“The function resets the cache not only when necessary, but also on the “order” of any application. Linus Torvalds, the Creator of the Linux kernel, opposed the addition of the L1 data cache reset function when context switching to the […]
all infos about one’s harddisk: # tested on: hostnamectl Static hostname: centos.localdomain Operating System: CentOS Linux 7 (Core) CPE OS Name: cpe:/o:centos:centos:7 Kernel: Linux 4.15.9 Architecture: x86-64 # software needed: install smart monitoring tools yum install smartmontools.x86_64 # nice overview: […]
every once and a while… laptops and notebooks run out of battery… and when one manages to plug them in just 1% before stalling… the wifi on Debian might already be in hibernation and hardware on off does not help […]
“In the popular series of wireless keyboards Fujitsu LX390 found two dangerous vulnerabilities. According to researchers from the company SySS, exploitation of vulnerabilities allows nearby attackers to “spy” passwords entered on the keyboard, or even to seize control of the […]
what IT can learn from nature: (src) mostly US users affected. Big Business: Big Companies and Big Money can afford Big Staff to maintain and secure their products, but they also provide Big Infrastructure (AWS, Office) and thus a single […]
screw Qualcomm, what one wants is should work out of the box with recent Linux kernels on Open Source drivers only: Recommended tested Hardware – Superb Wifi WLAN Adapter Chipset Atheros AR9285 Mini PCIE for GNU Linux Debian 10 Ubuntu […]
tested on: Operating System: CentOS Linux 7 (Core) CPE OS Name: cpe:/o:centos:centos:7 Kernel: Linux 4.15.9 Architecture: x86-64 # using vboxmanage –version 5.2.6r120293 ah lovely isn’t it? BSOD Win98 style… errors were NOT the exception, they were THE NORM (and still […]
to be straight: have not managed yet to unlock a pin locked ipad 3 and ipad 4 and/or recover the data. it is easy to just overwrite the ipad with the latest firmware via itunes. but i want to backup […]
While “backdoors” in hardware sound like a good idea… you don’t know how hackers are using it to sabotage infrastructure or extort bitcoins of another country’s companies… see “backdoor in cisco router“. IT IS F**** DANGEROUS! ESPECIALLY if it is […]
it will kill “only” 15% of all cars, because electronics of cars/trucks already are “spark-resistant” designed, because sparky things with many many volts is going on under the hood. 2016: https://www.heise.de/tp/features/Schutz-vor-einem-EMP-Angriff-3222031.html there is nothing more annoying than a backup that […]
aim: the harddisk of a macbook has grown too small (256GB), so all data shall be transferred to a new bigger harddisk (512GB SSD) hardware: you will need an external harddisk and switch in your new bigger harddisk. usb to […]
Update: 2020.03 “The newly developed Rowhammer- attack TRRespass can crack the RAM-a security mechanism by many DDR4-DRAM-modules as well as LPDDR4 Chips. Until now, these were considered to be almost immune to Rowhammer attacks.” https://www.com-magazin.de/news/sicherheit/software-hammer-ram-schutz-attackiert-2515621.html Update: 2019.10 Zombieload is back. […]
Update: 2020.03 “The newly developed Rowhammer- attack TRRespass can crack the RAM-a security mechanism by many DDR4-DRAM-modules as well as LPDDR4 Chips. Until now, these were considered to be almost immune to Rowhammer attacks.” https://www.com-magazin.de/news/sicherheit/software-hammer-ram-schutz-attackiert-2515621.html Update: 2019.10 Zombieload is back. […]
might be also interesting: https://dwaves.de/2019/09/08/linux-bash-script-iterate-over-all-harddisks-in-the-system-and-check-their-smart-status/ and: https://dwaves.de/2019/09/06/linux-server-monitor-software-raid-mail-notification-on-failure/ harddisks… are blackboxes of data – if something fails… you do not repair – you replace. 65% of all harddisk failurs can be announced with smart. wohoo! so don’t rely on it 😀 […]
if you want to find out what chipset / mainboard your PC / Laptop / Notebook is using and other details about the hardware. unfortunately this is not a straight forward task… and works better / worse depending on the […]
src: https://homepage.cs.uri.edu/~thenry/resources/unix_art/ch01s07.html The Unix philosophy emphasizes building simple, short, clear, modular, and extensible code that can be easily maintained and repurposed by developers other than its creators. The Unix philosophy favors composability as opposed to monolithic design. Later summarized by […]
Update: 2019.01: Redhat CPU fixes overview: Is CPU microcode available to address CVE-2017-5715 via the microcode_ctl package? https://access.redhat.com/articles/3436091 Update: https://www.heise.de/newsticker/meldung/Intel-Prozessoren-undokumentierter-Debugging-Zugriff-erforscht-4256525.html update: from FSF: Dana Morgenstein: If there is an event at your university or in your community addressing the Intel chip […]
It is actually a scandal that the world depends on chips and operating systems – that are designed to do mass-surveillance – it seems – in order to build up a world-wide-dictatorship that no-one can escape… by information and money. […]
massively interesting article in German “how much do they know?” https://www.kuketz-blog.de/datenhaendler-wir-sind-glaesern-datensammler-teil1/ security alert: modern cpus from intel and amd have an build-in backdoor i just wonder when there will be an automatic self-destruction mechanism in your HARDWARE – “ah. You […]
Yes, they have it, and yes, it’s useful. Super Talent drives do have SMART, they use the smart tools to calculate life expectancy for the drive. Flash drives do develop errors over time, usually in the form of bad flash […]
screw AVM, screw Realtek, what one wants is should work out of the box with recent Linux kernels on Open Source drivers only: Recommended tested Hardware – Superb Wifi WLAN Adapter Chipset Atheros AR9285 Mini PCIE for GNU Linux Debian […]
“Bei Lithium-Ionen-Akkumulatoren führt eine Tiefentladung auf unter 2,4 V zu irreversibler Schädigung und zu Kapazitätsverlust. Sinkt die Spannung einer Zelle auf unter 1,5 V, sollte sie nicht mehr verwendet werden. Es ist sehr wahrscheinlich, dass sich Kupferbrücken ausgebildet haben, welche dann zu […]
open your terminal/command line: # while true ; do COMMAND ; sleep 1 ; done # executes COMMAND every second while true ; do ll ; sleep 1 ; done # show me content of current dir, every second (cool for monitoring […]
there are bugs in cpus! so don’t always say “the problem sits in front of the computer” – that’s simply not always true – if the hardware and software leaves the factory – with problems “preinstalled”. the problem started with […]