Posts Tagged ‘open source’

Looking for open source and privacy friendly android apps?

January 18, 2017

If you are interested in open source and privacy friendly android apps you should have a look at this two projects.

The group Privacy Friendly Apps are a collection of Android-Applications, which are optimized based on privacy. This means that only a minimum of permissions is used. There are no unnecessary permissions, e.g. a torch application would ask for a permission to read the contacts.

They provide apps like dicer, sudoko, weather and more. You can find a list of all their apps in the google playstore.

Simple Mobile Tools: A group of simple, stupid, open source Android apps with customizable widgets, without annoying ads and unnecessary permissions.

They develop camera, file-manager, gallery apps and more. You can find the apps on github/f-droid and play store.


Mozilla Flyweb: How to get rid of custom apps to communicate with IOT devices…

September 8, 2016

Mozilla has an interesting project called flyweb. If you want to know what it is about and why you should have a look at it watch this video.

This specification aims to allow web applications to connect with and communicate to each other over local-area transport protocols. In particular, this specification aims to bring the web’s client/server application model to inter-device communication. The web’s application architecture enables an application running on a server to dynamically and incrementally send application state and logic to an intermittently connected client. This model enables a powerful multi-homed application architecture.

Lenovo T460(s) suspend problem while on battery

March 26, 2016

In this blog post I want to summarize my investigations about problems concerning suspend with my lenovo t460 notebook. (Note: This problem seems to also exists with the lenovo T460s notebooks. More information about debian on the t460 can be found here.)

(The informations here are verified with a debian testing installation with kernel version 4.4. The problems is reported by people using other distributions too.)

What is the problem and how can you reproduce it?

  • If the device is on the AC, closing the lid causes the notebook to suspend. This works perfectly – in other words: The notebook wakes up after opening the lid and is usable.
  • If the notebook is on battery, closing the lid causes the notebook to freeze. In other words: If I open the lid again, everything is frozen. Not only the UI but I’m also not able to change to TTY1, 2, ..
  • Interestingly enough, manually suspending with systemctl suspend works without a glitch.

I reported this problem on the debian forums and the thinkpad subreddit.

There is an entry in the kernel bug tracker Bug 113551 – intel_pstate=no_hwp else Thinkpad T460s freezes on lid close on battery power. The bug entry indicates that the problem is also to be found kernel versions up to 4.5.0-rc6. It also looks like the source of the problem is found, patches are being tested. I also filed a debian bug entry for this problem as was suggested to my when asking in the debian IRC channel.

So it seems that newer kernel versions won’t have this problem. There is a workaround till this happens. You can add the intel_pstate=no_hwp parameter to the GRUB_CMDLINE_LINUX_DEFAULT section of the /etc/default/grub file. Attention: Don’t forget to run update-grub after every change to this file. Also: This may cause your notebook to use more power – the battery may empty itself faster.

I will try to update this blog post after more information, changes in the status of this problem occur. I maybe even try to patch the debian kernel with a patch and test if this helps to fix the suspend problem.

Update 2016-04-28: After upgrading to the Debian 4.5.1-1 (2016-04-14) x86_64 GNU/Linux kernel version, the suspend problem is gone. I can close the lid while being on batteries and the notebook is going into suspend and leaves it correctly.

MySQL – ERROR 1045 (28000): Access denied for user

February 16, 2016

Everybody knows Mysql. Normally it “just works”. But a few days ago I tried to connect to a mysql server with the mysql command line client and got this error.

ERROR 1045 (28000): Access denied for user ‘root’@’localhost’ (using password: YES)

Funny thing: If you want to use the mysql command client to connect with the mysql server, you can do something like this

mysql -u root -pPassword

Where does it try to connect itself? To localhost and the well known port 3306? Wrong. It tries to access the mysql socket file. Which in my case, was not existing (because I had mysql in a docker container). I just wanted to connect via IP address and port.

Next try: Access the server via host parameter

mysql -u root-pPassword -h127.0.0.1

But: Same error! If the mysql client sees the ip address, it tries the socket file again! You have to explicitly tell the mysql client to use TCP to connect.

mysql -u root-pPassword -h127.0.0.1 –protocol=tcp

(Thanks to stackexchange for this information!)

Alternative to GoogleReader? rsslounge

August 25, 2011

Maybe you are one of the people who is using GoogleReader not because you like Google that much, but because you are not aware of a nice online alternative.

organize and read your feeds, set priorities, filter your feeds and items and fetch news, images and photos in a really easy way
simple ⋅ free ⋅ open source

You can install rsslounge on your own server. You just need apache/php/mysql.

Update September 2014: I’m now using Tiny Tiny RSS which is great. Easy to install and it has an open source android client too.

Where is the RSS Feed Icon in Firefox 4?

July 31, 2011

Have you ever asked yourself: Where the $&”(% is the RSS Feed Icon in Firefox 4?” I did.

By default the new RSS web feeds subscription button is not visible. To add this to the toolbar ( or navigation tool-bar as it is called in Firefox 4 ) just right-click on the toolbar and select customize. In the customize tool bar window that appears, click and drag the “Subscribe” icon to the desired location. Done.

More Details can be found on

Use blogilo with wordpress

June 3, 2011

Blogilo is a Free/Open Source Blogging client, focused on simplicity and usability.

It is a KDE program, which allows you to create a blog posting offline and submit it to your blog. Using a normal client instead of a browser can be more convenient.

I’m using wordpress with a handfull of a blogs and discovered a problem with blogilo: It only allows me to submit postings to my primary wordpress blog. For everyone who has the same problem, there is an easy solution

BTW, To get out of this problem, You can set as your blog url and try! It will fetch all of your blogs, and you can select which one you want!

Howto: Extract images from a PDF document

January 2, 2011

If you find youself struggeling with exporting images from PDFs, don’t give up, there is a solution

… if you’re in my situation (no desire to use Adobe’s bloat) or you just need a small handy command line tool for linux (or other “unixes”): try pdfimages. It’s part of the xpdf package, which is probably available for all major linux distributions.
Usage is very straightforward:
pdfimages -j foo.pdf  bar

You can read the rest of the article on Stefaan Lippens Blog.

KDE bug #243160

July 9, 2010

Today I (hopefully) start a new tradition. Presenting bugs in free software I care about (caring about the software AND the bug *g*).

I’m starting with bug #243160 in the KDE bug database.

Check for free space first when copying one file to flash memory
If you copy one file to a flash memory – file size has to be bigger than free space on flash memory – it starts copying the file and aborts only after the free space is filled up

I think it is a rather easily reproduceable bug which potentially hits a lot of people. If you want this bug to be closed, vote on it! Maybe you even have an idea how to fix the problem or where to search for the cause of it. Just comment here or even better in the kde bug database.

thx to my brother for filing the bug in the first place.

Sluggish text input in kde

July 7, 2010

I use kmail a lot and kile sometimes. Something which bothered me a lot was the sluggish text input of these two kde programs. Characters were shown with a notable delay which made writing painfully.

But  there is a workaround which solved the problem for me.

kmail –graphicssystem raster

Start the program from the console with the additional option –graphicssystem raster

More on this topic can be found in this bug entry