Defence radar could interfere with NBN

Glenn Odlum, a principal engineer in Defence’s spectrum office, said Defence used spectrum between 3100 MHz and 3600 MHz for a “critical Defence radar capability”.

He indicated the impact of having public fixed wireless services and Defence radar in the same band remained unknown.

Oops?

via Defence radar could interfere with NBN – Telco/ISP – News – iTnews.com.au.

These graphs show the impact Netflix is having on the Australian internet

Overall, the increase has seen the traffic IX Australia passes through its network jump 50 per cent – from 30Gbps to 45Gbps in recent days (and it’s still growing).

I guess Australians really were just waiting for Netflix.

via These graphs show the impact Netflix is having on the Australian internet.

‘Could not copy file’ error when upgrading Wordfence plugin

Problem

I routinely update my WordPress Plugins and found when updating Wordfence I received the following error:

Installing Plugin: Wordfence Security 5.7.8

Downloading install package from https://downloads.wordpress.org/plugin/wordfence.5.7.8.zip…

Unpacking the package…

Could not copy file. wordfence/images/wordfenceFalcon.png

I tried a second time and received the same error for a different file.

Resolution

Searching WordPress support forums I was able to find a solution that worked.

I SSH’d on to my server and located the /wp-content/upgrade/ folder for my WordPress install. Inside I found a folder called wordfence.tmp

I deleted this folder completely by running sudo rm -rf /wp-content/upgrade/wordfence.tmp

Once the file was deleted I was able to perform the upgrade as normal.

Links

WordFence Upgrade issue on WordPress Support Forums

Japanese companies demo 40Gbps passive FTTP tech

The current generation of passive optical networks provide 2.488Gbps downloads and 1.244Gbps upload speeds – 10/2.5Gbps 10-GPON deployments are rare.

Japan’s Nippon Telegraph and Telephone Corporation (NTT) and Oki Electric Industry announced a successful demonstration of a passive optical access system that provided 40Gbps over 40 kilometres, serving 1024 users – 40 times the transmission capacity of existing systems, and 32 times more users than today’s passive optical networks (PONs).

Sure glad we are moving away from FTTP model for the NBN. That technology is clearly not future proof /sarcasm.

via Japanese companies demo 40Gbps passive FTTP tech – Networking – News – iTnews.com.au.

Running 3 Monitors off an Early 2008 Mac Pro with a Radeon HD 5770

Problem

We had an Early 2008 Mac Pro and decided to finally upgrade the video card. We found an ATI Radeon HD 5770 (Mac version) for a reasonable price. We needed to drive 3 screens from the card but hit some issues.

The Radeon HD 5770 has 3 ports – one DVI port and 2 mini display ports. I was able to drive 2 of the monitors without issue using the DVI port and a Mini DisplayPort to DVI cable. Attempting to use the third port resulted in no video on the third screen.

Googling found many articles about using 3 screens for the 2009, 2010 and mid 2012 Mac Pro models, but nothing official mentioned the early 2008 Mac Pro model. Even worse there were mixed opinions on whether it was possible to drive 3 screens at all.

Resolution

Luckily the solution was pretty simple in this case.

You need to ensure the type of DVI to Mini DisplayPort adapters you are using are active adapters as passive adapters (which I had) will not work for 3 screens.

You will note that in most cases the active adapters cost quite a bit more then the passive ones. In this case I can confirm I bought some cheapies off eBay and these still worked without issue, allowing the Mac Pro to drive all 3 screens at native resolutions.

Mac2008-2 Mac2008-1

Links

eBay auction for mentioned passive adapters

Apple Mini DisplayPort adapter FAQ

Mac Pro (Early 2009, 2010, Mid 2012) – Issues with three displays and multiple DVI, HDMI connections

Mac Pro (Early 2009, 2010, Mid 2012) – Supported display configurations