I am having some issues to get back to function my bluetooth (OS X El Capitan V.10.11.3, after the update), just presents a message as NOT AVAILABLE. I tried This solution without any response.
Later, I tried to reboot the SMC like the following:
How to Reset SMC in a MacBook Air, MacBook Pro Retina, or MacBook
Pro’s (with non-removable batteries)
Step #1. Turn off your MacBook (any of the above version). Step #2.
Attach the power adapter to your Mac. Step #3. Press
Control+Shift+Option keys and power button together for some time and
then release the keys. Ctrl, Shift, Option, and Power Key Combination
Step #4. Start the boot as usual.
From here.
Also not working with my issue.
It's really frustrating, damn macs.
Had this problem since 2015 usually after waking the computer, Bluetooth would show as unavailable and I have tried just about everything suggested by answers I found online. The only solution I have come across that works 100% for me is by going to System Preferences -> General -> unchecking Allow Handoff between this Mac and your iCloud devices
It has been a month of observing this problem that occured daily and never had an issue afterwards. Hope this might help some of you out there.
Related
I've looked around a lot at many people's different questions and can't find one that is the same situation as the problem I'm having. Essentially a friend brought me an old PC of theirs with the request that there are some files they want taken off the hard drive. Unfortunately, their version of Windows had corrupted, so my solution was to boot Ubuntu from a USB drive without affecting the hard drive, to access the files and then the computer is going to scrap anyway. Unfortunately, as soon as the ubuntu software starts to load the lights on the keyboard and mouse turn off and when I eventually get to the option of 'Try Ubuntu', neither are responsive. I've tried restarting, I've tried different ports, I've tried unplugging and plugging back in, I've tried a different keyboard and mouse but I cannot find a solution. I installed the latest version of ubuntu from their website. I can use the keyboard in the BIOS settings etc. Anyone know what is happening? All help is greatly appreciated.
I have been working with web-bluetooth for the past several months on iOS and ChromeOS without any problems. But today, I tried to run some of my examples on Windows for the first time, and to my surprise, most of the things I had implemented didn't work with Windows. I am able to successfully connect to my peripheral, but whenever I try reading or writing anything to a custom service with a custom characteristic, I get the error "GATT operation not authorized". I have tried looking around but there is no information anywhere about this.
I am including below the simplest example I have which is just for turning the LEDs on / off on an nrf52832 board. There is only one custom service and one custom characteristic implemented, the value of which controls the states of the LEDs. This works without any problems on Chromebooks and Macs but does not work on Windows. Here is the link to this simple project including the embedded code and the web-app.
https://github.com/shtarbanov/WebBluetooth-Feather-nRF52832/tree/master/LED%20Control
I have made two implementations of the same thing, one based on promises and another based on async-await located in the folders "WebApp (Async)" and "WebApp (Promises)", respectively. Both of those implementations work fine on Mac and Cromebook, but not on Windows.
It is a known issue that secure characteristics are not accessible using Web Bluetooth on Windows. On other platforms the pairing occurs automatically, but not on Windows. There is an issue tracking this:
https://bugs.chromium.org/p/chromium/issues/detail?id=960258
Stuck with this also and as for workaround i can recommend for windows platform to pair device firstly using windows itself and than to pair it via browser(as a workaround). Not much but hope this helps, at list a little.
P.S. it should be paired via windows only once, so PC will remember device, and than you can pair via browser as long as PC remembers device.
I acquired a batch of WT0490 wearable pdas with detachable scan head, so converted an application originally made for Windows Mobile (which has been running perfectly for several years) to run on the WT4090s. The devices use these versions:
Windows CE 5.0
EMDK 2.6
ASP.net CF 2.0
Since rollout I've seen some very frustrating behaviour, which seems to start happening after the devices have been operating a few days. Users are reporting the following error:
Unexpected error in application
SCAN_Enable
There doesnt seem to be any noticeable pattern, several devices will be working perfectly for a few days then suddenly this error will show. THen a few days and a few reboots later they work again.
All devices were taken right back to stock settings then our cabs deployed to them. All identical models. We've tried altering memory allocation, swapping scanner headers etc but there is no pattern.
The error seems to occur on load of the first form after login, the login screen displays a list of users in a dropdown with a password box so that part of the app works ok, it seems to be when the scanner is initialised that this failure happens.
I had 40 devices, now 30+ have gone down with this same issue so my gut is telling me its a software issue but as yet ive not been able to find out why.
We've tried warm boots, cold boots, complete reprovisionings as well. We have a couple of dev units that don't show the problem although they are not in regular use so maybe we just haven't seen the problem 'yet'.
I hope someone out there has had this issue and knows how to fix it.
Thanks in advance.
WT4090 was built by Motorola Solution enterprise business, now part of Zebra Technologies. The WT4090 is currently in EOS (End Of Sales) but is still supported by Zebra if you've a maintenance contract.
You can check if you've the latest OS version and fixes installed on the device looking on Zebra Technologies support website.
For question on how to develop for Zebra Technologies devices you can take a look at Launchpad, Zebra's developer community website.
It's Worth noting that these devices have detachable barcode scanners - so if the scanner is not correctly attached, you get a SCAN_Enable error.
If you don't release the scanner, you can also see this error as a previous form could have the scanner blocked.
You may also find you have the ScanWedge app running - this will also block the scanner so you cannot get it enabled. The EMDK needs exclusive access to the scanner to enable it.
Running an Apple USB keyboard (the large one with a numpad)
I'm unable to use the ALT-key, so I can't access fairly vital symbols like: [] and {}.
Swedish characters doesn't work either, even though it's less of an issue.
I've followed the instructions here:
https://wiki.debian.org/Keyboard
But regardless what I set, I can't notice any differences (even after reboot).
The server is setup on a VPS so I'm using VNC to access the console. I'm using the built in Screen sharing client of OS X Mavericks.
Any help would be very much appreciated
/J
Wasn't a keyboard problem at all.
Seems the problem is with the built in VNC client in OS X Mavericks.
If I use a Java client the keyboard works great.
I have been using HHKB Pro 2 for almost a year, one at home and one at work. Now I have to work with two computers (PC and Mac) for which I decided to buy KVM switch.
I picked one and expected nothing wrong with that, but when I plugged it in, HHKB was not working either with PC nor with Mac. I tried several keyboards and all worked flawlessly expect the mentioned HHKB. I tried the second one with the same result. With that in mind, I purchased another KVM switch, which was hardware switched (the previous one listened to ScrollLock which is supported by HHKB by using Fn key). To my surprise, it didn't work either.
Now I have tho KVM switches that work flawlessly with any keyboard BUT that damned HHKB Pro 2.
Is there any KVM switch that can handle this (or to be more precise, is there any that HHKB can deal with, because obviously there's something wrong with HHKB, not with KVMs).
Do you have any experience with that?
Thanks.
HHKB Pro 2 has got USB hub and that seems to be causing trouble with most of the KVM switches.
KVM switches expect keyboard to be attached to its keyboard port. So when HHKB Pro 2 is attached, KVM switch finds an USB hub and just stops. It won't go beyond USB hub to look for keyboard which might be attached to it.
So are there any KVM switches that works fine with HHKB Pro 2?
One of the ATEN's KVM switch worked although it was a bit unstable.
May be their recent models might work with increased stability if you want to give it a try.
However, I would suggest free software solution like "Synergy" (http://synergy-foss.org/) if you have display for each of your computers.