sorry, yes...

This can also be accesses via pkgutil command using the --repair.

Poking around on my system, AppleUSBMultitouch.kext is part of 3 pkgs

pkgutil --file-info /System/Library/Extensions/AppleUSBMultitouch.kext
volume: /
path: System/Library/Extensions/AppleUSBMultitouch.kext

pkgid: com.apple.pkg.BaseSystem
pkg-version: 10.5.3.1.1.1188305148
install-time: 1233381189
uid: 0
gid: 0
mode: 40755

pkgid: com.apple.pkg.update.os.10.5.7
pkg-version: 1.0.1.1191932192
install-time: 1242176533
uid: 0
gid: 0
mode: 40755

pkgid: com.apple.pkg.update.os.10.5.8
pkg-version: 1.0.1.1191932192
install-time: 1249516851
uid: 0
gid: 0
mode: 40755

So, you can run the following from the terminal..

pkgutil --repair com.apple.pkg.BaseSystem
Click to expand...

I don't know what all of this pkg that you wrote.. but I did run "pkgutil --repair com.apple.pkg.BaseSystem" in the terminal and it did a lot of things.. also errors and missing things.
:\
 
Thanks for helping me! I finally got it right! (after 2 times of Combo update and a lot of terminal things..)

THANK YOU!! :)
 
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