Ubuntu Servers :: 10.04 LTS - CPU (Power Saving) For Home NAS
May 18, 2011
I am planning to make a home made NAS running ubuntu server 10.04 LTS. Nothing fancy, simple samba with open access for all and openssh for admin access over the network. The NAS will not have heavy traffic, two home computers with occasional access, just to serve as central location. I am in doubt which CPU to use and I am after both budget and power saving solution.
1. I have an old Athlon Clawhammer I can use but the TDP of 90W is putting me off. I can also use existing 2x512MB DDR-400 memory with it. The board would be new.
2. I would rather invest in new mini-ITX board with built-in dual-core Atom D525 (TDP 13W), VGA and Gb ethernet. I would add 2GB DDR3-1333 memory.
Since I would need a new board for the Clawhammer too (current one doesn't have SATA), I am more attracted to option 2. Would the dual-core Atom be enough running this simple home NAS? I think it should but my experience with ubuntu server is limited.
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Mar 1, 2010
I've been running my Dell SC440 as a home server/workstation for about a year now and whilst it can cope with both roles, it is power hungry, loud and does get a little slow down sometimes. What I am looking to do is create a home server to take away the need of it to be on 24x7.My requirements in a home server would include:
- Media Server (using TwonkyMedia or uShare)
- NZB Downloader (hellaNZB or sabNZB)
- AFP + NFS file serving
- rsync/unison for Linux backups and N900 media sync and backup
- Email/Calendar/Contacts hosting and sync (zimbra or zarafa?)
I would like to achieve this with an Acer Revo and a couple of 1 or 1.5TB external hard disks, I'm unsure if the Atom processor would be strong enough for all of these services, although I could test it using my netbook, if that can cope, the Revo would be able to easily.
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Aug 24, 2010
I recently installed the first non-virtual Ubuntu server in our office (to put it in perspective, it's outnumbered several to one by Windows servers). It had an inexplicable array failure, and now it's been retasked to run VMware Server for testing purposes since we don't trust it at the moment. For the sake of ease of use, on this server I decided to install Xubuntu desktop x64, rather than Ubuntu server as I've done with a couple others.
This server is on an old school 8-port Linksys PS/2 KVM. It's got a CRT monitor in the middle of a rack of somewhat aging equipment. The problem I'm having is somewhere between the KVM, this old monitor, and some power saving... when Xubuntu tries to put the monitor in standby, instead it gets this vertically scrolling garbage. The Windows servers in this rack don't have any problem putting it to sleep, but I figured I might as well just turn off DPMS on this particular server.
So I logged in via SSH, stopped GDM, generated a /etc/X11/xorg.conf, and changed Option "DPMS" to Option "NoDPMS" which according to the manpage should take care of it. I also changed the GDM video mode with this xorg.conf so it's definitely being used. Following some other suggestions I found in my search, I issued "xset s off" and "xset -dpms" but this hasn't disabled monitor power saving either. I've been restarting GDM each time I change something. 5-10 minutes later it's scrolling garbage again. What's it going to take to turn off monitor power saving at the GDM logon screen?
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Dec 8, 2009
running PCLinuxOS 2009.1 on my main machine : AMD Phenom II 545, 3GB DDR2, ATI Radeon HD 4870 512 GDDR3, 1 x 250GB IDE, 1 x 1x 250 GB SATA, 1 x 160GB SATA, 1 x 500GB SATA.What I want to disable are the HDD's powering down after a while because when I come back to work at my machine, it is painful to wait for the HDD's to spin up again. I also want to disable the screen from turning off. I have removed DPMS from myxconfig, but it as made no difference.
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Mar 24, 2011
I intend to buy a UPS for personal use. I have a slackware 13.1 machine on a quite old pc, and what I would like is just the PC to being turned off after 5minutes every time there is a blackout. I have found the APC Power-Saving Back-UPS Pro 550. However I don't know if there are drivers for slackware.
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Sep 24, 2010
I have classrooms filled with PXE booted PC's.As many students always left PC on, i want to try some powersaving.
1-Is it better to get suspend on ram or suspend to disk ?
2-Will the PC resume on mouse click or key push ?
3-When suspended, is there a way to wake up the PC from the network ?
4-Will PXE may introduce some trouble i can't think of now ?
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Apr 2, 2010
I am using Xubuntu 9.10 on a nettop as a X11 terminal.In order to do that, I created a custom session script that runs some commands instead of starting xfce4-session and the likes from GDM. When I boot this nettop, GDM automatically logs a dummy user in (called "test"), and runs a script that does "xhost +", and opens a small X Terminal to keep the X session alive, while some other computer sets the DISPLAY environment variable to point to <nettop>:0 and runs gnome-session.
My trouble is that after 10 minutes of idle, the screen is blanked(power saving I presume).
I tried to add "xset -dpms" and "setterm -blank 0 -powersave off" to my startup script, in vain. I want my power saving options to be configured on the remote computer, not the nettop. How could I prevent X/GDM/Whoever from blanking the screen ?
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Feb 19, 2010
I work on Ubuntu 9.04 and our application requirement is not to go to power saving mode when application is running. I added ServerFlags section to /etc/X11/xorg.conf
Section "ServerFlags"
Option "blank time" "0"
Option "standby time" "0"
Option "suspend time" "0"
Option "off time" "0"
EndSection
This didn't help. Then I tried following commands
gconftool-2 -s /apps/gnome-power-manager/ac_sleep_display --type=int 0
gconftool-2 -s /apps/gnome-screensaver/idle_activation_enabled --type=bool false
I see that it works fine only if I change settings via Settings>ScreenSaver>Power Management in gnome. I wan to do this via script. Can I do this? Which file gets updated when I change display settings via Settings>ScreenSaver>Power Management.
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Apr 18, 2010
I am running openSUSE 11.2 x86_64. I am processing work units from Folding@home on this pc. Strange thing is, when I actually leave the pc alone and working on folding@home, my performance actually drops instead of going up as I would expect. I believe there is some kind of powersaving feature I cant find or something else that's hurting quite a bit on the PC. I am talking about maybe 20-30% performance loss. PC in question is: Athlon II 630.
Already deactivated Cool'n'Quiet from the BIOS. Got no fresh ideas on what could cause this weird behaviour.
Update:
Code:
[22:05:52] Completed 260000 out of 500000 steps (52%)
[22:18:28] Completed 265000 out of 500000 steps (53%)
[22:30:41] Completed 270000 out of 500000 steps (54%)
[22:40:20] Completed 275000 out of 500000 steps (55%)
[22:48:16] Completed 280000 out of 500000 steps (56%)
PC was "idle" working on folding and I came back at 54%, see the huge difference? Frames were taking about 13 minutes each when "idle". When I am using the computer, frames are done within 8 minutes.
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Feb 4, 2010
All of a sudden today there was no display on my Ubuntu PC. It seems to be powering on - I get the LG screen when the monitor is switched on - but it goes into "Power Saving Mode". How do I diagnose this? I already unplugged and plugged. Monitor is connected to a graphics card - no change when I switched to VGA.
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Dec 27, 2015
I've recently changed to Debian from Windows, it's a really great adventure so far, but I have one problem. So as I see you can set your monitor into "Blank Page" after 10 or any minutes to save power, like in Windows. 10 minutes passes, without any movement my monitor's led turns into orange and the monitor turns off, that's great, that's what i want.
But after a few seconds the led turns green (like when it's on), and it brings up a little box : "Power Saving Mode" (just like it did after 10 minutes), and it turns off, and then stars again from the beginning . And this goes on repeatedly until a move my mouse to get back from "Blank page" state. (It's like the monitor tries going into power saving mode, but it gets always a little bit of power, to show that text box, and start all over.) So what can I do? I use debian 8.0 "jessie", and my monitor is a LG L1750S(with Nvidia GeForce 9600 GT).
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Nov 28, 2010
I run Ubuntu Netbook 10.04 on my EeePC 1005HA. I'm going to get a SSD for it eventually, but I can't afford one right now so it's running from a 200GB hard disk I scavenged off a dead laptop.
I went in power management and set the option that says "spin down hard drives whenever possible", but this accomplished a whole lot of nothing - whenever the computer is on, the drive's spinning. I ran hdparm -y and the drive clicked off, and then promptly spun back up after a few seconds. Iotop shows occasional tiny bursts of activity from "jdb2/sda1-8", which I don't really know how to interpret, but I don't have anything weird installed so I'm assuming this is normal system operation.
Now, what I need is some sort of application, utility, command - anything - that forces the computer to keep all filesystem changes in RAM with the drive shut down; every five/ten minutes or so (this would hopefully be configurable) it spins up the drive, dumps the filesystem changes to it, and spins it down again.
I realize this presents data loss risks related to crashing and poweroffs when the cache hasn't been dumped to disk, but I'm willing to risk it as Linux never really crashes at all, and since it's a netbook power failures won't cause unexpected shutdowns.
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Nov 21, 2010
when my monitor turns off after 30 minutes, I cannot do anything after. We're talking complete lock down of Ubuntu 10.04 64-bit. Not even alt+printscreen+REISUB reboots the machine; I have to do a hard reboot (which sucks and is hard on hardware).
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Mar 10, 2011
I've covered a little of the exploration of this in another thread here. Unfortunately no replies.I've now installed as many power-saving features as I can get to work including laptop-mode scripts and my Asus Eee PC 900 has the battery lifespan of a gnat (2 hours 39 mins of extremely light usage including a long period of inactivity although with wireless turned on, from fully charged to battery cutting out, annoyingly this time ignoring my script that registers a critical battery APCI event and shut it down safely).
So, basically is my new Asus Eee PC 900 the worst designed netbook ever, or is linux just not supporting it's power-saving features? It is actually the version that comes with Asus's own linux distribution on it, but I've installed Arch.
[Code]...
What then are the power-saving options left available to me? How can I extend my battery life to long enough to check an email? What out of what I've said ins't working that really should?
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Jan 28, 2010
I am trying to figure out why, i need to restart/reboot ubuntu in order to reconnect wirelessly after being in power save mode. It works fine before the power-save mode and fine after the restart. Is it an IP issue?
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Apr 20, 2010
So I've come across several tips to optimize battery life on Linux. [URLs]. In addition to undervolting, I would like to underclock. Is there a way to control CPU speed outside of the BIOS via some software control in Linux... or some sort of boot manager? I would like to boot to linux using underclocked speeds and have Windows running full blast. Is there a way to run Linux completely in RAM? I have read that saves on power consumption from the hard drive.
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Mar 15, 2010
I was digging through my laptop tonight and I realized I'd like more control over my home folder. It seems as though programs installed on my laptop just pick their own conventions for saving data and none of them are the same. Some programs store their data in self named hidden folders, others use ~/.config and others use ~/.local/share to put their stuff. Is there a way I'm missing to get all these to cooperate or are we doomed to always having programs making themselves at "home" and just tossing off their shoes wherever they like?
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Dec 26, 2009
i decided to try archlinux in my pc a while ago so i installed it... after three months i started to miss slackware so i decided to reinstall it but i wanted to save my /home partition so when i installed slackware i left my /home partition from arch hoping that i could just mount it on slackware...but now when i try to mount that /home partition this is what i get:
bash-3.1# mount /dev/sda4
mount: wrong fs type, bad option, bad superblock on /dev/sda4,missing codepage or helper program,or other error In some cases useful info is found in syslog - try dmesg | tail or so
code....
So i dont really know what is going on here but i hope somebody could help me because i really NEED to get the data from that partition.
oh and by the way i installed slackware on ext4 partitions and the /home partition from arch is ext3 so i dont know if that's maybe the problem o_O?
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Feb 22, 2011
I just got a new keyboard the other day, but it has a horrible button saying "Power" which as it says, makes ubuntu shut down without saving anything! How can I disable the button? This is the second time I have accidently hit it.
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Nov 24, 2008
I have a few machines set up and running Red Hat 4.1.2-42 in a computer lab. I also have a single test machine running the same version. The machines in the lab work flawlessly.However, when machines are on the login screen, they don't go into power saving mode. That is, after a certain amount of inactivity, the idle login screen should be replaced by a black power saving screen. But this does not happen. The monitor should go into standby (the little green light becomes orange, and the whole screen shuts down until you move your mouse again...you know the drill).I know this is supposed to be the case because this works on the test machine. It just doesn't work in the lab. I think it has something to do with gdm, but I can't for the life of me figure it out.
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Mar 30, 2010
Designing a website locally on Ubuntu for the first time, Apache 2, PHP, MySQL, and PHP My Admin are all up and running fine.
I have been using Gedit to modify pages by opening them after navigating to the /var/www folder using gksudo naultilus. This works fine but I decided this morning that I wanted to use Aptana instead..
Aptana runs fine but when I try to save to anything under /var/www I get a permissions error. I tried giving myself read/write permissions both via terminal (chown) and in gksudo nautlius.. no change.
How can I write to these folders from Aptana? Also, is there any way to link to /var/www from my home folder so that I don't have to keep going there "the long way?"
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May 24, 2011
I need to specify a different path to home directories on a particular server than what LDAP contains for the users, besides using a symlink. E.g. "/Users/jdoe" vs "/home/jdoe" I don't want to change the actual LDAP attributes, just want a particular server to point them in the right direction (Ubuntu 10.04).
I'm assuming it's something I could probably set in pam configurations?
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Jun 10, 2011
What does this error mean i try to save it and get this? Irssi: Error saving theme to /home/perlsyntax/.irssi/default.theme: Permission denied
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Sep 19, 2010
I just got my electricity bill for July & August and noticed a dramatic increase in my consumption. Basically, the amount of electricity has almost doubled (from 433 to 748kWh) and the increase happens mainly between 5pm and 11pm, as well as during weekends... I did not have to search for too long before I pointed out the issue... My new home server. It is configured to auto WOL at 5PM and auto shutdown (Cron) at 11PM. It also runs 24h/day on weekends...
Here's the server's config:
Hardware:
MSI Platinum K9N mobo
AMD Athlon64 CPU
1GB DDR2 Ram (2X 512MB)
[code]....
Everything else is only "run-on-demand" or scripts... I am searching for suggestions on how to minimize the power requirements. The video card is going to be replaced soon, by a standard PCI 4MB videocard. Next I will get rid of the 80GB & 750GB HDD's to be replaced by a 1.5TB HDD...
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Apr 25, 2011
I am looking for some advice on a Linux home server. I'd like it to be low power and reliable. I have searched and found a lot of information online already, but it's too hard to choose due to the many options and opinions.
The main reasons for me to get a home server are (more or less in order of priority):I'd like to have my files centrally, so I can reach them from my laptop, my PC, my phone, from work etc ( or stream them)
I'd like to have my own e-mail server for my own domain(s), perhaps also Jabber
I'd like to have my own web server to develop and perhaps even to host a website
I might play around with home automation in the future
Of course I am not here to ask questions regarding the software I would need, but I'd like to get a nice low power (I am a bit of an environmentalist, but not extreme) and reliable server.
I also get the impression that many people like AMD Geode processors and the choice is certainly not limited to these products. I am here for suggestions.It's not a necessity that the server will be small. Actually, I think I'd like to have something with two discs, so I can use RAID (no experience, but it makes sense to do), so the B3 looses from the Via here.Also, I like a bit of flexibility, so I think I would prefer a home network in the future with a separate modem, router, server and WAP over an all in one solution. Perhaps even have the hard disks in a separate case? Actually, I think it makes sense to place a server out of sight (aesthetics, theft, etc), while a WAP should of course be fairly visible.
At the moment, I do not have lots of files to store, but I think it makes sense to get decent capacity anyway (at the very least 500 GB and expandable).Making a good choice is more difficult for me than spending the money. I'd be happy to spend something around 400 - 600 for a good product. I am able to put components together myself if that would give me a much better product for the same amount of money (did it before, but not so often).
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Jul 13, 2010
I connect with ssh to an Ubuntu server to edit some files in /var/www witch I have set the setgid bit:
# sudo chgrp -R www-data /var/www
# sudo chmod -R 770 /var/www
# sudo chmod -R g+s /var/www
I have added the user "user" to www-data group. Now I connect using ssh as user "user" to my server with nautilus. When I copy files using nautilus file get the group permission 'www-data' as they should. But if I edit a file using Gedit and save it, the file's group get changed to "user" group ?
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Feb 9, 2010
So I've set up a Samba server through the gui. When I've labeled my shares as accessible to everyone, I can get to it no problem. However, when I tie it down to a specific samba user, I can't.
By all indications, it appears that it isn't saving the password because every time I go to edit users, it has the exact same string in the password field.
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Feb 25, 2011
About 2 years ago I was trying to figure out a way to use high end GPUs to supplement server processes. I made a post about it:URL...It seems like somebody was able to do this and create a super computer which ran purely on GPUs:URL...It would be interesting to see if this was possible to set up the server kernel to use high end GPUs to add processing power.It should be possible as long as the kernel would handle this as it would a multiple core processor.
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Jun 15, 2011
I've done a lot of search and already kind of fixed part of the problem, so this is where the fun comes in. I went away for the week, and not until the day I got back I lost power while out, and my computer rebooted after the power outage to Mac osx, which it's supposed to do as I'm using a Mac Pro and have a regular version of OSX 10.5 on there and my ubuntu server. I restart my computer and I get a few errors and my raid5(3 1tb drives) doesn't mount and says read only for everything else. I finally found a way to remount that raid which while in root I could create new folders and move folders, but only on that raid. I wasn't able to do anything with my boot drive. The weird part is, that now I can't ssh into the server and webmin won't even load. I'm still relatively new(little over a year, but honestly, not much has gone wrong to need to troubleshoot) to ubuntu server, so I'm not that best at troubleshooting it. I won't be home till later tonight, but any tips/tricks/ideas I can try when I get home would be great, or if you need any info, I can get it to you.
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Feb 28, 2010
I built a home server (NAS/WWW/SSH/media server etc) and chose CentOS 5 as the OS (stability, easy of configuration).I was just about to start tuning the power consumption when I realised that the kernel CentOS uses is so "old" that it does not support the latest reduced power consumption enhancements that Linux has achieved in big strides in the recent past (we are probably still talking 6-12+ months ago e.g. tickless kernel)..
So my questions; 1) I know CentOS was maybe not meant for home servers (certainly its not its primary purpose), but if it is, any ideas of what kind of power consumption it takes (I know its relative) and if there are particular power consumptions that are worthwhile?
2) Do you recommend me compiling my own 2.6.21+ kernel from kernel.org or am I just likely to have compatibility issues (I really did not want to do that) or when is CentOS 5.4 supposed to have a newer 2.6.21+ version kernel?
Was it wrong of me in principle to choose CentOS for a home server when I am power conscious? (I don't have a low-power VIA processor either but a P4 so I am really just hoping to make do with software changes).
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