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hi, im not able to get my keyboard to work on my laptop. the first time it booted after installation, it was working, but when i restarted, doesnt work. i looked around on the forum, found a place which links to a page on wiki which gives this:

 

A: There are a few tips regarding this subject on the forums. PS/2 apparently is not recognized by OS X if there is a USB mouse attached. The easiest solution is to use USB keyboard and mouse, or some mice include an adapter to allow them to operate off the PS/2 mouse port. Basically, you need to be all one way or the other for the OS to function correctly.

Alternatively, people have found that sometimes going into BIOS and disabling the USB (legacy) keyboard and mouse settings work. Note, you leave the USB ports enabled and strictly disable the keyboard and mouse USB functions in BIOS, if available.

Lastly, people patch the /etc/rc file thusly:

if [ "${VerboseFlag}" != "-v" ]; then

/usr/libexec/WaitingForLoginWindow

fi

kextunload /System/Library/Extensions/ApplePS2Controller.kext/Contents/PlugIns/ApplePS2Keyboard.kext

kextload /System/Library/Extensions/ApplePS2Controller.kext/Contents/PlugIns/ApplePS2Keyboard.kext

exit 0

 

If your PS/2 keyboard works the first time after installing but then doesn't work on subsequent reboots, it's probably a permissions error on the /System/Library/Extensions/ApplePS2Controller.kext directory. Unfortunately, repairing permissions via Disk Utility doesn't fix it, you have to do it yourself:

 

cd /System/Library/Extensions/ApplePS2Controller.kext

sudo find . -type d -exec chmod 755 {} \;

sudo find . -type f -exec chmod 644 {} \;

 

I've successfully used a PS/2 keyboard with a USB mouse with these permissions set correctly.

 

what do i do with those lines of code, or instructions? pls help!!!!

hi, im not able to get my keyboard to work on my laptop. the first time it booted after installation, it was working, but when i restarted, doesnt work. i looked around on the forum, found a place which links to a page on wiki which gives this:

 

A: There are a few tips regarding this subject on the forums. PS/2 apparently is not recognized by OS X if there is a USB mouse attached. The easiest solution is to use USB keyboard and mouse, or some mice include an adapter to allow them to operate off the PS/2 mouse port. Basically, you need to be all one way or the other for the OS to function correctly.

Alternatively, people have found that sometimes going into BIOS and disabling the USB (legacy) keyboard and mouse settings work. Note, you leave the USB ports enabled and strictly disable the keyboard and mouse USB functions in BIOS, if available.

Lastly, people patch the /etc/rc file thusly:

if [ "${VerboseFlag}" != "-v" ]; then

/usr/libexec/WaitingForLoginWindow

fi

kextunload /System/Library/Extensions/ApplePS2Controller.kext/Contents/PlugIns/ApplePS2Keyboard.kext

kextload /System/Library/Extensions/ApplePS2Controller.kext/Contents/PlugIns/ApplePS2Keyboard.kext

exit 0

 

If your PS/2 keyboard works the first time after installing but then doesn't work on subsequent reboots, it's probably a permissions error on the /System/Library/Extensions/ApplePS2Controller.kext directory. Unfortunately, repairing permissions via Disk Utility doesn't fix it, you have to do it yourself:

 

cd /System/Library/Extensions/ApplePS2Controller.kext

sudo find . -type d -exec chmod 755 {} \;

sudo find . -type f -exec chmod 644 {} \;

 

I've successfully used a PS/2 keyboard with a USB mouse with these permissions set correctly.

 

what do i do with those lines of code, or instructions? pls help!!!!

 

Hi, Me too toshi laptop !!

Which model you have ??

 

Greetings,

Patrick

  • 2 weeks later...

I'm the one who wrote the second half of that Wiki entry, which seems to be the problem you're having (i.e. laptop keyboard works after install but not on subsequent reboots). You need to enter those lines into a terminal (Utilities->Terminal), and of course you're going to need to do it straight after installation because you will probably be asked for your root password and if your keyboard isn't working then you won't get very far with that :poster_oops:

  • 4 months later...
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