MacBook Pro :: Brightness Sensor Not Working Properly
Jun 14, 2010
I bought my first Mac computer last month, the 13" 2.4 variant. Loving it so far.I have lately noticed however that my ambient light sensor is not much of help. Before, after coming out of sleep I could notice the screen changing to accommodate for the room's light output. I could also put my hand over the sensor near the iSight and witness the brightness decrease in front of me.
Just this morning, I opened my MacBook which had been sleeping overnight. for some strange reason, even when the screen was up, the light at the button was still glowing (indicating it was asleep). I tried forcing it to shutdown. When I turned it on again, it went to sleep mode right when the desktop was about to load. I tried booting from Windows 7 but sure enough, when I reached the login screen, the computer went to sleep. I concluded that it was definitely a sleep sensor problem.
So I've recently purchased the new 13" MBP, and to my understanding, there is a light sensor that turns up the brightness of the backlit keyboard and screen when in dark environments.
However, the problem with my MBP is that when I turn on the lights in my room, the screen brightness and backlit keyboard both turn brighter, and when I turn off the lights, the screen and keyboard grow dimmer, which is exactly the opposite of what is supposed to happen.
Wonder it's just me or hardware/software issue. If I set brightness at 50% with power adaptor on, and sleep, unplug, open lid or do vice versa, the next time when the MBP wake up, the brightness either goes to lowest setting or highest, very annoying. Sometimes I see keyboard light did the same thing but not as frequent as screen backlit.
I just dropped in a 1 TB drive into my 17" MacBook Pro and it seems like that the Sudden Motion Sensor doesn't work not. I do not hear the sound when it engages as I did with the stock 500 gig drive that was in there. My understanding is that the Sudden Motion Sensor was not built into the drive and it was built into the notebook itself. Shouldn't I still be hearing the drive stop when the Sudden Motion Sensor engages?
As of today, I noticed my ambient light sensor doesnt seem to work. I tried disabling and re-enabling it in system preferences, but that hasn't done the trick.
Is there some test I can do to see if it's working or not? I know it worked two days ago, because i took the i7 15" MBP outside and it automatically switched to max brightness. Today I took it outside and the brightness didn't switch at all and I couldn't see the screen it was so dark.
Since the last time it definitely worked, all I've done is install Windows 7 64-bit with Boot Camp and hooked up the MBP to an external 20" monitor with a minidisplay-DVI adapter.
I could just by the replacement fan and swap it out but I am wondering if there is anything else that could be malfunctioning and causing the fan to NOT spin up - anything I can check before forking out the cash.Is there a way to see if the temp sensor is working? Could it be the LB? Can I test the electrical supply to the fan by using a multimeter? If so what setting/voltage, etc should I use to read that? And lastly, is there more than one fan?
I have a MBP with an apple wireless keyboard. The keyboard has brightness keys on it but they have recently stopped working. It is strange as the keys on the MBP still work but the ones on the bluetooth keyboard, placed exactly in the same spot (the wireless KB and the Macbook pro's KB are exactly the same), don't.
I have a 2011 (?) macbook air and ever since my trip to the genius bar for a battery issue my function keys don't work after I wake it up (just opening screen). May also be related to last firmware update?
I have checked the function key mapping in settings and they are normal. The volume key launches Expose and the brightness keys (and others) don't do anything. A reboot helps but only untill the first time I put it to sleep (close/open lid).
Really stumped by this. Recently (I think it was after a MacOS update but I'm not sure) my brightness and volume keys stopped working on my 2011 13" MacBook Air running MacOS 10.9.4. The F keys still work i.e. if I press Fn-F10, I get the expected effect from pressing F10, but if I just press F10, volume remains unchanged (should get muted). Mission Control, Launchpad, and media keys (rewind, play/pause, ff) all work.
Using Karabiner, I checked to make sure the keys generate correct events. They do. Pressing the brightness keys generates 0x3 and 0x2. Pressing the volume keys generates 0x7, 0x1, and 0x0, which are the expected key codes defined in ev_keymap.h, the header file for HID. I can also adjust volume and brightness using the sliders in the appropriate section of "System Preferences."
So volume and brightness itself can be changed. They keyboard keys themselves work and produce correct keycodes. But whatever operating system feature (HID?) that is supposed to read the keyboard input and translate it into commands to the display and sound drivers doesn't work.
I've tried all the obvious stuff (restart, safe mode, toggle the Function key option in System Preferences->Keyboard). I've reset SMC and PRAM. Nothing has worked so far.
The only other thing I can think of is that a while back (before this problem started occuring) I got annoyed by the power button in the top-right corner of the keyboard, which I would occasionally hit accidentally. I searched for a way to disable it, and I think I found something -- now it only does something if it's held for 2 seconds. A quick up-down strike does not do anything. Perhaps in tweaking some setting to achieve this behavior (I don't remember what I did), I screwed up something with the brightness/volume keys, but this screw up only became evident later.
out of the blue about 3 months ago my MacBook(version10.4.11) started refusing to recognize my home wireless. the problem has now reached the point where it AT TIMES will display that the wireless newtwork is on in the toolbar yet the computer will not jump onto the internet. Now it has reached the point where it won't even show that it sees the wireless in the toolbar. I have reloaded all passwords , checked the Verizon wirelss set up, reloaded firefox , checked all firewalls. The wierd thing is that my kids macbook is fine. Mine is the one with the problem.I checked all my settingts to correspond/copy hers and they do. Have zapped pram too. It works fine EVERYWHERE else but home.
Starting about 4 months ago my 3 year-old 2.0GHz Core Duo MacBook's wireless started to not work very well. What was happening is that after starting the computer or waking it from sleep, it was able to connect to my network, but after about 5 seconds it would lose the signal despite being physically very close to the router without anything to block the signal. The problem progressively got worse, and at its worst it was only able to connect about 1 in 10 times. Either it wouldn't find the network at all, or it would find it but couldn't connect because "The connection timed out" or something like that.
I never bothered fixing the problem because my Mac was having a bunch of other issues at the time, so I was just going to fix them all by doing a fresh install of Snow Leopard once it came out.
So 3 days ago I did a fresh install of Snow Leopard (I formatted the harddrive then did a fresh install, not an archive and install). Unfortunately, it only kinda helped the wireless problem: I can now connect half the time rather than 1 in 10 times like it used to be.
I'm quite sure my network isn't the problem because everyone that has used my network in the recent past (which has been about 10 different PCs, Macs, and iPhones) hasn't had any problems. FYI, I have a Linksys WRT54G wireless router.
I've got a macbook pro unibody and basically of the two usb ports. The lower one is working fine but the top one is acting a bit funny. If I put my mouse or graphics tablet in there it doesn't work but if I put my phone or usb drive in there they work perfectly.
After re-installing Lion I've had this very annoying issue with tap-to-click on the trackpad of my MBP. While it seems to work most of the time, I often have to move the cursor away from the button or click on a window as if to make it active in orer for the click to work. A similar problem is occuring in MS Word when I'm going through the spell check process - I have to sometimes click "ignore" multiple times or click somewhere else in that window for the click to register.
I have a macbook pro running 10.6.8 & the cap lock turns on when I press the 2nd bracket key. The cap lock stays on until I press the 2nd bracket key again. It will not turn on when I press the cap lock key or shift cap lock key. I tried resetting all shortcuts in system preferences & rebooting the computer, but it is still the same. I can't use the 2nd bracket key now
Well just installed XP on my boot camp partition. Here is my issue:1. The trackpad doesn't seem to be working properly. It's showing under device manager fine but the 2 finger right-click option isn't working. 2. Is the keyboard supposed to be backlit in XP?3. The sound buttons on the keyboard are not working (f11-f12)
Right i've had my white macbook for a few months now, its at 91 cycles and 99% health... this morning i turn it on and the health has dropped to 86% !? any idea why this has happened, and if theres any way i can get it back up.
I just got a mac book pro and I transferred all my applications from my old g4 but handbrake doesn't work the same or doesn't at all. It takes very long to scan and it doesn't let me rip. I tried the same dvd on my old g4 and it worked just fine so it's not the dvd.
So recently my macbook decided to stop working properly and now the sound cuts in and out. I called up apple and they said to repair it, it was gonna cost upwards of 300 dollars 0_o. So i was wondering is there anyway i can fix it by myself or are there any other ways that i can get it to produce better sound ie speakers that will work of their own soundcard.
I updated to 10.6.4 the other day on my mbp 17" 2.93 mid 2009 model the other day. Since, my computer has developed two problems. first and most annoying, the keyboard doesn't work properly anymore. Shift keys don't work, then they do work. One side doesn't then the other side does. option and command do the same thing. Is this a documented problem? I searched and saw it was prior to 10.6.4, but I never had any problems until this update. Also, when I shut my computer, instead of going to sleep now. It goes crazy, fans jack up to full speed and it gets super hot. Doesn't sleep at all. Funny enough before the update, when i closed the lid the computer would go to sleep and wouldn't wake up.