Ubuntu / Apple :: MacBookPro5,5 Random Loss Of Brightness Control?
Jan 31, 2010
My MacBookPro5,5 (also known as the June 2009 Unibody MBP) is having brightness problems. Usually, with OOTB Ubuntu, I can control the brightness flawlessly with the keyboard keys labeled F1 and F2 with no problems once I install the nvidia_bl driver. Pommed improves the experience, giving me keyboard brightness.
Since installing yesterday, the brightness control randomly stopped working. Xev reports that the brightness up and down keys return a keycode (whereas F7 - F12, the playback and volume keys do not; both sets control their respective stuff natively)... this shouldn't happen. nvidia_bl is loading properly according to dmesg; so this problem is baffling.
The Gnome brightness applet does not work, nor does auto dimming. The applet displays a helpfully-apt red circle-with-slash mark. "echo x | sudo tee -a /sys/class/backlight/nvidia_backlight/brightness" still works to change the brightness manually. I can get the Gnome brightness working by manually changing the brightness, killing gnome-power-daemon, and then restarting it via the terminal in no-daemon mode.
I've installed Ubuntu 10.10 on my Macbook Pro 6,2 and try as I might can't change the brightness of my screen whatsoever. I cant use "echo 100> /sys/devices/virtual/backlight/nvidia_backlight/brightness" because the folder does not exist. Pommed, when run using "sudo pommed -d" complains with "Failed to access brightness node: No such file or directory".
I have the mbp-nvidia-bl driver installed *only* (removed nvidia-bli because I had seen in other threads that the two conflicted). I've tried searching the forums and the web but nothing is helping me so far. Biggest roadblock for me using ubuntu is having the headache of using a much to dim screen(or currently a much too bright screen)
According to the Community Documentation for a 6,2 running Maverick, the LCD brightness just "Works." I have mbp-nvidia-bl-dkms and pommed installed, but this has never worked for me.
I have a white Macbook 7,1 and am running 11.04 beta 1. I have worked out almost everything, sound being the main thing that didn't work. The one thing I don't have working is my brightness control -- my laptop always displays at 100%. I tried installing pommed and the dkms package from the Mactel PPA, but nothing works yet. The wiki hasn't been updated to 7,1 for Maverick, let alone Natty.
I Install Ubuntu 9.10 and I can't control Brightness, show brightness popup (Fn+F5F6) but screen brightness don't work, I install NVIDIA Driver Linux-x86_64 version 190.53, modiffed xorg.conf.
System: MacBookPro5,3 with ubuntu 9.10 kernel: Linux ubuntu 2.6.31-19-generic-pae soundchip: nVidia Corporation MCP79 High Definition Audio (rev b1), in windows it reports: Cirrus Logic CS4206A (AB 75). Cirrus Logic now is part of nvidia.
I've added ppa mactel repository. and tried the procedure described at: [url]
It still doesn't work. By compiling from alsa from source, it seems worse, the sound preference even couldn't pick up device. Also in current /usr/share/doc/alsa-base/driver/HD-Audio-Models.txt.gz. I could not find the module name for this nvidia or CirrusLogic device.
I'm having problems keeping audio working. Using Sparky with 3.16.0-4 kernel on a homebuilt PC. AMD A10-7850K CPU on a Gigabyte F2A88FN-WIFI mobo.
I'm using a set of Logitech Z-5 USB speakers and I repeatedly lose all audio output. To get it back I need to do 1 or all of these steps:
1) Unplug the speakers 2) Kill all processes that may be producing audio (Chrome beta, IceWeasel, Exaile, etc.) 3) Start Alsamixer and select another source in sound card list then reselect USB card #2. 4) The weird one - Remove and then re-add the volume applet that I like to have in the panel. When I lose sound th slider gets "stuck" and will not move. It will not recover.
I may need to repeat this several times but it will come back. Not immediately after any step but after a few attempts it just begins working as long as nothing is trying to produce audio at the moment. Sometimes Alsamixer says that my USB Card has no controls when I reselect it, not every time though.
Most of the time if I have more than 1 source open at any time it is likely to die again, for instance I like to stream Google Play Music. If I pause that but leave it open, then try to watch a Youtube video or other source I will either get no audio from either source, or lose the streaming audio source when I try to restart it. Going through the above routine 1 or more times usually restores it.
I have created asoundrc.conf file to tell system to use USB audio as described here -> [URL] ..... In my case USB is # 3 in the list. So this is my file:
Code: Select allpcm.!default { type hw card 2 } ctl.!default { type hw card 2
I have been having this problem for about two weeks now where Debian's network and internet connection randomly fails. It works perfectly fine and hosts all the services I need for a while, and then without warning all network connectivity fails. I can't ping any other network device. Regardless of how much I try to fix it, the only thing that works is restarting the computer. First, the server went 7 days without a problem; then 5 days; now it lasted 2 days. Judging from my Teamspeak server logs, it crashed today at 12:31. I grep'd through my log files and found this information:
whenever I type certain things (backspace when nothing left to delete, tab to autocomplete in terminal, etc.) the screen will randomly go dim and then go back after a few seconds. it also happens when I try to use the rain or write with fire options.(though this might be normal)
I am currently using Windows 7 but I would really like to install the new Ubuntu, what bothers me is that I tried using Ubuntu 9.04 few months ago and I had troubles changing the brightness (Toshiba L40). I have searched in the forum and it appears that there are quite some people with the same problems, of course fixes are offered but as at least some basic kernel knowledge is required I am in no position to follows the proposed steps. Since this is one of the determining factors whether to stay with Windows or go to Ubuntu I was wondering whether this problem is fixed in 10.04 or not?
P.S. I haven't tried messing with the kernel because I have only one laptop and I am afraid to lose the information on it.
In the past few days Ive noticed a lot of updates. Yesterday morning several times I went to click on items on my desktop and I couldnt. I thought it was just my batteries getting weak. Yesterday afternoon it got so bad I couldnt click on anything for hours at a time. I could only power offIve been reading lots of forums and threadsd there are lots of possible problems to this but they all come down to xorg file and usb issues.
An example of one possible problem: When I have the system log open I can not move the app around, make it bigger or smaller, I can only scroll on the right pane and have to use the mouse keys to navigate the left pane. And if I want to shut the app down, sometimes I can use the ctl+F to close it but sometimes I cant.After I shut the app, any app that is, the mouse pointer turns to |< and I cant click on anything for 5 min to 5 hours. It was suggested to run sudo dpkg �reconfigure �phigh xserver-xorg but when I did I didnt see anything visually or in the terminal occur.
I am using Samsung N150 and ubuntu 10.10 is installed in it. There is problem with brightness control i.e., I cannot control my brightness by up & down keys. I made settings such as:
I Add the repository to the sources list and enable it sudo add-apt-repository ppa:voria/ppa Perform complete system update sudo apt-get update && sudo apt-get upgrade it may take long time depending the internet connection than I installed packages "samsung-backlight" and "easy-slow-down-manager" sudo apt-get install samsung-backlight easy-slow-down-manager
Also I made changes in brightness setting in during the boot i.e set to user control instead of automatic. But after doing all these stuff still my laptop brightness not control by fn + up/down keys.
I added the Brightness Applet to the top panel, but when I change the brightness, nothing happens. D:I can't stand this, it's like my screen is stuck on supa-bright and it's hurting my eyes. When I load my PC up in Windows, the brightness control works just fine. But it doesn't seem to work on Ubuntu.
I have an Intel GMA 500 and driver support is iffy plus when I installed ubuntu netbook remix, it only runs in desktop mode not netbook mode. Plus I cant control the brightness with the MSI hotkeys.
I got a new Sony F series laptop and struggled thru getting the video card to work, the wireless card to work, and the volume to work on 9.10. The brightness controls have stumped me though. The screen is on full bright and the brightness controls (FN+F5 & FN+F6) make the applet display change but the actual screen brightness does not change. I have also tried the brightness applet in the panel and that also has no effect on actual screen brightness.
I am running Karmic (9.10) on my macbook air (2,1) and although many things work fine (I wrote about it here:[URL]) one of the last things that doesn't work is setting the screen brightness. The FN-F11/F12 combo does bring up the brightness adjustment notification window (top right) and I can change the setting, but it has no effect UNTILL I reboot or suspend to RAM and reboot.
A related issue is that the brightness doesn't automatically adjust to the surrounding brightness.
I've been using Ubuntu 10.10 64-bit on my MacBook Pro 5,5 for about a week now. And I've noticed that the screen brightness adjustment does not work. When I click the F1 and F2 buttons I get the notification that it's changing but it doesn't actually change it. So I added the brightness adjustment to the panel and it won't let me move the toggle thingy. Has anybody else had this problem? All my other F keys work fine.
I originally installed Maverick on my Macbook 5.1 using rEFIt to dual boot. For some reason, after installing Compiz my screen brightness functionality stopped working. It was permanently 100%. I thought that upgrading to Natty might work, but no luck. So far I've tried changing the brightness manually in terminal and in power-management, editing the grub file and also reinstalling compiz, all to no avail. Trying to alter brightness using the fn keys displays the brightness panel in the top right, and it decreases in value as it should, but the screen stays bright. The brightness settings work fine when I boot to Mac.
I have an issue with Debian 7.8 (wheezy) on my laptop. I've had to reinstall Debian on my laptop and since then I've had issues getting brightness controls to work properly.
It's a Core i3 370M processor with Ironlake graphics, I've had this issue before with Ubuntu and I sought [URL] ..... I've tried the steps that worked for Ubuntu (thinking they'd be the same as they're both Debian based) and it hasn't worked.
What should I try to get it to work? Since I have updated my grub config (as per the Ubuntu fix), brightness doesn't work at all and my screen now tiles ever so slightly when moving the cursor from side to side. I'll revert those changes if need be or if this issue cannot be resolved.
I've tried to install the Intel graphics drivers from 01.org, however I get an issue with libglib dependencies not being satisfied ( libglib2.0-0(>=2.37.3) ) that how to resolve.
I have F15 fresh install on Samsung Q45. The brightness function key is recognized but doesn't really increase or decrease brightness. It is set to maximum.There was a workaround in F14 for same problem.
I just finished installing Slackware64 13.37 on my Sony Vaio PCG-7153L, and I'm having issues controlling the LCD brightness of the laptop. It still has the stock Slack kernel 2.6.37.6 SMP The brightness controls worked on Fedora 12-14, as well as the Ubuntu 10.04 live disc. I checked /proc/acpi/, but there's nothing in there to control brightness. I reloaded the sony_laptop kernel module, and from dmesg I get:
Code:
sony-laptop: brightness ignored, must be controlled by ACPI video driver From the Ubuntu bug [URL] and the Red Hat bug [URL] it looks like they've already dealt with this problem. However, as I said earlier, my laptop worked fine with Fedora 12-14.I know Slackware does minimal fiddling with the kernel, so I'm thinking this might be an upstream kernel bug...
I am having a weird issue where my brightness keys on my macbook v4.1 work, but for some reason the brightness notifications have stopped working. I can clearly press the buttons to reduce and increase the brightness, but no notifications. Network manger, sound, firefox, amarok notifications work, but not brightness. It did popup, but I am note sure when or what update broke the notifications.
I'm running 2.6.35 on a macbook Air. Since Hal is being deprecated I got rid of it but now I cannot control brightness with the keyboard.Looking at the code on gnome-power-manager, if it doesn't find hal it defaults to xrandr, but I couldn't find a way of controlling brightness with xrandr. Also, I don't see any keybindings on XF86MonBrightness{Down,UP} with gnome-keybindings-properties.I'm loading mactel's nvidia_bl module which creates /sys/class/backlight/nvidia_backlight and from there I can just adjust brightness by editing the corresponding file.
I have a new netbook, a Lenovo Z360 and everything except one thing works "out-of-the-box". The one thing is the brightness control. I think it's the same bug like in https://bugs.launchpad.net/ubuntu/+s...ux/+bug/538256 But I don't get anything in dmesg, it's just not working. setpci -s 00:02.0 F4.B=?? don't work, too. nomodeset acpi_backlight=vendor don't work, too. I'm using Fedora 14 with KDE, 2.6.35.11-83.fc14.i686 and the intel drivers. Maybe somebody knows a workaround, usually brightness control works very well in the newer distributions. I had like 4 notebooks all with Fedora installed and brightness works, especially with the open source intel drivers I didn't expect any difficulties.
I have searched online with no success. The brightness control is working fine on my laptop. Problem is that the bars don't get rendered on screen. Instead I get like a static white line on screen everytime I press the brightness control. On boot however, I can see the correct bars. It is once I start my xsession, the bars do not show up. Here are my specs:
I bought a new computer, pretty awesome machine, AMD FX6300 with a Radeon 260X graphics. Along I bought a new Led monitor AOC with DDC/CI capability.
It is my understanding that with the DDC/CI, monitors can have their brightness controlled just like laptop screens do, but better software controlled.
This is something I have done before with nvidia graphics, the open drive had the control and the proprietary only needed a small config setting. This was done however in a dekstop iMac, the screen also LED and HDMI.
So I just freshly installed debian jessie in this setup, it seems the open source driver does a pretty good job, but still missing the brightness control and audio through HDMI doesn't work either.
I was just about to re-install Ubuntu to dual boot with OS X on my 24 inch aluminium Intel iMac. Then I remembered the reason I got rid of Ubuntu the last time... screen brightness.
It is a known fault of these machines - the default brightness is set far too high. Sometimes it hurts the eyes. There is an application I have to use with OS X called 'shades'.
If I instal Ubuntu in VirtualBox I can still use 'shades', but when I run it natively as a dual-boot os, I do not have access to the 'shades' app so the screen is far too bright to use for any reasonable length of time.
Is there a workaround for this, without having to do something on every log-in?
I've just installed the Nvidia drivers on my Debian, however, after i do it, the laptop brightness control doesn't work anymore... When i press the keys, i see the brightness bar, however, the brightness stays at maximum. I've used the following commands to install the drivers.
