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Linux From Scratch This Forum is for the discussion of LFS.
LFS is a project that provides you with the steps necessary to build your own custom Linux system.

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Old 05-27-2007, 06:58 AM   #1
help_a_newbie
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Unhappy System crash when the screen turns off


Hi,

I really need help here coz I can't go on building the system

When I leave my computer for a long time, the scren turns off and the system seems to be crashing (I tried to press everything but it didn't work). Actually, the system crashed when I left it compiling gcc (it took too much time). How can I avoid my screen to turn off?

Thanx, every comment is accepted.

 
Old 05-27-2007, 07:53 AM   #2
druuna
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Hi,

I've never had this problem myself, but here are a few pointers you could try:

- I sounds like an apm, dpms and or acpi problem. Did you try starting (the liveCD) with the noapm / noacpi / nodpms option?

- Which liveCD version are you using? Maybe a slightly newer/older version could help. I googled and found out that someone had the same issue as you have. He used 6.2-5, using 6.3-pre1 or 6.2.1 solved his problem.

- (Semi serious) You could open a second terminal and keep your computer 'alive' by typing something every so often. But I have to admit that that is not a very workable solution
 
Old 05-27-2007, 08:25 AM   #3
kstan
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For myself I think the problem come from your X server (mean your display). Try turn off screensaver, or install proper display card driver.
 
Old 05-27-2007, 08:35 AM   #4
druuna
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Hi,

@kstan: Turning of the screensaver could be helpful. But installing a proper driver will be a lot harder/not workable (this being a livecd).

I just thought of something obvious: Start and stay in runlevel 3. You don't need the X environment.
 
Old 05-28-2007, 08:54 AM   #5
help_a_newbie
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Hi, and thanx for your replies.

Well, druuna, I don't know how to start the live cd in these modes. I do use the 6.2-5 version, and I don't thik I can download another version of it in these days. I also tried to keep the system awaken by moving the mouse, but this sometimes can lead to compilation failure. Anyway, I tried to compile all the big-sized packs like this, and I managed to do it. Now I'm in the beggining of the chapter 6 and I don't know what do I have to type to create the $LFS/{dev,......} dirs. It says permission denied and when I try to change to root, it asks for password, which I dont know. Can I shutdown my computer with safety now? (I just press the power button?)What do I have to type when i get in live cd again?

kstan, to say the truth, I didnt understand even a word from what u said!!! I'm new and I don't know how to disable screensaver (and i dont even know if this will help, as druuna said)

Anyway, thank you again, and please, help someone who wants to become a linux-expert!
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Old 05-28-2007, 09:27 AM   #6
druuna
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Hi again,

Quote:
Well, druuna, I don't know how to start the live cd in these modes.
At a certain point when booting the cd there's a part where it waits a while, it also gives you the possibility to enter some extra boot options or show the possibilities (F1 if I remember correctly).
But it looks like you don't need this anymore.

Quote:
I do use the 6.2-5 version, and I don't thik I can download another version of it in these days.
Yes you can: Download LFS liveCD

Quote:
Now I'm in the beggining of the chapter 6 and I don't know what do I have to type to create the $LFS/{dev,......} dirs. It says permission denied and when I try to change to root, it asks for password, which I dont know.
You are probably still user lfs (re-read chapter 5.32). You can used the id command to check. If you are lfs, just type exit or CTRL-d. Before you go any further, check if you are root (the id command) and check to see if LFS is still set correctly (echo $LFS).

Quote:
Can I shutdown my computer with safety now? (I just press the power button?)What do I have to type when i get in live cd again?
Between the end of chapter 5 and the beginning of chapter 6 is a 'safe' point to stop.

You never ever push the power button to stop your computer, there's a chance of HD('s) corruption and/or data loss. There are e few safe ways to stop, I always use init 0

You already asked about stopping and starting. In one of your other threads I gave you a lfs hint about this subject.

Hope this clears things up.
 
Old 05-28-2007, 09:42 AM   #7
help_a_newbie
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Hey,

Yes, I remember having mentioned this again, and the hint you gave me too. I followed the instruction and when i typed the "export //" command to check if all variables are right, the message was not the same as the hint. I guess it may have been caused because I didt use a command to shutdown the system, i just pressed the power button, or because i did sth wrong. anyway, about th other issue, yes i was lfs user. so if i press "exit" it turns to root without a code needed? I have the chapter 5.32 in front of me right now, and the only command it gives is "chown -R root:root $LFS/tools", to change the ownership. I already did that. Is this command the "id" command?
Thanx

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