Problem: After connecting, openfire servers disconnects from Smack client giving an exception as below –
Connection XMPPTCPConnection[email@example.com/bot] (0) closed w
org.jivesoftware.smack.XMPPException$StreamErrorException: undefined-condition You can read more about the meaning of this stream error at http://xmpp.org/rfcs/rfc6120
<stream:error><undefined-condition xmlns='urn:ietf:params:xml:ns:xmpp-streams'/><text>You acknowledged stanzas that we didn't send. Your Ack h: 11, our last stanz
at org.jivesoftware.smack.tcp.XMPPTCPConnection$PacketReader.parsePackets(XMPPTCPConnection.java:1057) [smack-tcp-4.3.0.jar:4.3.0]
- In Openfire admin too, go to Server Manager => Server Properties
- Set stream.management.active = false
Problem : CQLSH never works after a usual install.
Install as below (on terminal)-
- Make sure to use pip, not pip3; python 2.7 not python 3.x.
- pip install cqlsh
- pip install cassandra-driver
- export CQLSH_NO_BUNDLED=true
- echo ‘export CQLSH_NO_BUNDLED=true’ >> ~/.bashrc
- cqlsh –cqlversion=3.4.4
Problem : /boot disk has no space, thus blocking installation or removal of any package using apt-get
In terminal –
sudo rm -r abi-4.4.0-89-generic abi-4.4.0-92-generic config-4.4.0-89-generic config-4.4.0-92-generic initrd.img-4.4.0-89-generic initrd.img-4.4.0-92-generic System.map-4.4.0-89-generic System.map-4.4.0-92-generic vmlinuz-4.4.0-89-generic vmlinuz-4.4.0-92-generic
(From the listed files, remove least two versions of every file)
This command searches of kernel files not in use and removes them to make space.
Problem: Ubuntu gives the error oss_audio: failed to open audio device /dev/dsp when trying to test festvox voice models.
Fix: On terminal-
sudo apt-get install pulseaudio
sudo apt-get install libpulse-dev
sudo apt-get install osspd
Problem: The following error occurs when installing scikits audiolabs
libraries sndfile not found in /usr/local/lib
libraries sndfile not found in /usr/lib
libraries sndfile not found in /usr/lib/x86_64-linux-gnu
The sndfile dev libs are missing (apparently)
sudo apt-get install libasound2-dev
sudo apt-get install python-dev python-numpy python-setuptools libsndfile-dev
sudo apt-get install libasound2-dev
Could fix the touch-pad of my Ubuntu system which went off due to an unknown reason with these commands –
- On terminal run –
- sudo rmmod i2c_hid
- sudo modprobe i2c_hid
- Restart the system.
This write up is about our experience with the Solar water heaters from Racold which we had installed at our apartment complex. To keep it short and precise, these are the reasons why you should AVOID buying Racold’s solar water heating solutions.
Low Build Quality
The 500 Litre tank leaks like a funnel just after two years. Apparently the welds just went off.
Short Sighted Design Choices
The tank is made of MS (mild steel). Even the so called technicians from Racold do not know how to weld and repair it.
Ridiculous Customer Care
This the most important reason why one should ditch Racold. Their customer care is an absolute mockery of everything customer-care.
- Their contact numbers are Non-responsive.
- Their contact emails are Non-responsive. (tried firstname.lastname@example.org, and email@example.com)
- Their WhatsApp contact guys are absolute useless’s who hide behind anonymity and keep repeating “our technician will call you”.(That is over a month of asking for updates on our complaint).
- Here’s a link to their straw-man contact-us page – http://www.racold.com/contact-us/
Just thought of sharing this.
If you buy a new laptop bag, you have to be careful to remove the small sachets that contain small silica balls (or whatever they are. See photo).
I allowed them to remain in the bag (new one from American Tourister), the sachets broke, and the released silica balls entered the USB, HDMI, LAN and audio slots of the laptop.
While I could get rid of them from other slots, a nasty particle is still stuck in the 3.5 mm audio slot. (Because I didn’t know of it and pushed in the audio jack, which took the darn ball further down the slot)
So yes, remember to to remove such sachets from your laptop bag before you use them.