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Linux Notebook battery tips

With the gradual impact of Linux operating system, many Linux users want to be able to run their own Linux operating system, notebook computer, in order to use it.

 

My laptop is a more than a year ago to buy the purple V610D laptop, configuration is as follows: CPU for low voltage (1.05-1.25V) of the AMD Athlon XP-M 1800 +; memory DDR256MB; card SIS650, integrated up to 64MB dynamic video memory ; card is built-in 802.11b wireless card; modem HCF V.90; sound card as AC97 2.13D stereo; USB × 3, VGA interfaces, S Terminal, IEEE 1394, PS / 2, external microphone jack, speaker jack, RJ11 (MODEM) jack, RJ45 (LAN) connector, motherboard chipset is SIS NB 650.

 

System established Win2000, Mandrake nine.1 Linux double organisation. The use of normal laptop, but I concerned that the computing device constitutes the Acer UM09A31 battery problems. Although the written description of power management: Enhanced AMD Power NOW! Technology, the laptop battery type is lithium ion rechargeable Dell Latitude E5400 battery, laptop battery lasts about 4 hours. But in the process of using Linux command line usually began alone 3 60 minutes* from standby time five hours, can be said, and to know the mobile version of the CPU is AMD Athlon XP-M 1800 +, data query through its maximum power at about 25W. After several experiments, the author concludes that in Linux Dell Latitude E5500 battery life some of the skills, we want to help.

 

First, start the Power Management

 

To accomplish power direction, the most important two points: First is the need to support power-saving equipment, Ben Shen chime Neng, such equally Ying Pan, you can temporarily shut down by Zhi Ling; second is to require operating system support for king management, so that you can idle for a period of time in call-driven power direction feature article* off the device. Two kinds of index management standard: APM and ACPI:

 

1, APM

 

Traditional APM (Advanced Power Management) is a standards-based power management bios, the current most former interpretation is 1.2, which provides CPU and device power management features, power management, but as these comprises mainly achieved by the bios, so Some defects, such as excessive dependence along the bios, the inconsistency between the old and new bios, and can not determine power management command are broached aside the user or initiated by the bios of some of the new hardware such as USB and 1394 are not supportive .

 

2, ACPI

 

To make up for deficiencies in APM, the new power management ACPI (Advanced Configuration and ability port) arrived into being, it is mainly the power management of the main actors converted into the operating system from the bios, this will provide greater flexibility and scalability sex. The current mainstream laptop supports APM and ACPI generally two standards.

 

APM can make the machine in Suspend (suspension) or adhere (stick) country, also as check the laptop battery capacity. The ACPI is also able to peripherals (such because: proctor, video card, PCI bus) power alone, the savings inwards force have more control. To enable power management features to take effect, the core in the Bios and Linux to open it, and Linux, load the necessary software.

 

3, check whether the system supports Power Management

 

In the more new core in, are included on ACPI and APM support. Generally, ACPI is activated. Use dmesg to test this:

 

dmesg | egrep-i ‘(apm | acpi)’

 

BIOS-e820: 000000000fff0000 – 000000000fff3000 (ACPI NVS)

 

BIOS-e820: 000000000fff3000 – 0000000010000000 (ACPI data)

 

ACPI: have wakeup address 0xc0001000

 

Kernel command line: BOOT_IMAGE = linux ro root = 307 quiet devfs = mount acpi = on

 

ACPI: Subsystem revision 20030122

 

ACPI: Disabled sis command line (acpi = on)

 

PCI: ACPI tables contain no PCI IRQ routing entries

 

apm: BIOS version 1.3 Flags 0×07 (Driver version 1.16)

 

The author of the ACPI is enabled, so the software, the hardware support is necessary. If your computer does not have ACPI support can

 

http://sf.net/projects/acpi/ download patch. acpi-0.07.tar.gz download link

 

http://grahame.angrygoats.net/source/acpi/acpi-0.07.tar.gz and then install it.

The New Hp Laptop With Linux, is it the Right Choice for You?

In the Microsoft Windows dominated world, it is big news when a company announces that it is going to implement a Linux operating system on one of its computers. It is even more surprising that when that computer is a laptop. But that is exactly what Hewlett-Packard did with its nx5000 HP laptop.

While you may have experienced glitches on other laptops running the Linux operating system, this one passes the test with flying colors. But if you just have to have your Windows operating system, HP does allow this as an option for its nx5000.

The nx5000 model HP laptop is a medium sized computer weighing in at approximately six pounds. Some of the features that can be ordered include your choice of a Celeron up to a 2 GHz Pentium M processor, a hard drive from 30 to 60 MB, up to 2 GB of memory, Bluetooth technology, DVD ROM/ CD RW drive, WiFi access and more. You may also select a DVD burner, a more powerful battery and a SXGA+ screen.

The nx5000 comes with Novell’s SUSE Linux 9.1 installed. But one of the biggest achievements is how well the operating system is integrated with other components on this HP laptop.

Other users who have installed Linux operating systems on their computers have reported problems with wireless connectivity or other issues. This is not so with the nx5000. Everything seems to work perfectly right out of the box.

The desktop environment that is included is the KDE 3.2, which is quite attractive, efficient, and user friendly. This HP laptop also comes with the Open Office suite of software, which is comparable to Microsoft Office.

If you are comfortable using Microsoft’s software, then you will have no problem using the Open Office suite. One of the great things about Open Office software is that it is entirely compatible with the Microsoft Office suite and will save your documents in the same formats.

Hewlett Packard has even included software for watching movies also, LinDVD, so you do not have to worry about buying additional software. It also comes with Real Audio Player already installed.

HP has done an excellent job integrating the Linux operating system into its nx5000 laptop. And if you have been longing for a full featured system that rivals Windows, then you just may have found it.

Inaccessible Linux Partitions After Using mksf.ext3

mksf.ext3 is a Linux command that allows you to create a Linux file system (ext3), generally in a hard disk partition. When executing the command, you need to specify the device name the file system should reside on. The command creates the file system with ext3 journal. If you execute this command on a system attached with multiple hard drives (for example, in RAID), it is recommended to specify the device name carefully. Failing to do so might result into data loss instances, such as inaccessible partitions. However, to cope up with such situations, you generally require restoring lost data from backup or using Linux Data Recovery applications that could effectively scan your drive and restore lost data at a safe location.

As an instance, you use a RAID 1 system with multiple drives (for say, /dev/sdb1 and /dev/sdc1) . Then,  you use MDADM to create RAID 1 device (for say, /dev/md0 )and apply mkfs.ext3 command on individual drives. After this, when you try to mount the system, the partitions appears to be inaccessible and you cannot access the data furthermore.

MDAM is the utility that could manage, create, monitor and delete MD devices (Linux software RAID)

Cause

A Linux system exhibits the similar behavior, as above, if running mkfs.ext3 command has overwritten the superblock information. This results into inaccessible partitions. Thus, if you require to use this command, it is recommended to run it on RAID device (/dev/md0 in this case) itself and not on other drives.

Solution

To solve such problems, you should perform these methods:

Try running the following command:

e2fsck -f /dev/md0

If problem persists, restore from backup

If no valid and clean data backup is available, you should scan your hard drive and recover your lost data by using Linux Recovery tools.

Linux Data Recovery applications are powerful data recovery tools that use effective scanning algorithms to recover lost data. These utilities are competent to examine a logically crashed drive and to perform safe recovery. Such tools provide you interactive user interface and safe options that assist achieving complete recovery results.

Stellar Phoenix Linux Data Recovery is an advanced data recovery application designed for Ext2, Ext3 and ReiserFS file system drives. It is a comprehensive Linux Recovery tool that provides safe recovery, complete documentation and rich set of features. The application is compatible with most of the Linux distributions including Red Hat, SlackWare, Turbo Linux, Unbuntu and more.