Yes /dev/null not making my fans kick in!!

I dont hear my fans kick in when i use the yes > /dev/null
i run it for a minut or 2 and it gets to about 90c and still the fans dont kick in... can i run it for longer without damaging the machine...
and what if they still dont kick in.. what should i do then..
thanks in advance..

if you check out http://forums.macrumors.com/showthread.php?t=238961 someone made an interface to interact with the fans... I ran it and got at idle:
Fan #0:
Actual speed : 1000
Minimum speed: 1000
Maximum speed: 6000
Safe speed : 1200
Target speed : 1000
Mode : auto
Fan #1:
Actual speed : 1004
Minimum speed: 1000
Maximum speed: 6000
Safe speed : 1200
Target speed : 1000
Mode : auto
I then ran yes > /dev/null twice, re-ran the program and got:
Fan #0:
Actual speed : 3698
Minimum speed: 1000
Maximum speed: 6000
Safe speed : 1200
Target speed : 3667
Mode : auto
Fan #1:
Actual speed : 3695
Minimum speed: 1000
Maximum speed: 6000
Safe speed : 1200
Target speed : 3667
Mode : auto
this time my fans got loud, temp went to 91C before stabilizing at 89C at which point the fans got soft again... any ideas? the fans work- both of them... but the temp is still high.. what do I do?

Similar Messages

Reinstall latest smc update - smcfancontrol made the fans kick in @ 100°C!!

Hello!
I have two questions:
1. How can I reinstall the latest smcfirmware update? OSX tells me its not necessary, thus it doesnt want to. But I want to. How can this be done? In terminal? How to?
2. SMCfancontrol (you know, the little proggie that lets you set the minimum speed of your fans), caused my fans to kick in waaay too late. I tried the yes > /dev/null/, and the fans kicked in at 100°C only. Thats wa too late, and surely not what should happen. I remember, the latest smc update just made the fans kick in even at 60-70°C.
I uninstalled the SMCfancontrol, made PR-Ram reset, and the SMC reset (Holding Start button for 10sek while without battery nor cable), Repaired the permissions.
Still, no luck. I know, my fans and the sensors work fine, as Ministat2 and Coreduotemp work just fine.
Whats wrong, what can I do?

1. How can I reinstall the latest smcfirmware update?
OSX tells me its not necessary, thus it doesnt want
to. But I want to. How can this be done? In terminal?
How to?
As far as I know, you can't. If you think the SMC firmware may be corrupt, you'll have to ask AppleCare.
2. SMCfancontrol (you know, the little proggie that
lets you set the minimum speed of your fans), caused
my fans to kick in waaay too late. I tried the yes >
/dev/null/, and the fans kicked in at 100°C only.
Thats wa too late, and surely not what should happen.
I remember, the latest smc update just made the fans
kick in even at 60-70°C.
SMCfancontrol doesn't affect when your fans kick in. Since the firmware update, the fans run all the time. SMCfancontrol simply tells them how fast to run with low load/temperature.
If your fans are off until 60C then there is a problem with your firmware. Call AppleCare. After the update, as I said, the fans should be running at 1500RPM at all times, increasing when system load or temperature goes up. I know mine hit 6000RPM when the system load hits 90% or the temperature hits 60C, whichever is first. The 'yes' test causes both cores to run at 100%, which means the fans should be maxed out pretty much straight away.
Whats wrong, what can I do?
Call AppleCare.

I bought a ibook G4 2005 refur-ed it is making a fan running noise when I listen to sample music on line and it will not stop until I reboot.. What could that be also bottom of computer very hot?

I bought a ibook G4 2005 refur-ed it is making a fan running noise when I listen to sample music on line and it will not stop until I reboot.. What could that be also bottom of computer very hot?

When my iBook got hot like that, I would take a break and let it cool down.
You can buy laptop desks that have USB powered fans on them, such as the Targus Chill Mat.

Yes Verizon has contacted me by phone. I never scheduled a call time nor did I call them. They also are not making it easy to contact them through email. I need to discuss a way to assure that my phone is never called again during work hours without a

Yes Verizon has contacted me by phone. I never scheduled a call time nor did I call them. They also are not making it easy to contact them through email. I need to discuss a way to assure that my phone is never called again during work hours without a prearranged meeting. I will not speak on the phone nor use a live chat. I want email as I want this documented offical and no other means offeres me that assurance. I'd also like to discuss comensation for being harrassed with phone calls.

Well if you pay your bill the calls would not happen.
You need only tell them not to call you during working time.
The Fair Debt Collections Practices Act states you must tell them it is not convenient.
Now if marketing calls you can opt out at the Verizon web portal under your My Verizon account.
You will not get compensation for them to call you. Nice try.
However they could just shut your phone off and then you will call them.
Email is not an option.
Good Luck

Re: Equium - Not booting up only the fan kicks

Hi, I need some assistance with my laptop.
The power, and the battery light comes on when I switch laptop on at the mains.when I go to switch the laptop on only the fan kicks in it's not booting up at all.
Can anybody help?
Thanks
dean

Hi
What Equium notebook you have exactly?
Its really hard to say what is causing this issue but maybe its a hardware problem and you need professional
But at first try this workaround:
Remove the battery and AC/DC adaptor, then wait up to 1 hour. Next connect both devices again and try to start the notebook. Maybe it will work
If not you should contact the nearest authorized service provider. The technicians should check your notebook for hardware problems.

[solved] systemd times out waiting for dev-null.device on encrypted fs

I have a relatively new install of Arch on my laptop. The relevant sections of the drive setup are a luks encrypted root device (with associated unencrypted /boot), and a large ntfs device encrypted with truecrypt. That contains my home directory, which is shared with the Windows 8 dual-boot on the machine.
I have all this mounted on boot, so my typical usage is to enter my password for the encrypted root, followed by the password for the truecrypt-encrypted data drive, then normal login.
This has been working fine for a couple of weeks. This afternoon I rebooted my machine from Windows to Linux, at which point the secondary encrypted drive failed to mount. The root device mounts fine.
On further examination, in the form of journalctl -xb, I'm getting the following errors after mounting the encrypted root device:
Feb 12 21:29:54 kafka systemd[1]: Job dev-null.device/start timed out.
Feb 12 21:29:54 kafka systemd[1]: Timed out waiting for device dev-null.device.
-- Subject: Unit dev-null.device has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/li … temd-devel
-- Documentation: http://www.freedesktop.org/wiki/Softwar … e9d022f03d
-- Unit dev-null.device has failed.
-- The result is timeout.
Feb 12 21:29:54 kafka systemd[1]: Dependency failed for Cryptography Setup for cryptdata.
-- Subject: Unit [email protected] has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/li … temd-devel
-- Documentation: http://www.freedesktop.org/wiki/Softwar … e9d022f03d
-- Unit [email protected] has failed.
As my root home directory is on the root filesystem, I can still log in as root. If I try to mount or unmount the truecrypt device (located at /data) the command hangs. After removing "auto,x-systemd.automount" from that device from /etc/fstab and rebooting, I have a significant delay at boot, but I can then mount the /data device as normal.
I can't find anything related to this either here or on Google. Any ideas?
Last edited by tealeaf (2014-02-13 12:01:55)

WonderWoofy wrote:A bit OT, but I just want to mention that having your $HOME on ntfs is probably not the best idea either. It may work, but because it is not a POSIX compliant filesystem, there is a good chance you might run into some issues.
Thanks for the warning. Sadly, as there are applications I need for work that only run in Windows, I need to dual boot this machine with Windows 8.1. This is the best option I can find for sharing my home directory, which is also a necessity due to the amount of data I have to share between the systems. I would much rather trust to ntfs-3g-ar and its UserMapping (and all the fiddling with ACLs that I had to do) than to the Windows ext2 drivers I can find. They all seem to be several years out of date. Linux is much better at talking NTFS than Windows is at talking EXT. (To be honest, I'm actually quite impressed with Windows 8 since the upgrade to 8.1. As a long term Arch user and a fan of tiling window managers it's interesting to see Windows moving in the right direction. )
With 'permissions' in the /etc/fstab and the .NTFS-3G/UserMapping file in place it works almost seamlessly. (It took a lot of tinkering with ACLs in Windows and Linux, but it's working very well now. One tip that I'll write here in case it's of use is that you want the last line of the UserMapping file to be a 'generic' mapping. When I didn't have that there were very strange things going on.)
The only two minor problems I have now are:
1) A few applications don't like FUSE filesystems. Steam worked for a while and then broke; reinstalling it failed at every stage. When I checked, it seems that FUSE is a known problem for Steam. (I don't think it's restricted to NTFS.) My response to that was to create /home/.local/$HOME on my root (ext4) filesystem and symlink out to it for troublesome applications.
2) There are a few characters for filenames that Windows doesn't like, making those files inaccessible in Windows. (Colons are the major culprit.) They're usually quite easily renamed. (The exception being my .maildir folder, which I have had to duplicate natively in cygwin.)
Neither of these are anything more than minor niggles. I appreciate the warning, though.
Having said that, if you have an alternative that lets me share a truecrypt-encrypted drive between Linux and Windows that is better than the NTFS-3G approach, I'd love to hear it for future reference.

Choppy performance when fan kicks in

Now that it's summer and getting warmer in my studio, I notice that the FCP playback gets choppy and generally gets weird as my G-5's fan kicks in. Does this make sense? It is making me a bit anxious. Despite my efforts to cool things off it reaches about 80 in our workspace in the heat of the day.

There is a nifty application called Temperature Monitor you may want to look into. It reads all the temp sensors in your machine and you can keep an eye on the trends. It is a great monitoring tool when you want to experiment with alternative cooling strategies.
In the FWIW category, I've found a simple smalll fan blowing air around my 17" Powerbook will keep the temps 10 degrees F cooler (or more) on hot days. Often enough to keep the fans from kicking in and from getting so hot I end up sweating all over the keyboard.
Also, do a search for CHUD in the developer forum. It is another nifty app that allows you to set your processors to sleep when not in use. It has a big effect on heat generation. It was a life saver with some of the 'aircraft jet fan noise ' problems with earlier tower models.
Good luck.
X

/dev/null link destroyed. Need help

I have Forms 6i applications deployed on the internet under Oracle 9iAS 1.0.2.2 on Solaris 2.9 64 bits OS.
I am starting the 9iAS running the command "apachectl startssl" as 'root' because that's the only way I am able to grab port 443. However as soon as any output is redirected to /dev/null, the /dev/null link is broken and replaced by a /dev/null file writable to only by root.
My question is what can I do to prevent that?

Steve Walter (guest) wrote:
: The "Deploying Applications on the WEB" docs are good for
: release 2.1, but lack all detail in 6.0. Does anyone have a
: guideline for building a forms cartridge in 6.0. I've
followed
: the 2.1 documentation, knowing it is a bit different, but I
: still can't get it to work.
: Thanks for any and all help.
: Steve
The error I recieve is Can not service this request, Please try
again later
null

HT3964 How do I stop my Macbook from overheating and making a fan noise?

My Macbook Pro 17 Inch keeps overheating and making a fan noise after I use it for... say... an hour.
I use Windows on my Macbook, is this related to my problem? If not, do I need to get my fan replaced?
It gets annoying whenever I play a game, and then suddenly my Mac goes to sleep for no reason (probably due to overheating).
The fan noise is kept to a minimal when I use a web browser, or listen to music, but it goes up when I start an application.

Since overheating is something the computer tries to prevent, it will shut down if the temps get too hot, thus your experience is not overheating.
You can have a look at Activity Monitor (Menu Bar > View > Show All Processes) and then sort by CPU to see what the culprit is during downloading.
A hot Mac is not that big of a problem, the fan takes care of the heat and if you do not mind the noise, then that is it.

/dev/null issues

Hello All,
I have an issue since the last couple Leopard updates that I can't seem to get a handle on and think I am out of my element here so any advice appreciated.
I run 2 scripts every 10 minutes for the past 3 years and always had good results with them.
In Cronnix I have them setup as "pathToScript" >/dev/null 2>&1
One sends an email and the other runs a php cron. Both work well even now.
The only issue is that I now get an email saying:
/bin/sh: dev/null: No such file or directory
When the scripts run there is an entry in Console :
5/17/09 3:16:23 PM MyMac Ambiguous output redirect.
Thinking there is a directory missing I listed /dev/ in terminal and did receive the list of dev contents... but no null directory in the list.
I viewed the hard drive using invisibles and saw that /dev existed, but it appears when viewed as an alias, don't know if that is normal or not. I cannot move or delete the alias due to not enough permissions (might be a good thing lol)
I chowned dev/null to root:wheel from googled advice, and got no errors either.
My problem is that I don't want these emails, and wonder what is wrong with the way /dev/null is working , or not working now, and how to fix it. Can I rebuild dev/null? or fix it otherwise? Is there a fix all commend for this phenomena?
Any advice is greatly appreciated.
Jamy
Message was edited by: Jamy

Was I supposed to get something?
It depends what your script outputs. The idea was to have bash handle the output redirection to see if it you could suppress the ambiguous output redirect message. If you included the >/dev/null 2>&1 part, then I would expect to see no output. My guess was that maybe connix is using tcsh. The following tests seem to support that theory:
<pre style="border: 1px solid #ddd; padding-left: .75ex; padding-top: .25em; padding-bottom: .25em; margin-top: .5em; margin-bottom: .5em; margin-left: 1ex; max-width: 40ex; overflow: auto; font-size: 10px; font-family: Monaco, 'Courier New', Courier, monospace; color: #444; background: #eee; line-height: normal">tcsh -c 'echo hello >/dev/null 2>&1'
tcsh: Ambiguous output redirect.
sh -c 'echo hello >/dev/null 2>&1'
(no output)
</pre>
Cole

How do i get my computer to stop making a fan noise

how do i get my computer to stop making a fan noise?

Is the computer hot? If so then do this:
Open Activity Monitor in the Utilities folder. Select All Processes from the Processes dropdown menu. Click twice on the CPU% column header to display in descending order. If you find a process using a large amount of CPU time (>=70,) then select the process and click on the Quit icon in the toolbar. Click on the Force Quit button to kill the process. See if that helps. Be sure to note the name of the runaway process so you can track down the cause of the problem.
If the computer is not hot, then try resetting the SMC - Intel-based Macs: Resetting the System Management Controller (SMC).
Finally, try running diagnostics:
Using Apple Hardware Test
OS X Mountain Lion- Use Apple Hardware Test
Intel-based Macs- Using Apple Hardware Test
MacBook Air- Using Apple Hardware Test

/dev/null changes result, why? ( How to know if svn repository exists )

Hi,
Because I am writing last few weeks some scripts for a project, I do want to put those under svn ( subversion ). As a scripting exercise I want to be able to create Repos and project folders in one go and add changes to the repo's svn conf files.
I want to check if there is already an existing repository and if the name=passw line is already added to the passw db.
I did use:
svnlook youngest /Volumes/Development/_svnRepo/SSHToolNew 2>&1 | grep "No such file or directory" -c
to check for the error message returned by svnlook
svnlook: Can't open file '/Volumes/Development/_svnRepo/SSHToolNew/format': No such file or directory
and want to continue doing my stuff when the result is bigger then 0, otherwise create the repo first with some options.
With the following info
/Volumes/Development/_svnRepo/SSHTools exists
/Volumes/Development/_svnRepo/SSHToolNew doesn't exists
using ( typed in the sh )
svnlook youngest /Volumes/Development/_svnRepo/SSHToolNew 2>&1 | grep "No such file or directory" -c
1
echo "rv:" $?
1
gives as result 1 in the shell and when using echo "rv:" $?
however
svnlook youngest /Volumes/Development/_svnRepo/SSHToolNew 2>&1 | grep "No such file or directory" -c &> /dev/null
echo "rv:" $?
0
gives 0 as result.
And when the folder do exists it return the opposite!?
Just to understands the happening. Why the difference with &> /dev/null ?
What do I mis here?

Hi Thanks you for your reply,
I want that the result goes into a var so that I can compare it in an 'if' statement.
If I leave & out then I get the following same result
bash-3.2$ svnlook youngest /Volumes/Development/_svnRepo/SSHToolNew 2>&1 | grep "No such file or directory" -c > /dev/null
bash-3.2$ echo "rv: "$?
rv: 0
It should be one ( 1 ) because the result count is one. Or am I wrong?
So basicly, why is it changing the result? or is $? not the result of my line?
What is the best way to check if f.e a command is failed like the one I use in an if statement? Can I move the result directly into a var, something like?
bash-3.2$ svnlook youngest /Volumes/Development/_svnRepo/SSHToolNew 2>&1 | grep "No such file or directory" -c | MyVar=$? ( or whatever needed )
Thanks again

Problem with /dev/null

Hi,
I faced this problem twice and I do not know how to reproduce it.
There are 2 log files ERRORFILE and EVENTFILE.
I have a script as show below which takes a backup of the log files,every hour. Processes are continously writing to the log files. Occasianaly(twice till now), I see that the inode of the ERRORFILE and EVENTFILE gets changed, due to this no precesses can write to the log file and they need to be restarted to initiate logging. Is there something worng with the command "cp /dev/null".?
TIME=`date '+%Y%m%d_%H%M'`
cp $ERRORFILE $ERRORFILE:$TIME:BACKUP
cp $EVENTFILE $EVENTFILE:$TIME:BACKUP
/usr/bin/gzip $ERRORFILE:$TIME:BACKUP
/usr/bin/gzip $EVENTFILE:$TIME:BACKUP
cp /dev/null $ERRORFILE
cp /dev/null $EVENTFILE

Hi,
Just to make sure we do not deviate the topic to "/dev/null" getting corrupted.
The actual concern is that the inode of the log files got changed, even though there was no "mv" or "rm" operation performed on it.
The problem for which I need your assistance and expertise is to know whether in any scenario a "cp" will change the inode number, say for example, when we are coping from a device character file(/dev/null). I have pasted the snippet of the script below. Could there be some erroneous condition which could lead to such a problem, say for example gzip returned a error or something like that.
TIME=`date '+%Y%m%d_%H%M'`
cp $ERRORFILE $ERRORFILE:$TIME:BACKUP
cp $EVENTFILE $EVENTFILE:$TIME:BACKUP
/usr/bin/gzip $ERRORFILE:$TIME:BACKUP
/usr/bin/gzip $EVENTFILE:$TIME:BACKUP
cp /dev/null $ERRORFILE
cp /dev/null $EVENTFILEThanks

Can I /dev/null my access log while running?

I have a Directory Server 5.2 system running
on Linux Red Hat.
My access log is huge - 1.7 G in 2 days, using
default logging.
Can I manage this by copying the access log
to another directory, then
cat /dev/null > /sunusr/slapd-xxxx/access
w/o negative effects ?
If I can , this will save me much grief,
JYard
UCLA

You can cat /dev/null, but you should not need to. You should be able to configure, the size, the rotation time, and the max file system utilization. You can actually have logs that do not exceed 10MB or whatever you want. Go to the configuration/logs tab in the console and set it any way you want.

S10u 7 - smpatch in BE fails - patchadd: /dev/null: cannot create

Solaris 10 5/09 s10x_u7wos_08 X86 with ZFS Root + Zones
smpatch on non active BE with Zones fails:
# smpatch update -b s10x_u7wos_08p1
Ckecking the currently running boot enviornment ...
Currently running boot enviornment name is [s10x_u7wos_08p].
Checking the destination boot environment [s10x_u7wos_08p1] ...
Installing patches from /var/sadm/spool...
Copying the currently running BE into inactive BE [s10x_u7wos_08p1] ...
(This process will take some time, please wait a moment.)
Installing update(s) onto the inactive boot environment [s10x_u7wos_08p1] ...
Failed to install patch 119901-07.
Utility used to install the update failed with exit code 1.
System has findroot enabled GRUBNo entry for BE <s10x_u7wos_08p1> in GRUB menuValidating the contents of the media </var/sadm/spool/119901-07.jar.dir>.The media contains
1 software patches that can be added.All 1 patches will be added because you did not specify any specific patches to add.Mounting the BE <s10x_u7wos_08p1>.Adding patche
s to the BE <s10x_u7wos_08p1>.Validating patches...Loading patches installed on the system...Done!Loading patches requested to install.Done!Checking patches that you spe
cified for installation.Done!Approved patches will be installed in this order:119901-07 Preparing checklist for non-global zone check...Checking non-global zones...This
patch passes the non-global zone check.119901-07 Summary for zones:Zone master-templateRejected patches:None.Patches that passed the dependency check:119901-07 Zone mast
er-template-cloneRejected patches:None.Patches that passed the dependency check:119901-07 Patching global zoneAdding patches...Checking installed patches...Verifying suf
ficient filesystem capacity (dry run method)...Installing patch packages...Patch 119901-07 has been successfully installed.See /a/var/sadm/patch/119901-07/log for detail
sPatch packages installed: SUNWPython SUNWTiff SUNWTiff-devel SUNWgnome-img-viewer-shareDone!Patching non-global zones...Patching zone master-templateAdding patches.
..Checking installed patches...Patchadd is terminating.Done!Unmounting the BE <s10x_u7wos_08p1>.The patch add to the BE <s10x_u7wos_08p1> failed (with result code <8>).
/usr/lib/patch/patchadd[4]: /dev/null: cannot create/usr/lib/patch/patchadd[6]: /dev/null: cannot createsort: insufficient available file descriptorsPatch 119901-07 fail
ed in non-global zone SUNWlu-master-template.Patch 119901-07 wasn't installed in zones:master-template-clone
Failed to install patch 119901-07.
ALERT: Failed to install patch 119901-07.
Any ideas?
TIA.
/phs
Peter H. Seybold

Post your question in the Developer Forums:
http://discussions.apple.com/category.jspa?categoryID=164

Yes /dev/null not making my fans kick in!!

Similar Messages

Maybe you are looking for