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Keyboard Brightness F1 and F2 button wont work MacPro

J

jevillarosa

macrumors newbie
Original poster
Mar 26, 2013
4
0
Hi

I have a problem with my Keyboard brightness (F1 and F2)

I already tried to go to the Preferences>Keyboard and Use all F1 F2 keys as standard function

I also tried switching keyboards

Sometimes it works when i tweak some random settings on the display preferences like the underscan on the second display monitor (weird)
but after i restart it wont work again

I have 2 Display monitor one is the thunderbolt display and a samsung monitor
could it be possible that i haven't used the thunderbolt display for about 5 months thats why its being weird? (btw i haven't used the display because my macpro was sent to the powermac to be repaired)

Please help Thanks
 
jevillarosa said:
Hi

I have a problem with my Keyboard brightness (F1 and F2)

I already tried to go to the Preferences>Keyboard and Use all F1 F2 keys as standard function

I also tried switching keyboards

Sometimes it works when i tweak some random settings on the display preferences like the underscan on the second display monitor (weird)
but after i restart it wont work again

I have 2 Display monitor one is the thunderbolt display and a samsung monitor
could it be possible that i haven't used the thunderbolt display for about 5 months thats why its being weird? (btw i haven't used the display because my macpro was sent to the powermac to be repaired)

Please help Thanks
Click to expand...


Mac Pro or MacBook Pro?

If Mac Pro how are you getting a TB display woking?
 
GermanyChris said:
Mac Pro or MacBook Pro?

If Mac Pro how are you getting a TB display woking?
Click to expand...

hi

TB display is working fine the only thing that didn't work was the brightness button on my keyboard.

just now i think the problem was the cable of the TB display was probably loose because when i tried to use photobooth it could not detect the camera so i figured the cable was the reason i tried to reconnect the cables behind the macpro and the camera work and so did the brightness button on the keyboard

i think this is resolved. i hope it works continuously

Thanks
 
jevillarosa said:
hi

TB display is working fine the only thing that didn't work was the brightness button on my keyboard.

just now i think the problem was the cable of the TB display was probably loose because when i tried to use photobooth it could not detect the camera so i figured the cable was the reason i tried to reconnect the cables behind the macpro and the camera work and so did the brightness button on the keyboard

i think this is resolved. i hope it works continuously

Thanks
Click to expand...

So it was a MacBook Pro correct?
 
GermanyChris said:
So it was a MacBook Pro correct?
Click to expand...

no sir this is a MacPro
Screen_Shot_2013_03_27_at_4_23_51_PM.png
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pic upload[/IMG]
 
jevillarosa said:
no sir this is a MacPro
[url=http://postimage.org/][url=http://s22.postimg.org/rheo9fwdt/Screen_Shot_2013_03_27_at_4_23_51_PM.png]Image[/url][/url]
[url=http://postimage.org/]pic upload[/url]
Click to expand...

then how did you get the Thunderbolt display working without a Thunderbolt port?
 
The first thing I would have suggested was to look at the Keyboard Settings F1/F2 that you have already checked. It sounds like you have already done the most obvious.

Is the problem resolved if you disconnect all devices apart from the keyboard and the non-TB monitor?
 
GermanyChris said:
then how did you get the Thunderbolt display working without a Thunderbolt port?
Click to expand...

pardon i was referring to the display I'm not very literate on these things :p

----------
DanielCoffey said:
The first thing I would have suggested was to look at the Keyboard Settings F1/F2 that you have already checked. It sounds like you have already done the most obvious.

Is the problem resolved if you disconnect all devices apart from the keyboard and the non-TB monitor?
Click to expand...

yes, I tried to disconnect the devices because it was just newly set up so i thought it wasn't properly connected

Thank you for contributing :)
 
What I'm getting at is you cannot connect a Thunderbolt display to a Mac Pro...you can however connect them to hackintoshes..
 
GermanyChris said:
What I'm getting at is you cannot connect a Thunderbolt display to a Mac Pro...you can however connect them to hackintoshes..
Click to expand...

Second this, I don't think Thunderbolt works on Mac Pro. I have 2 ACD connect to Mac Pro, however, the F1/F2 can only control brightness on the main display, not on the 2nd display though.
 
The MiniDisplayPort and the Thunderbolt port connection is the same.

The signal to the Thunderbolt display is a MiniDisplayPort video signal, the video will work on a Thunderbolt display when hooked to a MiniDisplayPort Mac, however, the Thunderbolt ports and Thunderbolt functionality will not work. It operates as a MiniDisplayPort Cinema Display but you do not have Thunderbolt functionality unless your Mac is equipped with Thunderbolt ports (late 2011 or newer).
 
WardC said:
The MiniDisplayPort and the Thunderbolt port connection is the same.
Click to expand...

Physically but not electrically. The active pins and signals on them are different.

Thunderbolt controllers have a backward compatible bypass they can use but a DisplayPort controller in a computer can't drive a TB display. Not going to work.


The signal to the Thunderbolt display is a MiniDisplayPort video signal, the video will work on a Thunderbolt display when hooked to a MiniDisplayPort Mac,
Click to expand...

Not. The signal sent to a TB display is a Thunderbolt signal not a DisplayPort signal. It is decoded and switched to DisplayPort on the other side of a TB controller but it isn't transmitted that way. That is exactly why can get two DP v1.1 signals on a single "video' connection with TB but not supported in that version of the DP protocols.


More likely this is a LED Cinema display that happens to look like a TB Cinema display and there is just confusion. Someone with a clue probably sold him the proper combination.
 
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