December 2018 - wlug - list.wlug.org.nz

Stopping Alert Volume Going To 100%
by Lawrence D'Oliveiro 20 Jan '21

20 Jan '21

For quite a while now, I’ve been annoyed by the system notification volume going to 100% on my Debian systems, regardless of my attempts to set it to a lower level. For example, when I open the KDE System Settings app, change something, then try to close the window, the sound that accompanies the save/discard/cancel alert is always startlingly loud. I think I have finally found a fix: in your /etc/pulse/daemon.conf, put in a line saying flat-volumes = no (You should find an existing comment “; flat-volumes = yes” that indicates the default.) You can make this new setting take effect in the current session immediately without having to logout or reboot, by executing the following as the currently-logged-in user: pulseaudio -k (This kills and restarts the PulseAudio daemon for your user session.) There are several discussions of the pros and cons of this issue online, going back some years. For example, here <https://bugzilla.redhat.com/show_bug.cgi?id=1265267>. Also a mention about the “flat-volumes” setting in the ever-reliable Arch Linux Wiki here <https://wiki.archlinux.org/index.php/PulseAudio>.

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Does Wi-Fi Security Really Matter?
by Lawrence D'Oliveiro 11 Apr '19

11 Apr '19

Seems the Wi-Fi Alliance is having yet another crack at coming up with a really secure protocol, this time to be called WPA3 <http://www.theregister.co.uk/2018/01/09/wi_fi_wpa3/>. Does anybody care? Remember that on the Internet, security is implemented between the endpoints, the protocols are designed not to care that everything in-between might be pawed through by eavesdroppers, or even active attackers trying to inject fake data.

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Banana Pi 24-Core ARM Server Running Ubuntu Breaks Cover
by Peter Reutemann 27 Dec '18

27 Dec '18

'ARM-based server processors have threatened to take on Intel in the data center for some time but not much has materialized thus far in terms of significant deployments. However, a new breed of low cost ARM server implementations may be in the works with a many-core platform called Banana Pi. The latest Banana Pi device being teased is something very different in the form of a 24-core ARM server that speculation suggests might be sold as a Banana Pi server board or as a finished server product. A video has surfaced that reportedly shows a 24-core ARM Cortex-A53 processor with 32GB of RAM, though the OS only sees 29.4GB of that RAM. The OS is Ubuntu 18.04.1 LTS with MATE desktop. Unless the processor used in this device is something unannounced, and that seems unlikely, the chip itself would likely be a SocioNext SC2A11. The same processor is used in the Linaro Developer Box. The demo shows the server fully loaded at 100% CPU utilization building a Linux kernel and reportedly the system also supports NVMe storage as well as TensorFlow workloads for machine learning. Not much else is known about the system at this time but it's an interesting development in the Linux server space to be sure.' -- source: https://hardware.slashdot.org/story/18/12/27/0556243 Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 858-5174 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

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Requesting The Data You’ve Left Online
by Lawrence D'Oliveiro 26 Dec '18

26 Dec '18

Article from a correspondent for the Otago Daily Times <https://www.nzherald.co.nz/nz/news/article.cfm?c_id=1&objectid=12182555> about what he discovered when he asked Google, Facebook, the NZ Police, the NZSIS and various credit ratings companies what information they had on him. All except one responded with rather sobering amounts of personal detail.

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LibreHunt: The Linux Distro Counsellor
by Lawrence D'Oliveiro 23 Dec '18

23 Dec '18

Here’s a site <https://www.librehunt.org/> which purports to suggest a suitable Linux distro for you, based on your answers to questions about your ability, needs etc. The selection is made from a “curated” list of just 44 distros, to simplify things.

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Word For The Week: “Kaomoji”
by Lawrence D'Oliveiro 20 Dec '18

20 Dec '18

For those who might previously have gone “(＠_＠)” or “¯\_(ツ)_/¯” when they heard this word, here it is all explained: <http://kaomoji.ru/en/>. So now you can be all “\(^ヮ^)/” instead. Actually I came across that word in this article <https://arstechnica.com/gadgets/2018/12/windows-10-will-make-it-easier-to-%…>, which reports that Windows 10 will make it easier to enter these character sequences.

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Bye bye Mongo, Hello Postgres
by Peter Reutemann 20 Dec '18

20 Dec '18

'In April the Guardian switched off the Mongo DB cluster used to store our content after completing a migration to PostgreSQL on Amazon RDS. This post covers why and how' -- source: https://www.theguardian.com/info/2018/nov/30/bye-bye-mongo-hello-postgres Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 858-5174 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

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Facebook Does Not “Sell” Your Data, But ...
by Lawrence D'Oliveiro 20 Dec '18

20 Dec '18

... they sure as hell have been rather free and easy in sharing it with others <https://www.techdirt.com/articles/20181219/10370941268/facebooks-latest-pri…>. Seems a bunch of companies have had extra-privileged access to user data on Facebook, and they in turn supplied information about those users back to Facebook. This is how the “People You May Know” feature is able to make links like between different patients of the same psychiatrist, and other things equally dodgy ethically, if not downright illegal (or at least they should be). And this may be how Amazon was able to make a (spurious) association between a book reviewer and the book author, and disallow the review on that basis, just because the reviewer had previously followed the author on Facebook.

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kflickr wants http/ssl
by Barry Marchant 19 Dec '18

19 Dec '18

Hi all, When I try to start kflickr from cmd line I get a msg HTTP request to Flickr.com failed. (msg: SSL is required). Am I missing a pkg? or is there another problem? System is x86-64 running Mageia5 TIA Barry

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How Computers Got Shockingly Good At Recognizing Images
by Lawrence D'Oliveiro 19 Dec '18

19 Dec '18

Some good background on the origins of all the current hubbub over automated image recognition: <https://arstechnica.com/science/2018/12/how-computers-got-shockingly-good-a…>. A key breakthrough came in 2012, when a team at the University of Toronto combined the “convolutional” neural network concept with a massive deployment of sheer computing power to leave its competitors in the dust in the “ImageNet” image-recognition competition that year. That team are now working at Google. Oh, and the recognition algorithms are now scoring better than many humans in some areas.

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