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UPDATE: New Battery Pack!

Laptop Akku für Lenovo ThinkPad T440 X240 T450 T440s T450s X250 X240s 4400mAh

yes it is thicker – yes it will make your laptop heavier… but it will run for 6 HOURS!

it comes with a manual that says: battery comes pre charged 70%, consume to 10% than charge to 100%, then consume to 10%… do this 4-5x times for battery to reach maximum capacity 🙂 NEVER LET IT REACH 0%!

how do you measure the performance of a battery? of course by runtime! diabled all energy savings (display sleep etc.).

cat /scripts/count_seconds.sh 
echo "Seconds counter:" > count.log
COUNTER=0
while true; do
sleep 1;
let COUNTER=COUNTER+1;
echo $COUNTER" Seconds...";
echo $COUNTER >> count.log;
done;

23927/60/60 = 6.64HOURS OF RUNTIME! NICE!

first of: it was bought at https://shop.delwi-itr.de for 300€ bucks and ideal linux boots and works like a charm.

pros:

  • 14″ screen, 13″ is to small, 14″ is reasonable, while the screen is often the part that uses most of the energy, so smaller screen = longer battery lifetime
  • the battery is quiet slim, but you can get 3x times the battery life with a 6 cell battery for around 50€
  • big touchpad, two-finger-scroll works perfectly with ideal linux (Debian) 🙂
    • the touchpad is big, but it is not triggered accidentally while typing.
  • slim design
  • 2x cores 2x threads (looks to OS like 4xcores) i5@2.9Ghz and 8GB RAM, 256GB SSD, that handles ideal linux with ease (any cpu core goes barely beyond 10% while firefox loaded)
  • the keyboard feels okay… it is pretty comfortable, has a two-level dimming backlight, and an green LED inside the FN (function) button.
    • you can activate the keyborad backlight with “Fn+Space” pretty cool 🙂
    • the “print” button is located very closely to space bar… okay why not.
    • what is missing is a “right-click” button
  • webcam integrated webcam with decent quality 1280×720

cons:

  • a mouse click on this touchpad means to press the whole touchpad… this feels sluggish and makes a lot of noise, that could have been solved more elegant.
    • i know understand this design decision: you can now mark text by holding the whole touchpad “left mouse button” down and sliding over the touchpad in order to select text 🙂 interesting 🙂
    • this was probably also done, to avoid accidental touch pad interaction while typing on the keyboard (and the thumbs almost always touch the touchpad)
      • i understand this is very tricky… and i like big two finger scroll touchpads… but to avoid accidental interaction and allow easy right mouse click would be nice
  • also right-clicking with the touchpad takes some time to get used to. (it only works if you press the top right corner of the touchpad)
  • when looking at gray parts of the screen i believe to see “dots” and “stripes”

 

overall:

it is a fast machine.

it works great with the stick.

but the sluggish touchpad and the 30min of effective battery life makes an almost perfect laptop.

this blog post was written with ideal-linux on a stick booted on lenovo t440 🙂

linux lspci dmidecode hardware info script results:

here are the results LENOVO-t440-20B7A1H4IX.txt

of the “hardware info and detection” script hardware_info_script.sh

benchmarks:

LENOVO-t440-20B7A1H4IX.cpuinfo.sh.txt

Viele fragen sich – was ist denn “die beste” Linux-Distribution?

Kurze Antwort:

gnu-debian-mate-gnome2-debian-girl-background

Es gibt nicht – “die beste” Linux Distribution – es gibt Distributionen – d.h. Anpassungen für einen bestimmten Zweck – für viele Zwecke.

D.h. eine Distribution die auf Multimedia spezialisiert ist – würde niemand auf einem Server installieren – und anders herum – wer ein Video schneiden möchte – oder Musik aufnehmen – würde sich keinen Server installieren. ubuntu_chinese_screenshot

Zum Teil überschneiden sich aber auch die Anwendungsgebiete – d.h. ich habe z.B. eine virtuelle Debian Maschine nur für PHP-Entwicklung – welche Server und Entwicklungsumgebung in einem ist – und das ist auch ganz gut und praktisch so.

Debian ist “minimalistischer” als Ubuntu – d.h. es kommt mit weniger Software vorinstalliert daher – was es standardmäßig – sicherer und ressourceneffizienter macht.

suse_linux_distribution_screenshotNatürlich kann man so viel Software nachinstallieren wie man will – aber generell ist das Gebot: Umso weniger Software installiert ist – umso besser – schneller – effizienter – sicherer das ganze System.

Weil Software IMMER Fehler enthält – heißt das – mehr Software – mehr Fehler im System.

Das ist Fakt. arch-linux_screenshot_2015

Lange Antwort:

Nun aber zum Titel des Themas – Ubuntu vs. Debian:

” release cycle was so slow that all of the cool whiz bang stuff that people were producing on Linux was just not making it into the stable releases, and the unstable development release that had all of these things was un-installable (no official isos) and broken quite often”

Ich versuche mal zu übersetzten:

“Der Update-Zyklus unter Debian ist langsam – d.h. all die neuen, coolen features/Funktionen haben es entweder nur sehr spät oder überhaupt nicht in ein Debian-Release/Veröffentlichung geschafft. Der un-stable Zweig von Debian (d.h. die allerneuste Version – aber größtenteils ungetestet) hat oft nicht funktioniert – d.h. es gab oft Probleme bei der Installation.”

Quelle: https://askubuntu.com/questions/1336/how-is-ubuntu-different-from-debian

Mein Fazit: Wer einfach ein solides aber einfaches System braucht – dem reicht Debian aus.

Zumal sich Debian gerade wegen seiner restriktiven Software-Update-Politik auf qualitativ hochwertige Software stützen kann – was Apple z.B. gerade grob fahrlässig vernachlässigt.

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Das Apple-Betriebsystem (OSX) und Apple-Firmware für IPad, IPhone und Co. war ein mal sehr sehr zuverlässig und robust d.h. es wurde viel getestet, bevor man es als (oft kostenpflichtiges) Update den Benutzern angeboten hat.

Um ganz ehrlich zu sein: Ja – ich möchte, dass Sicherheitslücken durch Updates so schnell wie möglich geschlossen werden – und hier macht Debian denke ich gute Arbeit.

Die allerneusten Features brauche ich ehrlich gesagt nicht – ich bin zufrieden wenn die “Basis” zuverlässig und stabil und sicher arbeitet.

Insofern bin ich komplett “d’accord” mit Debian’s Release Politik – auch wenn diese vielen als etwas zu konservativ erscheint.

Noch krasser: Die FSF (“Free Software Foundation“, “Urheber und Erfinder der GPL“) finden, dass Debian sogar zu inkonsequent ist, weil die Debian-Update-Server – optional auch “non-free” d.h. Closed-Source Software anbietet. (Firmware für CSL-WIFI-Adapter 🙁

0f:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 07)

pciid: „10ec:8168“)

D.h. allein schon die Möglichkeit – dass man nicht-quell-offene Software wie Firmware für eine WLAN-Karte nachinstallieren kann (non-free repository) findet die FSF “katastrophal”.

Dieser Logik nach ist Ubuntu “mega katastrophal”.

vint-richard-stallma_1

“Ubuntu GNU/Linux

Ubuntu provides specific repositories of nonfree software, and Canonical expressly promotes and recommends nonfree software under the Ubuntu name in some of their distribution channels.

Ubuntu offers the option to install only free packages, which means it also offers the option to install nonfree packages too.

In addition, the version of Linux, the kernel, included in Ubuntu contains (non-free?) firmware blobs.

richard_stallmann_gnu_fsf_priest

The “Ubuntu Software Center” lists proprietary programs and free programs jumbled together.

It is hard to tell which ones are free since proprietary programs for download at no charge are labelled “free”.

Ubuntu appears to permit commercial redistribution of exact copies with the trademarks; removal of the trademarks is required only for modified versions. That is an acceptable policy for trademarks. The same page, further down, makes a vague and ominous statement about “Ubuntu patents,” without giving enough details to show whether that constitutes aggression or not.

That page spreads confusion by using the misleading term “intellectual property rights”, which falsely presumes that trademark law and patent law and several other laws belong in one single conceptual framework. Use of that term is harmful, without exception, so after making a reference to someone else’s use of the term, we should always reject it. However, that is not a substantive issue about Ubuntu as a GNU/Linux distribution.

richard_stallmann_thank_gnu_cup

Debian GNU/Linux

Debian’s Social Contract states the goal of making Debian entirely free software, and Debian conscientiously keeps nonfree software out of the official Debian system.

However, Debian also provides a repository of nonfree software. (eeeeeeeeeeeeeeeviiiiiilll……… VENDORDS! PROVIDE “FREE AS IN FREEDOM OpenSource GPL” DRIVERS! NOWWWWW!!!!!)

According to the project, this software is “not part of the Debian system,” but the repository is hosted on many of the project’s main servers, and people can readily find these nonfree packages by browsing Debian’s online package database and its wiki.

There is also a “contrib” repository;

role_play_games_card_richard_stallman

its packages are free, but some of them exist to load separately distributed proprietary programs.

This too is not thoroughly separated from the main Debian distribution.

Previous releases of Debian included nonfree blobs with Linux, the kernel.

With the release of Debian 6.0 (“squeeze”) in February 2011, these blobs have been moved out of the main distribution to separate packages in the nonfree repository.

However, the problem partly remains: the installer in some cases recommends these nonfree firmware files for the peripherals on the machine.”

laptop_fsf_gnu_and_stallman_2012

Quelle: https://www.gnu.org/distros/common-distros.en.html