2018 Newsletter: 57/68 — PreviousNext — (Attach.)

Sydney Harbour

Hello and Welcome,

Club News:

Our new Epson projector, model EB-2250U, is a great success. We used it for the first time at the 23rd October Main meeting last Tuesday with Telstra presenting their very interesting Locator technology.

We are very impressed by the 5,000 lumen HD display, with 1920 × 1080 pixels, as well as the full, bright whites and crisp black text on the screen.

Well done, Alex and Josephine for this great choice of projector.

We can't wait to use it at the next SIG meetings.


Meeting This Week:

Penrith Group - Saturday Nov 3rd - 2:00 pm - 5:00 pm

The meeting normally starts with a Q&A session around the table to enable members to share problems, advice and computer tips.

When this is concluded, the group may consider further topics of interest.


Meetings Next Week:

Friday Forum - Friday Nov 9th - 9:30 am (10:00 am meeting start) - 12 noon
Communications - Friday Nov 9th - 1:00 pm - 3:00 pm

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Tech Tips:

DATA LOSS 1 — “Windows 10's October 2018 Update Is Probably Delayed Until November (And Here's Why)”:

See the How-To Geek article by CHRIS HOFFMAN @chrisbhoffman OCTOBER 24, 2018, 4:29PM EDT.

“Microsoft stopped offering Windows 10's October 2018 Update on October 6, as it was deleting some people's files. Now, another ugly data loss bug has reared its head, and it won't be fixed until November.

M. Hamer, a Microsoft forum agent and moderator, explained this issue on October 23:

There is a known issue in the Windows 10 October Update where the consent prompt "Do you want to replace these files" is missing when copying contents from a .ZIP file.

With the Windows 10 October 2018 Update, if you copy or move files from a .ZIP file (without first "extracting" the contents) into a new destination folder that contains duplicate filenames or is write-protected, you don't get a "Do you want to replace these files" prompt. It will appear that the files were overwritten, when in fact the copy action for those files is not executed and files have not been overwritten.

That all sounds a little dry and boring, but it's serious: You could lose data when working with zip files! In fact, he goes on to warn more about this more explicitly:

Important: Do not attempt to Cut and Paste items from a compressed (.zip) folder. This may result in unintentionally deleting items that may not be recoverable.

Microsoft is working on a resolution and estimates a solution will be available in early November for this issue.

After all the bad press, we can't imagine Microsoft will want to re-release the October 2018 Update with another bug that can potentially lead to data loss. This one doesn't seem quite as bad as automatically deleting entire folders during the upgrade process, but it's still not great. And, if Microsoft starts rolling out the update with this bug, it's sure to bite some people. That means Microsoft has to wait until November.”

Read more

DATA LOSS 2 — “Windows 10 version 1809 plagued by another data loss issue”:

See the ghacks article by Martin Brinkmann on October 20, 2018 in Windows — 54 comments.

“Things don't look that good for Windows 10 version 1809, the October 2018 feature update for Microsoft's Windows 10 operating system.

Microsoft had to pull the update days after its release because of a data loss issue that impacted some devices. While the issue was not very widespread — it only affected 1 in every 10,000 users — it was serious enough to pull the brakes and do another round of bug fixing and testing. The issue was a major issue but not the only issue that Windows 10 version 1809 users were plagued by.

Microsoft pushed an updated version to the Insiders' stream already but has yet to unlock the update again on Windows Update or other distribution channels for Stable devices.

The data loss issue back then affected systems on which some default folders such as Documents or Pictures were moved to another location without moving the files they contained. The bug removed the files in the original folder.

The new bug appears to affect operations with archives. A Reddit user reported that Windows 10 version 1809 would no longer prompt the user for conflict actions, e.g. when a file exists in the destination folder and is about to be copied to that destination.

Previous versions of Windows 10 would prompt the user for an action such as replacing the original file with the new copy or skipping it. Windows 10 version 1809 does not prompt according to reports but overwrites automatically in the selected destination folder.

Another report, this time from a thread on Ask Woody, suggests that it may also happen that the same operation fails silently by not overwriting files at all and not prompting users about it.”

Read more

“'Twisted' fibre optic light breakthrough could make internet 100 times faster”:

See The Guardian article by Naaman Zhou @naamanzhou Wed 24 Oct 2018 20.00 AEDT.

“A new development in fibre optics could make internet speeds up to 100 times faster — by detecting light that has been twisted into a spiral.

The research, published in the journal Nature Communications, can be used to easily upgrade existing networks and significantly boost efficiency, scientists say.

Fibre optic cables use pulses of light to transmit information, but currently information can only be stored through the colour of the light, and whether the wave is horizontal or vertical.

By twisting light into a spiral, engineers effectively create a third dimension for light to carry information: the level of orbital angular momentum, or spin. "It's like DNA, if you look at the double helix spiral," said Min Gu from RMIT University. "The more you can use angular momentum the more information you can carry."

Researchers in the US had previously created a fibre that could twist light, but Gu's team is the first to create a reasonable-size detector that can read the information it holds.”

Read more

“What is WiGig, and How Is It Different From Wi-Fi 6?”:

See the How-To Geek article by CHRIS HOFFMAN @chrisbhoffman OCTOBER 21ST, 2018.

Wi-Fi 6 is on the way, but it isn't the fastest wireless technology you can get. WiGig is designed for super-fast speeds over short distances, and an improved version is coming in 2019.

WiGig transmits data wirelessly on the 60 GHz frequency, unlike Wi-Fi 6 and other "normal" versions of Wi-Fi that use the 2.4GHz or 5GHz frequencies.

The 60GHz frequency is less congested than 2.4GHz or 5GHz, which means it can transfer more data at once. That translates into faster wireless data transfer speeds — in other words, faster Wi-Fi when using WiGig.

Specifically, the current version of WiGig is promising speeds of around 5 Gbps in the real world, while Wi-Fi 6's real-world speeds will probably be more around 2 Gbps. And there's a newer, better version of WiGig on the way, which should be even faster at around 10 Gbps.

That sounds great, but there's a downside. Those shorter wavelengths mean that WiGig has a much smaller range. The Wi-Fi Alliance says the current version WiGig can support distances of up to 10 meters thanks to beamforming. However, a WiGig signal will have trouble getting through walls or other obstacles.

WiGig devices can drop to the 2.4GHz or 5GHz frequencies when necessary. But, while on those frequencies, they aren't getting WiGig's super-fast speeds.”

Read more

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Bob Backstrom
~ Newsletter Editor ~

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