91–100 of 159 posts
I wonder why all of the display backlights are on? I understand having the laptops open to stop them going to sleep without an external display, but I'd've thought you could turn the backlight all the way to "off".
There was similar post with ARM Chromebooks. A few years ago it was impossible to find stable ARMs which could sustain decent load without crashing. Company had to buy bunch of Chromebooks, strip batteries and put them into rack.
Well, no. The guy putting that rack together didn't know what he was doing and insisted on using the stock AC adapter for the devices. You NEVER use the stock AC adapters in a cluster. They are (usually) made to be cheap and not operate at full load. Maybe 5% will fail under continuous full load. Put 16 in a cluster and now you are looking at a 60% chance of a single failure.
ALWAYS ditch the bundled AC adapter and use a single, good quality, high power PSU that branches out to all the boards. 5 volts and 40 amps, for example. These PSUs are more like 99.9% reliable, and as a bonus output much cleaner power.
The only reason that this guy had success with Chromebooks is because laptop PSUs are typically sized at 3x capacity (for battery charging). Running a stock PSU 24x7 but only at 30% output greatly reduces the failure rate.
edit:
http://www.systemcall.eu/blog/2014/06/trashing-chromebooks/
https://news.ycombinator.com/item?id=7876235
Besides ignoring the power supplies, the original author used SD cards on the HK boards instead of eMMC, which is another reliability no-no. Though HK is pretty good about shipping quality PSUs with their hardware, so I suspect it was uSD being flaky in this guy's case.
Only just realised from this that MacBook Pro's no longer have an Ethernet port! When did that happen? You need to buy an expensive thunderbolt adapter. I can understand removing it from the ultra portable super-thin models but not from the top end professional model.
If your laptop and wireless router supports 802.11ac then what are the most common reasons to still prefer Ethernet port? Is it mostly about spectrum getting full or security concerns? I just noticed that I haven't used Ethernet cable for the last few years.
Earlier quoted context omitted.
Or, you know, you could buy a wifi router...
One AP per 5 active devices, give or take. Plus positioning them and managing their power and ensuring they do proper hand-off as you move around the office, plus... Providing reliable wifi for multiple people with multiple devices is a hard challenge.
Earlier quoted context omitted.
Here in Switzerland companies stopped granting guest access over the last few years. You're expected to bring your own infrastructure which usually boils down to tethering your mobile. I can see that this is very much country dependent (we have truly unlimited plans that allow tethering), but at least for me, the smaller size of the machine trumps the ability to plug ethernet cables due to the general lack of availab…
> Here in Switzerland companies stopped granting guest access over the last few years. Why, they don't have the skills to create a private wi-fi network for guests?
I never use guest networks for that exact reason. I know that my traffic and my connection is my own, and works. Way easier imo.
Only just realised from this that MacBook Pro's no longer have an Ethernet port! When did that happen? You need to buy an expensive thunderbolt adapter. I can understand removing it from the ultra portable super-thin models but not from the top end professional model.
Why are you keeping the lids partially open and drawing excessive power for the displays + backlight, instead of just using InsomniaX [1] ? [1] - http://www.macupdate.com/app/mac/22211/insomniax
Because 3d printing is cool and trendy.
Only just realised from this that MacBook Pro's no longer have an Ethernet port! When did that happen? You need to buy an expensive thunderbolt adapter. I can understand removing it from the ultra portable super-thin models but not from the top end professional model.
If your laptop and wireless router supports 802.11ac then what are the most common reasons to still prefer Ethernet port? Is it mostly about spectrum getting full or security concerns? I just noticed that I haven't used Ethernet cable for the last few years.
Only just realised from this that MacBook Pro's no longer have an Ethernet port! When did that happen? You need to buy an expensive thunderbolt adapter. I can understand removing it from the ultra portable super-thin models but not from the top end professional model.