wlug January 2021

wlug@list.waikato.ac.nz

7 participants
80 discussions

Raspberry Pi Foundation Launches $4 Microcontroller With Custom Chip

by Peter Reutemann

'Meet the Raspberry Pi Pico, a tiny little microcontroller that lets you build hardware projects with some code running on the microcontroller. Even more interesting, the Raspberry Pi Foundation is using its own RP2040 chip, which means that the foundation is now making its own silicon. From a report: If you're not familiar with microcontrollers, those devices let you control other parts or other devices. You might think that you can already do this kind of stuff with a regular Raspberry Pi. But microcontrollers are specifically designed to interact with other things. They're cheap, they're small and they draw very little power. You can start developing your project with a breadboard to avoid soldering. You can pair it with a small battery and it can run for weeks or even months. Unlike computers, microcontrollers don't run traditional operating systems. Your code runs directly on the chip. Like other microcontrollers, the Raspberry Pi Pico has dozens of input and output pins on the sides of the device. Those pins are important as they act as the interface with other components. For instance, you can make your microcontroller interact with an LED light, get data from various sensors, show some information on a display, etc. The Raspberry Pi Pico uses the RP2040 chip. It has a dual-core Arm processor (running at 133MHz), 264KB of RAM, 26 GPIO pins including 3 analog inputs, a micro-USB port and a temperature sensor. It doesn't come with Wi-Fi or Bluetooth. And it costs $4.' -- source: https://hardware.slashdot.org/story/21/01/21/1258214 Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 577-5304 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

2 months

CentOS Is Gone -- But RHEL Is Now Free For Up To 16 Production Servers

by Peter Reutemann

'Ars Technica: Last month, Red Hat caused a lot of consternation in the enthusiast and small business Linux world when it announced the discontinuation of CentOS Linux. Long-standing tradition -- and ambiguity in Red Hat's posted terms -- led users to believe that CentOS 8 would be available until 2029, just like the RHEL 8 it was based on. Red Hat's early termination of CentOS 8 in 2021 cut eight of those 10 years away, leaving thousands of users stranded. Red Hat's December announcement of CentOS Stream -- which it initially billed as a "replacement" for CentOS Linux -- left many users confused about its role in the updated Red Hat ecosystem. As of February 1, 2021, Red Hat will make RHEL available at no cost for small-production workloads -- with "small" defined as 16 systems or fewer. This access to no-cost production RHEL is by way of the newly expanded Red Hat Developer Subscription program, and it comes with no strings -- in Red Hat's words, "this isn't a sales program, and no sales representative will follow up." Red Hat is also expanding the availability of developer subscriptions to teams, as well as individual users. Moving forward, subscribing RHEL customers can add entire dev teams to the developer subscription program at no cost. This allows the entire team to use Red Hat Cloud Access for simplified deployment and maintenance of RHEL on well-known cloud providers, including AWS, Google Cloud, and Microsoft Azure.' -- source: https://linux.slashdot.org/story/21/01/20/2016202 Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 577-5304 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

2 months, 1 week

More On The NZ Reserve Bank Breach

by Lawrence D'Oliveiro

Seems hackers broke into a secure file-sharing service called Accellion, based in California. The RBNZ was using that to exchange documents with the likes of banks and insurance companies. <https://www.stuff.co.nz/business/123911764/reserve-bank-reveals-more-detail…>

2 months, 3 weeks

Outlawing Dark Patterns

by Lawrence D'Oliveiro

“Dark patterns” is a term coined to describe user interfaces designed to manipulate people into giving up time, money or personal data that they didn’t intend to. A common example is the obstacle course you often have to go through to cancel a subscription to something online. Another example is the use of countdown timers to rush buyers into hasty decisions. They may not be out-and-out deceptive, but they do come close. Now, the US states of California and Washington are looking to pass laws to restrict this practice. <https://arstechnica.com/tech-policy/2021/01/lawmakers-take-aim-at-insidious…>

3 months, 1 week

Firefox 85 Hammers the Final Nail Into the Adobe Flash Coffin

by Peter Reutemann

'With Mozilla's release of Firefox 85 on Tuesday, Adobe's once ubiquitous Flash technology is really gone for good. The software had been widely used to expand gaming, video and animation on the web, though Adobe stopped supporting it at the end of 2020. Firefox was the last major browser to support Flash. From a report: Apple, whose late boss Steve Jobs helped sink Flash by banning it from iPhones and iPads, ditched Flash with Safari 14 in September 2020. Google Chrome, the most widely used browser, completely excised it on Jan. 19 with version 88. Microsoft's Edge 88 followed suit on Jan. 21. The schedule of removals shows just how hard it is to advance technology foundations as widely used as the web. Browser makers for years wanted to remove Flash, replacing it with more advanced standards built directly into the web. Jobs' "Thoughts on Flash" letter in 2010 solidified the opposition, and Adobe started recognizing the software's doom by scrapping the Android version of Flash in 2011. It's taken years of effort to drop Flash completely. Adobe took until 2017 to announce that Flash would be completely unsupported at the end of 2020, and still some are willing to jump through lots of hoops to keep Flash around a little longer.' -- source: https://it.slashdot.org/story/21/01/26/1618254 Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 577-5304 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

3 months, 2 weeks

Google Threatens To Remove Search in Australia as Spat Escalates

by Peter Reutemann

'Google has threatened to disable its search engine in Australia if it's forced to pay local publishers for news, a dramatic escalation of a months-long standoff with the government. From a report: The proposed law, intended to compensate publishers for the value their stories generate for the company, is "unworkable," Mel Silva, managing director for Australia and New Zealand, told a parliamentary hearing Friday. She specifically opposed the requirement that Google pay media companies for displaying snippets of articles in search results. The threat is Google's most potent yet as the digital giant tries to stem a flow of regulatory action worldwide. At least 94% of online searches in Australia go through the Alphabet unit, according to the local competition regulator. "We don't respond to threats," Australia Prime Minister Scott Morrison said Friday. "Australia makes our rules for things you can do in Australia. That's done in our parliament. It's done by our government. And that's how things work here in Australia."' -- source: https://tech.slashdot.org/story/21/01/22/0339236 However, in related news: "Google Agrees To Pay French News Sites To Send Them Traffic" -- source: https://tech.slashdot.org/story/21/01/21/2316209 Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 577-5304 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

3 months, 2 weeks

TinyPilot KVM Over IP

by Lawrence D'Oliveiro

Just been watching this review <https://www.youtube.com/watch?v=CyEpshm16HY> of the TinyPilot KVM-over-IP box. It’s purchasable from the maker’s website for US$300-plus, which is a fraction of the price of most other KVM-over-IP products. It’s built around a Raspberry π 4, using the camera adapter for HDMI in (no use made of the GPIO connector at all). Of course this means it can only support a connection to a single server machine. The source code is on GitHub if you want to build that yourself. The base product offers insecure HTTP-only access; if you want HTTPS, you have to pay extra for the TinyPilot Pro software licence. For comparison, some reader comments mention an alternative “PiKVM” product -- has anyone heard of this?

3 months, 2 weeks

CERN Gets Its Open Hardware Licence Approved By OSI

by Lawrence D'Oliveiro

CERN wanted to come up with the hardware equivalent of open-source software licences. Such licences don’t really work well with hardware, because they use terms (like “linking” and “system libraries”) that aren’t applicable to hardware. So they worked with the Open Source Initiative (the custodians of the Open Source Definition) to come up with a selection of three licences, allowing for a choice of strong copyleft (GPL-equivalent), weak copyleft (LGPL-equivalent, I guess) and no copyleft at all. It seems these licences could actually be used for a combination of both hardware and software. <https://www.theregister.com/2021/01/29/cern_ohl_approved/>

3 months, 2 weeks

Cloning SSD's

by Ian Stewart

FWIW: My recent experiences with copying SSD's... I recently installed Ubuntu Mate from USB stick to a 120GB SSD. I then updated with all the latest patches. This took about 30 minutes. I then tailored my preferences of Firefox, Terminal, Pluma, etc. Created a Guest account. Installed the NZ dictionary, and added some applications. This took me another 30 minutes. I then needed to do this to 5 more computers. So, to prepare six computers would have taken me a total of about 6 hours. I considered using the utility "dd" to copy a clone of my master disk. Looking through stackoverflow<https://unix.stackexchange.com/questions/144172/full-dd-copy-from-hdd-to-hdd> I found the suggestion to use "cat". I.e. Boot Ubuntu from a USB stick and assuming sda is my master disk and sdb is the clone, then issue the command... $ sudo sh -c 'cat /dev/sda >/dev/sdb' I found this copying took about 15 minutes. However, it didn't give me any progress report during the copying sequence. I then... $ sudo apt install pv ...pv stands for "Pipe Viewer". For the next SSD drive to be cloned I issued the command... $ sudo sh -c 'pv /dev/sda >/dev/sdb' ...which then provided a progress bar that updated every second. With Samsung SSD 120GB drives I found the operation took 13 minutes 13 seconds with a transfer rate of 153MB/s. I later had built another master SSD on a Kingston 120GB SSD and cloned this to another Kingston 120GB SSD which took 10 minutes and had a transfer rate of 200MB/s. I found with the system still powered on, I could unplug the cloned SSD and plug in another blank SSD and start another cloning. Probably not a recommended practice. After booting the clone, I edited /etc/hostname to make each clone unique. Maybe there's something else I should change??? In summary, allowing for a bit of time to physically move the SSD's between machines, I was effectively completing the installation/updating/tailoring at a rate of three PC's an hour. I dunno if this was the right way or the best way, but, so far, the masters and all the clones seem to be working OK. cheers, Ian.

3 months, 2 weeks

Intel Iris Xe Video Cards Now Shipping To OEMs: DG1 Lands In Desktops

by Peter Reutemann

'Ryan Smith, writing at AnandTech: Following plans first unveiled last year during the launch of their DG1 GPU, Intel sends word this morning that the first Iris Xe video cards have finally begun shipping to OEMs. Based on the DG1 discrete GPU that's already being used in Intel's Iris Xe MAX laptop accelerators, the Iris Xe family of video cards are their desktop counterpart, implementing the GPU on a traditional video card. Overall, with specifications almost identical to Xe MAX, Intel is similarly positioning these cards for the entry-level market, where they are being released as an OEM-only part. As a quick refresher, the DG1 GPU is based on the same Xe-LP graphics architecture as Tiger Lake's integrated GPU. In fact, in broad terms the DG1 can be thought of as a nearly 1-to-1 discrete version of that iGPU, containing the same 96 EUs and 128-bit LPDDR4X memory interface as Tiger Lake itself. Consequently, while DG1 is a big first step for Intel -- marking the launch of their first discrete GPU of the modern era -- the company is planning very modestly for this generation of parts. The first DG1 GPUs were shipped in the fall as part of Intel's Iris Xe MAX graphics solution for laptops. At the time, Intel also indicated that a desktop card for OEMs would also be coming in 2021, and now, right on schedule, those desktop cards have begun shipping out.' -- source: https://hardware.slashdot.org/story/21/01/28/1649204 Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 577-5304 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

3 months, 2 weeks

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wlug January 2021