istat pro processes: "i250"!? -> 20 to 60%!!!???

[florianb]

Machine is a bit slow, specially the start up and the shut down process.
istat pro shows under processes that there is an application called "i250" that is constantly using 20 to 60 %, even though all application are closed!?
Someone showed me how to restart the computer in some basic mode and "i250" disappears!?
Tried to find this "i250" that makes my machine unnecessary work, but there is no application called that name, fully searched the whole computer!?
even changed in the terminal to show all the hidden files and applications, still no result!?
If anyone knows what this "i250" is and how to get rid of it, I am very thankfully!?
Thanks
Florian

[Jaysen]

Do you have a Canon i250 printer?

Googling for i250 seems to indicate that you might. You might try uninstalling any vendor supplied drivers that you may have installed and using the OX default drivers.

[florianb]

Hi Jaysen,
deleted first manual and then with "appdelete" everything that is related i250 but still "i250" uses up to 60%, while starting up even up to 85%!?
And anyway why should a vendor supplied driver work in the background when not even a printer or scanner is connected and no application is running!?
But thanks for the try!
Any other idea!?
Florian

[Jaysen]

I used the word "driver" as a common name for what is more appropriately a daemon. Frequently vendors supply daemon software to monitor the status of a piece of hardware. The software polls the hardware and provides information to the user interface (typically some little widget in the tool bar). This kind of stuff frustrates me to know end as the user rarely gets to opt out of installing the unneeded daemon.

Try this.
Open a terminal
type
cd /etc
grep -ri i250


ignore the lines that end in permission denied and what you have left shoudl be the file that is starting the i250 process. once we know what that is we can see if we can disable it.

[florianb]

I am totally new to working with the terminal.
Therfore please forgive stupidity:
I once copied the code into the terminal and entered and once typed it in each line ending with entering!?
Once its called bash and once grep.
But inside it looks the same.
But nothing else is happening!?
What should I do!?
Thanks thanks thanks
(nice to learn about the terminal)
Florian

[Jaysen]

Everyone is new to something so don't worry about it.

When you open the terminal you should see something like Last login: Tue Jan 1 10:44:20 on console
Welcome to Darwin!
mac:~ jaysen$
The line above, ending in $ is the prompt. What you need to do is type each line at the prompt. Each like should end with a <return>. So it shoudl be something like Last login: Tue Jan 1 10:44:20 on console
Welcome to Darwin!
mac:~ jaysen$ cd /etc
mac:/etc jaysen$ grep -ri i250 .
grep: ./cups/certs: Permission denied
grep: ./cups/classes.conf.O: Permission denied
grep: ./cups/printers.conf: Permission denied
grep: ./kcpassword: Permission denied
grep: ./master.passwd: Permission denied
grep: ./openldap/slapd.conf.default: Permission denied
grep: ./racoon/psk.txt: Permission denied
grep: ./racoon/remote/anonymous.conf: Permission denied
grep: ./ssh_host_dsa_key: Permission denied
grep: ./ssh_host_key: Permission denied
grep: ./ssh_host_rsa_key: Permission denied
grep: ./sudoers: Permission denied
grep: ./X11/xdm/authdir: Permission denied
mac:/etc jaysen$

I expect that you will have a line or two that does not end in Permission denied. That will give us a starting place on permanently disabling the process. You can use the method Miles gave you to fix the immeadiate slowdowns.

[florianb]

Thanks,
Did what you said, but nothing happened!?
I assume I have to be precise, not just regarding the letters but as well regarding the tab!?
(Did it as well once without the Tab, her terminal replies that there is not such a command or that the file cant be found.)
Added a .png what it looks like in my terminal!?
(Looks very small but when you click it it will get big)
Florian

[Jaysen]

the grep line is missing a trailing .

grep -ri i250 .

there is a space between the i250 and the dot. with out the trailing dot grep does not know where you want to look.

[florianb]

Cool, it did something, it tells me something about printcap and canon!?
The application appdelete seems not to be too reliable!?
Will ad a png of the terminal window.
Fells good to get closer.
Thanks
Florian

[Jaysen]

Hmmm...

Looks to me like the printer is not uninstalled. Double check that in the printer control panel.

The next thing is to look for cannon processes loaded at boot time by launchd. In a terminal dosudo launchctl list

Hopefully that will show us a little more.

[florianb]

Thanks for the help, that was the solution, it disappeared!!!
The next highest process shown by istat pro is something called WindowServer!?
Just out of curiosity to further understand my computer:
Is this windows server working for the finder, since it works even when all programs are down!?
Thank You
Florian

[Jaysen]

WindowServer is the portion of OS X that provides the pretty desktop, windows, mouse, etc. The more "eye candy" you have running the higher the percentage of CPU will be used by window server.

Have fun.