Upgrade WSL (Windows Subsystem for Linux) on Windows 10

I had installed WSL (Windows Subsystem for Linux) a long time ago to gain access to Ubuntu 14.04 LTS directly from my Windows 10 Desktop. However, as time passes, Software grows old. Upgrading the Ubuntu Subsystem via apt-get update / do-release-upgrade should work, but that could have some nasty sideeffects, considering that the 14.04 LTS WSL release had been a beta test - so, a reinstall should be better.

Luckily, TechRepublic got this covered. Just open a CMD and run:

lxrun /uninstall /full /y

to uninstall the current WSL version.

Afterwards, try

lxrun /install

to reinstall it. With this "reinstall", Ubuntu 16.04 LTS will be installed.

Nonetheless, I recommend a nice

sudo apt-get update
sudo apt-get dist-upgrade

afterwards in your BASH session to get the WSL to the latest version ;).

[Security Spotlight] Upgrade OpenSSL to 1.0.1g - Heartbleed Bug - Urgent!

So, thats no joke: OpenSSL broke badly!
Here is the background: http://heartbleed.com/

And as there is no zero-hour-fix for Ubuntu (including 12.04 LTS...), I decided to take chances and overwrite my existing OpenSSL 1.0.1 with the new code. It worked out flawlessly - but your system could *REALLY* break. Thats as dirty as it possibly could get!

wget http://www.openssl.org/source/openssl-1.0.1g.tar.gz tar -xvzf openssl-1.0.1g.tar.gz cd openssl-1.0.1g/ ./config --prefix=/usr sudo make sudo make test sudo make install

[Ubuntu 12.04] EEE PC 1015 PN with Ubuntu 12.04 LTS

I could not help myself but felt the need to have at least one real "Dual Boot" system (not VMWare Stuff) - so I setup my Asus EEE PC 1015 PN with the Ubuntu 12.04 LTS according to mtrons excellent Tutorial ( https://sites.google.com/site/mtrons/howtos/eeepc-1015pn ) which worked out right out of the box.

But - as I haid some trouble with the old Broadcom Wifi/BT Card in Windows 7, I went for an Intel 6250 AGN/WiMax Card. I do not use WiMax and would love an BT option - but the price point of that card on ebay finally got me to press the "Buy now" button. I thought "Well, it is an Intel Card - that should work quite well and stop throwing me out of the University Wifi with no chance but doing an hard reboot of the Laptop to solve the problem" - yeah - it really did. BUT - somehow, after some time and updates to the Ubuntu System, I lost connectivity: Network Manager was nagging for the password all the time - without a reason. Finally I found the solution on this website: http://askubuntu.com/questions/104651/how-do-i-get-wireless-working-on-an-asus-notebook-u56e - with some changes.

From Kernel > 3.1 on, the wifi driver is not called iwlagn but iwlwifi, so your changes would go in that way:

sudo /etc/modprobe.d/iwl.conf

and add these options to the file. First does deactivate the not existing BT Module on the card, second does disable N networks, which could avoid other problems:

options iwlagn bt_coex_active=0
options iwlagn 11n_disable=1

Reboot and you are done

Another problem was the Optimus system: The Dual GPU Option of the system, packing an Intel GMA as well as an Nvidia ION Graphics on the board, with the choice of changing between both on the fly. That *did* work according to mtrons guide, BUT after an kernel upgrade - the acpi_call module did not work anymore - and with that the optimus tool. Help to that problem could be found here: http://hybrid-graphics-linux.tuxfamily.org/index.php?title=Acpi_call with the following changes:

cd /usr/src/acpi_call-1.1.1/
# got an newer version of acpi_call
sudo dkms add -m acpi_call -v 1.1.1
# did throw an error as the module already existed
sudo dkms build -m acpi_call -v 1.1.1
# rebuild the module
sudo dkms install -m acpi_call -v 1.1.1
# reinstalled it to the kernel
sudo modprobe acpi_call
# reload module
modinfo acpi_call
# show some infos

And thats it!

I am quite happy with the performance of Ubuntu on the system and I will keep it a while. I also tried the latest Debian, but was not that satisfied with it :/! So long!