Debian Hardware :: Turn Off Screen On Imac G4
Apr 10, 2010
I have Lenny installed on an Imac G4, running command line only. It's primary purpose will be SSH.
I would like to know how I can turn off the screen when I'm not using it. It will be left on running other things for periods of time, and I want to save power. (and the screen)
Since the screen is built-in, it might have a similar solution to what I would do with a laptop. On the other hand, there are no shortcut keys to dim the screen like on a laptop.
Because it is command line mode only, I will need to know what commands to use to dim or shut off the screen, or to configure an auto-off time limit.
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Feb 19, 2015
I have just installed Debian 7.8.0 powerpc on my imac G3 (400Mhz, 256Mb Ram). I had repartitioned the drive with the view of having a dual boot machine, had OS9 installed on partition 1, linux installed on partition 2 and a ext4 data partition and a 1Gb swap partition. After I installed OS9, I ran Debian Installation CD and was successfully installed. Rebooted, got through the on screen text past file system check, then screen went blank. I searched Google and forund that if I ran ctrl+alt+f1 and logged in, then ran lspci, I could get the ID of the graphics. So I did, and:
Code: Select alllspci
...
0000:00:10 Display Controller: Advanced Micro Devices [AMD] nee ATI Rage 128 RL/VR AGP
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Mar 17, 2011
I'm trying to install debian (testing) on my iMac, it boots fine, the keyboard works fine on the first screen, but when it goes to the language selection screen, i can't do anything. I've tried it on graphic install too, and it don't work. Also, i've tried it with an usb keyboard and mouse.
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Jun 24, 2011
I have this lovely iMac sitting in my cellar and I want to revive it. It's objectively beautiful and it has enough horsepower to become my jukebox. Its integrated audio is crystal clear and it has no fans: perfect. I have just one serious problem: I'd like to use it without mouse and keyboard. So what I'd need is a cool app to handle mp3s (with album art and the more cool stuff I can get) AND to be controlled from an Android phone. There's a lot of applications (songbird, xbmc, banshee, rythmbox, others) that have remote controller app on android market but I think they will not run on ppc in their latest versions. Any compiling from source succesfull experience / hints on my little project?
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Feb 10, 2010
I have a iMac G5 only with Gentoo installed on it and every time I turn it on, it plays the startup chime.
I already have my headset plugged in but this doesn't mute the sound.
Is there a way to turn it off using the Open Firmware or, if this isn't possible, could a script do this ?
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May 20, 2011
I have installed Debian a few times now (and other distro's), so I'm fairly used to installing linux. I'm not used to installing it on Apple hardware (back in 2009 on my laptop I had some issues that were solved rather quickly, but that's about it). Now I'm installing Debian Squeeze on a new (well, bought today, but it is the previous model: iMac 11,2) desktop iMac.
Installing goes well (resizing partition, rEFIt, booting Debian 6.0.1a netinstall CD, installing packages etc.) I followed a tutorial [URL] to install grub explicitly with force after installing and running gptsync. Everything went according to the tutorial and I rebooted to be welcomed by rEFIt and then grub: perfect!
BUT when I chose Debian in the grub-selection list, I only see a few lines of starting the kernel, and then my screen goes all black. A few seconds later I hear a sound, and iirc it's the sound of gdm prompting to select a user. I cannot switch to a TTY and I have to use the power-button to shut the system down.
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Dec 17, 2010
I initially installed Debian Lenny on my system but couldn't get sound to work so I upgraded to squeeze hoping that the newer kernel would somehow fix that. Unfortunately, the update caused the screen to flash on and off starting at the login screen - I'd get a split second with the screen on and then it would go off for a second or two. The boot screen still allows me to boot from Lenny's linux kernel, and that still works. I also had this problem when I installed ubuntu on this computer so after some searching around I remembered that adding radeon.modeset=0 as a boot option fixed this. Now the screen no longer flashes, but everything is really slow - I think that disabled graphics acceleration? After some searching around it seems that these problems are probably caused by something called KMS in newer linux kernels but I don't really know.
Anyway, does anyone have any ideas as to how I could turn on graphics acceleration again without having the screen flashing on and off? Or suggestions for making sound work? I think in the past (on ubuntu) I ended up having to enable the proprietary graphics driver, but on the other linux distros i've tried I used proprietary graphics and flash and my computer got slower and slower and started to crash, so I'd rather stick to the open source driver if possible - i don't need really need 3d acceleration. Stability is the reason I switched to debian. My computer is running Debian squeeze amd64, intel core 2 duo e8400, ati radeon 4830, 4 gigs of ram. relevant results from lspci: 00:1b.0 Audio device: Intel Corporation 82801JI (ICH10 Family) HD Audio Controller. 01:00.0 VGA compatible controller: ATI Technologies Inc RV770 LE [Radeon HD 4800 Series] 01:00.1 Audio device: ATI Technologies Inc HD48x0 audio maybe part of the audio problem is that there are two audio devices listed?
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Jul 1, 2015
When I watch any video on YouTube my screen will turn off (no HDMI connection) and then it will turn on after a couple seconds (10 -40 seconds). When I played Borderlands 2 the screen is completely fine.
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Jun 4, 2010
When i turn on my monitor the screen goes blank, but the 'on' button is lit up. Any ideas of what the problem could be?edit: When i turn off and turn on my monitor, it displays what's on my computer for a couple of second and than the monitor turns off again.
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Sep 25, 2015
I decided to update all the software on my computer. Fortunately, it upgraded kernel version 3.14 to 3.16. I was happy to learn that suspend now worked on my laptop by calling pm-suspend, but it did not worked by closing the lid. So I search and found on debian's website that installing systemd and adding some config lines in /etc/systemd/logind.conf would sove the issue. So I followed the procedure and did like instructed, to end up with a computer that boots on black screen.
The last verbrose line I see on boot up is "kvm disabled by bios" and then it shutdown down the screen. The computer works, as I can login and shutdown by doing those operation blindly.
I tried removing systemd but it still does not work. If I use the old kernel 3.14 I can boot without any problem, but if I use kernel 3.16, I boot to a black screen. I remember successfully booting in 3.16 before installing systemd.
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May 16, 2010
I have an imac 27'' i7 and cannot get to install ubuntu.
I always get a blank black screen when during installation even when I select the "safe graphic mode". During installation, the i get some multi-colored straits at some point and then nothing, it returns to the black screen.
I even tried to partition my hard drive with Gparted and got the same blank black screen even with the "safe graphic mode" option.
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Aug 21, 2010
I have come to the conclusion there is no way to adjust brightness for this iMac besides xgamma tweaking.Can someone explain why it is not possible?
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Jul 4, 2010
out of no where it seems ubuntu no longer wants to cooperate when suspending/hibernating. the screen will just turn to a black screen without shutting down. each time i have to maually power down my laptop.
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May 20, 2010
I can't get the Ubuntu 10.4 Live CD for PPC to work on my old 800 MHz flat screen iMac G4. I believe it's supposed to work, but the installation dies with a magenta screen about a minute after selection of any boot option in the yaboot dialog.I tried all the sensible boot choices and options, all with the same result: some trundling of the CD reader, display of the messages related to the ramdisk, more trundling, then a blank magenta screen and no more trundling. The iMac becomes totally unresponsive: no more messages, can't enter any command shell. I get the impression (complicated story) that it begins to install the X server and then aborts.
This iMac has a PPC G4, 512 MB of working memory, and a GeForce2 MX video card with an nVIDIA chipset and 32 MB of video memory. There seems to be no hardware problem: OS-X 10.3 and OS-9 run just fine including wireless networking.
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Apr 26, 2011
I downloaded Ubuntu Lucid...something onto a cd and I booted into it on my iMac G4. It brought me to a screen saying things like live is default press tab for more options etc and when I just press enter, the screen turns white, loads a few things, then it turns blank and after awhile, I hear the Ubuntu startup sound but my screen remains blank.
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Sep 1, 2010
Screen brightness on aluminium 24 inch Intel iMac
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 am using the 64 bit AMD version of Ubuntu.)
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Nov 18, 2010
I've been installing Linux Mint with OSX on a bunch of iMacs, and its been working perfectly excpet for one of the iMacs. The screen will just go black when I boot from a live CD, but I can hear the login sound play. It's strange because all of the other iMac's run the live CD just fine. What could the problem be? I don't know what I can do to troubleshoot this problem.
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Nov 28, 2010
I installed Xubuntu (Karmic 9.10) several times on an old iMac G3 with powerpc processor. Previously I had installed versions as 6.06 and 6.10 succesfully. But no luck this time. All installs were succesfull if alternate cd's were used.
The problem is that when i boot up i see the bootloader 'yaboot' and after that shortly the mouse logo from Xubuntu. After that the screen turns black and the indication light from the powerbutton turns from green to orange, this means no signal (i guess).
I assume that my screen resolution is wrong and cannot be displayed, the Mac uses 1024x768 if i am right.
My question is : How to access any configuration file to change resolution as I believe is the problem?
Edit: Perhaps there is a way to access command line to change config files.. ? Or using a live CD, but this computer is low on memory and has a hard time using live-CD's.
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Jun 26, 2010
I'm trying to install Kunbuntu 10.0.4 on a late 2009 27" Core i7 iMac. Unfortunately the screen is always black while the CD/DVD installer seems to work. All firmware updates neede to the machine have been applied and it is non affected by the known problems of the late 2009 27" iMacs.
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Feb 17, 2011
I'm trying to get my iMac G3 on the internet. I'm running Lenny. I have two options: I could (ideally) get the ethernet to work, or else I could use my phone (Palm Pre Plus) as a modem, which I've done under Ubuntu (the GNOME applet makes it a snap, but I can't figure out what it's doing on the command-line side of things).
Relevant line from lspci:
ryan@dinosaur:~$ lspci
...
0002:20:0f.0 Ethernet controller: Apple Computer Inc. UniNorth GMAC (Sun GEM) (rev ff)
Relevant line from lsusb:
ryan@dinosaur:~$ lsusb
Bus 002 Device 005: ID 0830:0101 Palm, Inc.
...
ifconfig lists only the local loopback and nothing else.I've googled and googled and googled for drivers but can't seem to find any--same for getting the Pre to work as a modem. Like I said, I can get the Pre working flawlessly under Ubuntu but I can't find no matter how much I search the proper way to connect it using Linux.
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Jan 17, 2010
I have install a MBR table partition with 3 partition windows partage et linux And i have install windows7 first no problem but i want to install debian now
and the dvd of debian is no detected
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Jan 2, 2011
I Just Installed Linux (Debian 5.0.7) on my iMac G4 powerpc and almost everything works but the sound.
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Jun 3, 2015
I recently attempted to install Debian 8 on my iMac (late 2011). I partitioned my drive using disk utility to create FAT partitions (100GB for Debian and 2GB for SWAP) and installed rEFInd to boot into Debian.During the installation process I selected the drives I partitioned and set the mount points for each as / and swap.
Everything was fine and installation was successful and was prompted to restart to set up Debian. However when I did Grub did not recognise the Bluetooth keyboard. Unable to do anything it started the "Debian GNU/LINUX option" and loaded into what seems to be the grub prompt/terminal with the following displayed in bold:
[ 3.538535] i8042: No controller found
Loading, please wait...
Fsck from util-linux 2.25.2
/dev/sda5: clean, 112838/6119424 files, 1276387/24455424 blocks
[ 9.123670] [drm:radeon_pci_probe] *ERROR* Radeon kernel modsetting for R600 or later requires firmware-Linux-nonfree.
[ 10.715321] systemd-fsck[363] : fsck.fat 3.0.27 (2014-11-12)
[ 10.715690]systemd-fsck[363] : /dev/sda1: 248 files, 35995/403218 clusters
Debian GNU/Linux 8 iMac tty1/I was able to get my hands on a USB keyboard which works. Obviously I can't boot into Mac now because grub has taken over.
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Aug 2, 2010
I've successfully installed Debian testing (squeeze) on my old iMac G3. I didn't select a desktop environment as a preconfigured package, but only left "standard system utilities" checked.Once I rebooted, I logged in as root (on the command line) and ran "apt-get install xfce4 xfce4-goodies gnome-icon-theme xdm", let all that pull in and installd then rebooted. As the system was booting, I could see all the services starting and whatnot, but when it gets to the line "Starting xdm..." the screen changes to black, but stays black for a good 2 minutes. I tried hitting some keys on the keyboard, as well as typingy login credentials, even though I can't see them, but nothing seems to work. I've tried rebooting several times
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Jul 31, 2011
I have downloaded the latest version of Debian for PPC to run on my iMac G3 600MHz 1GB ram. The problem is, is when it is partitioning the HD the computer just shuts down and restarts from the beginning. I don't understand this. I chose it to erase and use the entire disk. The HD is 80GB. I really want to install this OS!
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Jan 22, 2010
I have a nearly 10 years old iMac at home and installed Lenny on (somehow, I had to thrash Mac OS 9.2 :-P). Everything was successful until now, but on entering "startkde", the screen fills withkpersonalizer: cannot connect to X serverlines. Upon looking at other threads here I tried mdetect, installing X11... but to no avail
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Apr 27, 2015
I initially installed Debian 8 onto my iMac G5 (with KDE), and it would boot to a black screen. I then tried again, and reformatted+reinstalled with only "Standard system utilities", "Print server", and "SSH server".The boot hangs before I get to a log-in prompt. Please see the attached log files I pulled off by booting from the rescue CD option. (I got an error when attaching the log files, so I used tinyupload to upload the files.URL....
Here's some of "syslog"
Code: Select allApr 27 17:37:45 iMacG5 systemd[1]: Started System Logging Service.
Apr 27 17:37:45 iMacG5 kernel: [ 13.137638] Unable to handle kernel paging request for data at address 0x00000008
Apr 27 17:37:45 iMacG5 kernel: [ 13.137645] Faulting instruction address: 0xd000000002314488
Apr 27 17:37:45 iMacG5 kernel: [ 13.137654] Oops: Kernel access of bad area, sig: 11 [#1]
[code]...
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Oct 20, 2010
I have a 27 inch iMac with ATI Radeon HD 4670, and 8GB of Ram. When I try to boot a 64 bit Linux Mint LiveCD, I get a black screen as soon as the X server loads. Are there any, up to date, 64 bit debian/ubunt based liveCD's, That work ob my hardware? In general, what distribution works the best with Apple Hardware?
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Feb 25, 2011
The problem come after i kill the Xorg using the kill command,and the screen turns to black without anything so that i can do nothing. The problem goes on after reboot
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Jun 25, 2010
Is there a command to turn off the screen? What is it?
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