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USB Not Working in El Capitan

JLatte said:
I'm having this same problem as well, except for me it's just when I dock and undock the machine with the 3 in 1 adapter. Doesn't happen all the time, but maybe every other day, then I have to reset the machine or it stops registering my Apple usb keyboard through the usb-c adapter.
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I have DP6 and a 2015 rMB. Exactly the same experience. I need to reboot to get the USB port to recognize devices. With the 3-in-1 adapter, VGA keeps working, though. Only USB port is affected.
 
Still the same issue with DP 7.

I keep losing sound on USB devices that are connected via a Thunderbolt to USB hub.

Locally connected USB devices seem to be largely working.
 
I'm also having problems with a receiver plugged directly into my USB ports on my 2015 MacBook Pro. The software is TurningPoint 5.0. It no longer recognizes my receiver. I've tried two different receivers on both USB ports. No success. Both worked flawlessly under Yosemite. Any suggestions?
 
I can't relate. The only thing I have is my Apple Bluetooth keyboard and Magic Mouse disconnects after not using it for a while. It's annoying as hell but I think this is by design. I've looked everywhere and can't seem to disable this 'feature.'

If there's anything I'd like Apple to add in El Cap is the "Keep-alive" setting for these devices in Power settings maybe.
 
I've seen an issue with a USB hard drive, connected through a hub. Drive spins down, won't spin back up until after a reboot.

Running the GM candidate.
 
I'm having this problem without a hub for my keyboard, a USB Ducky Zero keyboard on a Mid-2011 Mac Mini. The fun part is I use whole disk encryption, which means I have to enter a password to unlock the disk at boot time. The keyboard works for that part, and goes dark the second the disk is unlocked and the OS starts loading (I can tell because caps lock no longer lights up at that point). I just upgraded from Yosemite production release to El Capitan production release. Any thoughts would be welcome, as my computer is DOA without its keyboard.

(And to squash any "then-how-are-you-typing-this" jokes, I'm typing this on my 2010 MBP's internal keyboard!)
 
halexists said:
I'm having this problem without a hub for my keyboard, a USB Ducky Zero keyboard on a Mid-2011 Mac Mini. The fun part is I use whole disk encryption, which means I have to enter a password to unlock the disk at boot time. The keyboard works for that part, and goes dark the second the disk is unlocked and the OS starts loading (I can tell because caps lock no longer lights up at that point). I just upgraded from Yosemite production release to El Capitan production release. Any thoughts would be welcome, as my computer is DOA without its keyboard.
Click to expand...

After upgrading I had two of three of my external USB hard drives randomly disconnect. One is plugged straight into the iMac. It also has a separate power supply. The other is connected via a Thunderbolt dock and is supplied just through USB. The dock itself has a power supply.

I reset the SMC yesterday. I'm not sure if it worked. We lost power last night. I have a UPS but the drives aren't all on it. But you could always try reseting. There is no harm in trying that.
 
Thanks for the tip, I did try the SMC reset a few times and it doesn't change anything. The keyboard blinks out as soon as the disk is unlocked via password.
 
Had the problem tonight with a USB port on a Thunderbolt dock. Would not recognize my iPhone.
 
jeffg819 said:
Had the problem tonight with a USB port on a Thunderbolt dock. Would not recognize my iPhone.
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Having the same problem with my 5k iMac.

Before I slept I was on Yosemite and all my externals were fine. Next day the drives will load then be disconnected. Apple fix this soon!

I thought beta testing was done for this???

Oh well. Early adopters beware.
 
Hello Guys!! I recently updated from yosamite to elcapitan. I'm using USB to Ethernet on my MBP. Now my Mac is not detecting my USB to Ethernet port. I m forced to use Wifi!! Any solutions Please???? Thanks in advance.
 
My anker usb hub is causing my iMac to hang on the all white splash screen on start up.
 
h9826790 said:
Similar issue, I have an external HDD and card reader which connected via a powered USB 3 hub. The HDD shows under system information, but never mount. Of course, there is nothing in the new disk utility as well. Just can't use it.

Everything works flawlessly when boot into Yosemite.
Click to expand...
Similar issue (HDD connected via an ExpressCard USB3 card which worked happily under Yosemite after a few tweaks of kernel drivers). I was even surprised to find the HDD under system information. Anyway it's useless as it's not mounted under /Volumes.
 
USB 3 appears to be sensitive to cable placement.
If you've got a rats nest back there, it might very well cause dropouts.
Make it neat, with the various cable types well separated.
 
TonyC28 said:
USB on my iMac has stopped providing power when the computer is sleeping. I used this all the time to charge my FitBit and it has stopped working with El Capitan.
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I'm having this same issue...
 
TonyC28 said:
USB on my iMac has stopped providing power when the computer is sleeping. I used this all the time to charge my FitBit and it has stopped working with El Capitan.
Click to expand...

Same problem here. Loading the iPhone over night is impossible. But - the USB-Ports on the back of the iMac are still working while sleeping. Only the devices connected to a hub are disconnected. I use two hubs, one with separate power-supply. The keyboard is also plugged to this hub - and works fine. I'm going crazy....

Bye, Peter
 
I got it to charge last night by going to the Energy Saver control panel and selecting the button "Prevent computer from sleeping automatically when display is off" and leaving the laptop open. If I closed the laptop cover, then charging was immediately disabled, but leaving it on worked, and I was able to charge my devices.
 
TonyC28 said:
USB on my iMac has stopped providing power when the computer is sleeping. I used this all the time to charge my FitBit and it has stopped working with El Capitan.
Click to expand...

In addition to my USB drives disconnecting I've now had the no power via USB. I plugged my iPhone in while my iMac was asleep. It wouldn't charge. Even after I fully woke up the iMac it still did not charge. It did charge after I disconnected and reconnected the cable. The cable is plugged directly into the iMac.

I rebooted and let the iMac go to sleep. The next time I tried charging while asleep it actually did charge. So for me the problem is not constant.
 
I have issues with USB Hard drive Docks. Mounting drives via USB causes finder/the mac to hang (most of the time) — when and if the drives connect, they are slow. This all worked fine in Yosemite.

Taking the same bare drives and connecting them into a Thunderbolt bay in JBOD, they mount just fine.
Seems there are still 10.11x issues with USB.

Also, my USB DAC cuts to static randomly or requires on / off cycles after booting the Mac.
A lot of bugs in El Capitan…
 
halexists said:
I'm having this problem without a hub for my keyboard, a USB Ducky Zero keyboard on a Mid-2011 Mac Mini. The fun part is I use whole disk encryption, which means I have to enter a password to unlock the disk at boot time. The keyboard works for that part, and goes dark the second the disk is unlocked and the OS starts loading (I can tell because caps lock no longer lights up at that point). I just upgraded from Yosemite production release to El Capitan production release. Any thoughts would be welcome, as my computer is DOA without its keyboard.

(And to squash any "then-how-are-you-typing-this" jokes, I'm typing this on my 2010 MBP's internal keyboard!)
Click to expand...

I have the same problem with my Ducky USB keyboard. I contacted Apple and they said to reach out to Ducky. I have a couple of machines running El Capitan that have the same behavior. The keyboard works fine on my Yosemite machine. In El Capitan, the kernel messages show an error when I plug the keyboard in. On Yosemite, the device shows up as "XHCI Root Hub USB 2.0 Simulation". The El Capitan beta release notes mention they did some work on the USB stack. I haven't contacted Ducky yet, but will update when I do.
Code: 
085793.140925 AppleUSBHostCompositeDevice@: AppleUSBHostCompositeDevice::ConfigureDevice: unable to set a configuration (0xe0005000)
085793.837454 K108D@14200000: AppleUSBDevice::waitForInterfacesGated: timeout waiting for _interfacesMatched
 
serrano10 said:
I have the same problem with my Ducky USB keyboard. I contacted Apple and they said to reach out to Ducky. I have a couple of machines running El Capitan that have the same behavior. The keyboard works fine on my Yosemite machine. In El Capitan, the kernel messages show an error when I plug the keyboard in. On Yosemite, the device shows up as "XHCI Root Hub USB 2.0 Simulation". The El Capitan beta release notes mention they did some work on the USB stack. I haven't contacted Ducky yet, but will update when I do.
Code: 
085793.140925 AppleUSBHostCompositeDevice@: AppleUSBHostCompositeDevice::ConfigureDevice: unable to set a configuration (0xe0005000)
085793.837454 K108D@14200000: AppleUSBDevice::waitForInterfacesGated: timeout waiting for _interfacesMatched
Click to expand...

I found a fix here:
http://apple.stackexchange.com/ques...g-after-upgrading-to-el-capitan/209174#209174

You can contact Ducky for new firmware directly, or get the copy that the one of the posters uploaded to Dropbox.
 
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