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| − | [[Category:Power management (English)]] | + | [[Category:Power management]] |
| − | [[Category:CPU (English)]] | + | [[Category:CPU]] |
| − | [[Category:Tutorials (English)]] | + | [[ru:Powersaved]] |
| | + | {{Lowercase title}} |
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| − | {{i18n_links_start}} | + | The '''{{ic|powersaved}}''' package has been replaced by [[pm-utils]] (hibernate/suspend) and [[CPU Frequency Scaling]]. Please see those wiki articles for up-to-date information. |
| − | {{i18n_entry|English|Powersaved}}
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| − | {{i18n_entry|Русский|Powersaved_(Russian)}}
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| − | {{i18n_links_end}}
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| − | | |
| − | = IMPORTANT =
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| − | The '''<tt>powersaved</tt>''' package has been replaced by '''[[Pm-utils]]''' (hibernate/suspend) and '''[[Cpufrequtils]]''' (CPU frequency scaling). Please see those wikis for up-to-date information.
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| − | | |
| − | ==Goals==
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| − | The goal of this article is to get cpu speedstepping. Also suspend to ram and possibly to disk too, both possible for standard (non-root) users. This should all be provided by the powersaved daemon.
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| − | | |
| − | ===Required packages===
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| − | *extra/powersave
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| − | *extra/gnome-power-manager (or kde equivalent)(optional)
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| − | | |
| − | Install by doing:
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| − | <pre>
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| − | pacman -Sy powersave gnome-power-manager
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| − | </pre>
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| − | | |
| − | ===Post-installation steps===
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| − | #Add your user to the <code>power</code> group (e.g. by editing <code>/etc/group</code>).
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| − | #Put <code>powersaved</code> into the deamons array in <code>/etc/rc.conf</code>, or manually start the deamon (<code>/etc/rc.d/powersaved start</code> with root privileges).
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| − | #Run <code>gnome-power-manager</code> (if applicable). <code>gnome-power-preferences</code> can be used if you cannot see the program icon in the system tray by default.
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| − | | |
| − | ==CPU Stepping==
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| − | When you started for the first time, the powersave daemon will give you a warning like this:
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| − | <pre>
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| − | enter 'powernow_k8' into CPUFREQD_MODULE in /etc/powersave/cpufreq.
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| − | this will speed up starting powersaved and avoid unnecessary warnings in syslog.
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| − | </pre>
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| − | Sometimes auto detection of the right module fails. So if you are sure you need a module different from the one provided you should use that instead.
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| − | | |
| − | You should edit the /etc/powersave/cpufreq file as root and adjust the following parameters:
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| − | *CPUFREQD_MODULE
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| − | *CPUFREQ_CONTROL
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| − | <pre>
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| − | $editor /etc/powersave/cpufreq
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| − | </pre>
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| − | Set CPUFREQD_MODULE to the module the auto detection found, or the one you think you need.
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| − | I'd like to set CPUFREQ_CONTROL to ondemand.
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| − | | |
| − | Now, when you restart the powersave daemon, it should start without warnings.
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| − | | |
| − | To test if you actually now have speedstepping I use a gnome tool, which you can add to your panel. It's called '''CPU Frequency Scaling Monitor'''.
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| − | | |
| − | ==Suspend to ram (suspend2ram)==
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| − | If using gnome-power-manager, you can click <code>Suspend</code> on the system tray icon. From console, run:
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| − | powersave -u
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| − | | |
| − | Problems can be diagnosed in <code>/var/log/suspend2ram.log</code>
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| − | | |
| − | ==Suspend to disk (suspend2disk)==
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| − | In order to get suspend2disk to work (this is labeled as '''hibernate''' by Gnome convention), you will need to edit your GRUB <code>menu.lst</code> file (e.g. <code>/boot/grub/menu.lst</code>).
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| − | | |
| − | Add <code>resume=/dev/swap</code> as the kernel argument to <code>menu.lst</code>, where ''swap'' is your swap device.
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| − | | |
| − | E.g.
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| − |
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| − | # (0) Arch Linux
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| − | title Arch Linux [/boot/vmlinuz]
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| − | root (hd0,2)
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| − | kernel /boot/vmlinuz26 root=/dev/hda3 resume=/dev/hda4 ro
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| − | initrd /boot/kernel26.img
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| − | | |
| − | Reboot before you attempt to use the feature.
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| − | | |
| − | You can suspend to disk by clicking on <code>Hibernate</code> in gnome-power-manager menu or in console by:
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| − | powersave -U
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| − | | |
| − | Problems can be diagnosed in /var/log/suspend2disk.log file.
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| − | | |
| − | ==Known issues==
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| − | * Sometimes auto detection of cpufreq modules doesn't detect the proper module. Users are advised to check if the correct CPU module has been loaded after installation
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| − | * ATI video card owners may need to disable the framebuffer in order for suspend-to-ram to work properly. Add '''''vga=0''''' to the kernel options in ''/boot/grub/menu.lst
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