IOS7 issue with USB DACs?

Ive been running my iPad3 to an Audiolabs MDAC USB DAC via the CCK on ios5 and then 6 for awhile and its been working fine.
When using FlacPlayer or iPeng apps or itunes Home Sharing and hi-res FLACs/ALACs I would get 24/96 playback with no issues.
Since iOS7, with those same apps, while the dac detects a 24/88 or 24/96 signal, and it plays it, there is a white noise/stutter every other second in the tracks, though all 16bit and even 24/44 and 24/48 material is fine.
Is anyone else experiencing this since update to ios7.
Disappointed as this is something that used to work.

If I may act as a "Devils Advocate"... taking what you report as an OS issue, if that were so, it would suggest that any books created since iOS7 was introduced and had a movie a intro...would be reporting the issue here weeks ago.
I have just opened and checked three of my books with video intro..and none have any problems. I used iPad 2,3 and mini to check, and all show and allow manual control of the video.
Assuming your video is in the acceptable format..
Have you tried with default book from the template chooser, to recreate this apparent problem?
When you dropped in your video, did the application pop up the reprocessing message?
My (albeit often flawed) assumption is that your problems may arise from the video itself in some way.
Another issue which seems to affect some and not others is... using Preview to test a book. Advice suggests exporting the book and adding to iTunes > add to library and sync.
I prefer to export and use Dropbox, which has an option to open in iBooks in the iPad.
Although it may not be relevant, all my books have portrait mode disabled.

Similar Messages

Connectivity Issues with USB 3 ports on macbook pro

Hi, I have a zoom r24 which is no longer working as an audio interface with my new macbook pro. I have read a lot about issues with USB 2 devices not being compatible with USB 3 ports on the macs. This seems to be midi as well as audio devices. Can anyone recommend or point me to a list of supported devices for both audio and midi which are guaranteed to work with a late 2013 macbook pro retina display. I cant afford a thunderbolt device. Thanks steve

Just a wild thought here, but have you tried inserting a powered USB 2.0 hub between the MacBook and the interface?

HP ENVY 6t has many issues with USB headphone, Bluetooth and more serious issue

HP ENVY 6t doesn't work with USB headphone, unfortunately. could u let me know how to fix it?
Bluetooth mouse has been working for a day, it suddenly stopped working. Having checked the PC bluetooth connection, which said "Working properly". Could you let me know how to re-connect, or re-work?
"Not complete shut-down" blue screen issue right after receiving the HP PC when I closed display to be in sleep mode.
I see the "Safe mode" "...." or "Normal mode" screen always.
The HP PC is not stable UNFORTUNATELY.
Even if just brand new HP PC, there seems to be many issues.

I would recommend using this document for your mouse: http://goo.gl/XDRRy
And using this document to troubleshoot your headphones issue: http://goo.gl/hV9fu
Most of the time with USB headphones, you have to download the driver from the manufacturer before they will work properly.
-------------How do I give Kudos? | How do I mark a post as Solved? --------------------------------------------------------

IPhone Issues with USB Connection and Bluetooth in GM cars

I recently purchased a 2009 Chevy Cobalt SS/TC and it has a USB connection for an iPod. Prior to the 2.1 updated the USB connection worked flawless as well did my handsfree/bluetooth. I had the Apple Genius Bar check my iPhone for any issues due to a corrupt update but everything turned up fine. When i connect to my car I receive an error message (iPod Did Not Authenticate. Check iPod Version). Also my bluetooth will sync but when you answer the phone using hands free you get no audio from the iPhone or speakers in the car. I used a friends iPod and everything worked fine but when I connect with a new iPod it displays the same error. I have contacted GM but they said talk to Apple.
If anyone can help please let me know.
Thanks

Hey J,
Well you got me thinking about your question, and I guess I didn't get it the first time. Again, I own the same car - 09 Chevy Cobalt SS/TC, Black. A lot of fun! I plugged my iPhone into the radio USB connection and get the same error. The GM radio does not support the iPhone. It will not authenticate. The GM radios' firmware is looking for an iPod, not an iPhone. That is expected. As far as the iPhone and it's Bluetooth, again the iPhone's Bluetooth hands free works fine, except I cannot answer the iPhone during an incoming call without first unlocking the iPhone then pressing the mute button on the steering wheel. For what it's worth the iPhone will charge through the USB connection. I'm a little confused on what you are trying to connect. Bottom line, an iPod should always work, an iPhone, not at all. Lastly, I have purchased the GM Personal Audio Link (PAL) and hope to use it with my iPod so I can put the iPod in the glove compartment. Although I have heard a lot of negative comments and issues with it for being slow and sluggish. If so, I'll be sending it back and I'll stay with the USB connection. I'll let you know how that works.

Z87-G65 power issue with usb(port reset failed)

All,
I'm having an issue with my motherboard and wanted to see if anyone had suggestions. In windows 8.1 if I have my webcam or external hard drive plugged in USB. I get this error the the USB device is not recognized and the port reset failed(code 43). I noticed when I turn on the PC and it's booting the light on the webcam and hard drive flash like it's not drawing enough power to stay on. The boot sticks at 9c on the screen and I have to reset. When windows boots they turn off. Since it's before windows boots I think this is either a MB issue or a power supply issue. I have a corsair 750 watt power supply so plenty of power. Any ideas?

Board: MSI Z87-G65
Bios: Version 1.9
VGA: MSI Gaming N780 TF 3GD5/OC GeForce GTX 780 3GB 384-bit GDDR5 PCI Express 3.0 SLI Support Video Card
PSU: CORSAIR HX Series HX750 750W ATX12V 2.3 / EPS12V 2.91 SLI Ready CrossFire Ready 80 PLUS GOLD Certified Modular Active PFC Power Supply New 4th Gen CPU Certified Haswell Ready
Intel Intel Core i7-4770K Haswell 3.5GHz LGA 1150 84W Desktop Processor Intel HD Graphics BX80646I74770K
MEM: CORSAIR Dominator Platinum 16GB (2 x 8GB) 240-Pin DDR3 SDRAM DDR3 1866 Desktop Memory Model CMD16GX3M2A1866C9
HDD: SAMSUNG 840 EVO MZ-7TE500BW 2.5" 500GB SATA III TLC Internal Solid State Drive (SSD)
COOLER: NZXT Kraken X60 RL-KRX60-01 Ultra Performance Water/Liquid CPU Cooler 280MM
OS: Windows 8.1 64bit Professional
CASE: NZXT H630 CA-H630F-W1
I am plugging them into the USB 2.0 ports on the back of the motherboard, but it doesn't seem to matter where I plug them in I get the same errors.

Thinkpad X1 Mouse Issues with USB 3.0 Dock and WIndows 8.1

I have a new X1 (3444-CUU) that I recently upgraded to Windows 8.1. When I connected to the Thinkpad USB 3.0 Dock, there was an automatic updated of the firmware on the docking station.
Everything seems to be working except issues with my Keyboard and Mouse.Periodically, the mouse will disappear of the keyboard will simply stop working. Most recently, it was as if the delete key was stuck causing it to delete all my email (actually a feature I liked but unfortunately, can't allow).
Is there a known issue with wireless keyboard?

I have a possibly similar issue that seems to be related to the keyboard dock. In my case this is with logitec unified receiver, but what I found may help you narrow the issue's root cause.
I found that after a reboot, the dock's USB ports (bothh SS or USB 3.0) will not recognize logitech's unified receiver. Even though it is Windows reporting it, it seems to be related to the hardware. What I do to have minimally invasive 'functioning' system is to undock the Helix (use as tablet). This makes the genuine USB 2.0 port of the tablet accessible. I then plug the receiver into that port and wait until the mouse is recognized. Then remove the receiver, re-dock the tablet on the keyboard dock and plug the receiver into the dock's usb 3.0 port. Then everything works.
That seems to somehow circumvent part of the refreshing of the USB connected devices and allows them to work correctly.
I wonder if that addresses your issue. Of course I am opening another thread and ticket with that issue (will post a link after that)

Issue with usb flash and removable hard drives in Lion. (also an install tip)

Having an issue with my usb flash and removable hard drives. I plug them in and Lion does not display all my files/folders, I take it out and plug it into my snow leopard machine and all the files/folders are there, does anyone have this issue?
It does it on my macbook pro which was a snow leopard upgrade to Lion and it does it on my macbook which was a clean install of Lion via a bootable flash drive.
The computers both work great in all other aspects, so there were no errors on installation. It's plain and simple, some files/folders are not showing up that are present on the drives and viewable on all other non-lion OS's mac and PC.
Also a word on installs, I highly suggest doing a clean install (delete and reformat drive them install Lion vs a snow leopard ugrade) my machine that was a clean install (macbook) runs 50% faster and smoother than the upgraded one (macbook pro).

Yes, you can use your backup disk drives in the manner you describe, but Apple provides conflicting information on the subject.
From Mac Basics: Time Machine
Time Machine can’t backup to an external drive that's connected to an AirPort Extreme, Time Capsule, or a drive formatted for Microsoft Windows ...
From Time Machine doesn't back up to AirPort Extreme AirPort Disks
Time Machine in Mac OS X v10.5 or later can be used to back up to many kinds of Mac OS Extended-formatted drives, but you cannot choose an AirPort Extreme 802.11n's AirPort Disk as a Time Machine backup volume.
However, you can choose Time Capsule AirPort Disks or internal disks as a Time Machine backup volume.
They have yet to resolve this discrepancy.
All other available technical details regarding Time Machine's use seem to indicate that a USB HD connected to Time Capsule should meet Time Machine's requirements. For what it's worth I have been using an external HDD connected to the Time Capsule's USB port and it seems to function just fine.

Does the Mac Mini have some issues with USB mics?

Hi there,
I've been having issues getting my Mac Mini to register my Logitech usb headset. I originally thought it was an issue with Mavericks, but when I tested the headset on my friends Macbook, it works fine. I tried using my iPhone headphones in the headphone slot, and it picks up my voice fine. The Logitech headset is suppose to be Osx friendly, but is there something I'm missing and does anyone know why my logitech headset is not working with my Mac Mini properly?

For some Logitech devices you need drivers, for others you don't. Call Logitech support to find out if that one has been tested with 10.9.

Strange issue with USB mouse and USB headset.

Good day everyone.
I was experiencing a rather strange issue with my mouse and headset(both USB).
I am using KDE and ALSA, if that matters.
They are working just fine, but sometimes, when I try to lower\raise volume, my mouse derps out. I can move it around, but I can't click on anything(sometimes though, I can click on stuff in window that was active before and sometimes only on KDE panel) until I re-plug my headset. Then, nothing can use my headset until I reboot.
Anybody ever had that problem?

I've had similar problems for some time now. Unfortunately, I don't know what the issue is either, but perhaps we can come up with some setup similarities and narrow it down. I have similar trouble with just alsa or with pulseaudio, so that's not it. It is unrelated to the DE, as it happened for me in both gnome 2 and xfce 4. It is not related to the machine either, as the same quirks occur in other machines with the same headset. I have had inconclusive results with downgrading to kernel26-lts, the ancient kernel. I thought at some point it messed up and I was sure the older kernel didnt help, but after trying recently-ish, I had no trouble for days -- until I found that I didn't have trouble on the main kernel either. ... then a few days later, it showed up again. Very irritating!
https://bbs.archlinux.org/viewtopic.php?id=122475
Does my old thread sound like your issue somewhat?
Essentially, at times, if the headset (wireless) is changed into a different power state (unplugged/plugged) or the mic state is toggled (mute/unmute), things that could be clicked on normally cant unless theyre in the window already focused -- mostly.
What headset are you using? 32 or 64 bit arch? Have you tried downgrading to kernel26-lts?

P45 Diamond issue with USB at boot.

Hi everyone.
It's Felipe from Chile again. I wait for everyone of you are doing fine. Maybe some of you would remember me about my last issue with my last motherboard https://forum-en.msi.com/index.php?topic=121186.0. The good thing is that problem is completely solved and the store changed my motherboard for an MSI P45 Diamond paying the difference in money.
I would be experience some little problems with this motherboard and I really would like you to help me.
I have an ASDL Modem USB Zyxel 630-C1, which I connect through Internet. My problem is, every time Windows starts up, I have to manually unplugged it and plug it again, for the O.S. to detect it. Either way, the System would not let me to connect to Internet.
I though the problem was because of the driver and Windows Vista, but I did a fresh copy of Windows XP Pro and I experience same problems. I asked my ISP for the last driver and he told me where to download them, but didn't fix the problem.
I think, it could be a problem of USB Leggacy Support but I tried to change it disabled-to-enabled and biceversa but I couldn-t make it work.
When my last motherboard MSI X48C I didn-t experienced this problem, but with this P45 Diamond the problem is present.
What I need is, the system detect my USB modem with no need to unplug it and plug it every time I boot on Windows.
Would you some of you, maybe recommend me something, please
I wait for your reply.
And thanks again.

Hello BOSSKILLER:
These are the answers for your questions:
Quote
Is it 32 or 64 bit Vista?
My Windows Vista Ultimate 32 bit English, Service Pack 1.
Quote
Do you use backside mainboard USB ports?
I tried with backside USB port, then frontal USB and then I tried at the USB from the 1394+USB Bracket.
Quote
Any USB power hubs in use?
I do not have any USB Hubs.
Quote
What BIOS is onboard?
My actual BIOS, is I said in the second post, v1.1 06162008. (I've never flashed and it comes with this version)
Quote
Do you use chipset drivers from Intel site?
I'm not quite sure about this question. The only thing I installed are:
Intel INF Drivers for P3x/P4x/G3x/G4x Chipsets (from http://global.msi.com.tw/index.php?func=downloaddetail&type=driver&maincat_no=1&prod_no=1478)
Creative Sound Blaster X-Fi Xtreme Audio (From the CD included)
(I also installed Realtek PCI-E Ethernet Drivers from the same MSI web page, but I'm not using them, so I disabled both from BIOS.)
About the chipset driver from Intel site, I entered http://downloadcenter.intel.com/Product_Filter.aspx?ProductID=816 then I selected Windows Vista* Ultimate, 32 bit version, pressed the Go button, from the Download Center I access Chipset, but there I'm not sure what should I select, can you tell me what shoud I download from there, or maybe that site is not he adequate.
Thanks again and I wait for your repply.

Compatibility issue with USB Hub?

I have a Toshiba Satellite A505 laptop. I added a Rocketfish 4 USB Hub and started having problems. Now when I put my laptop into SLEEP mode, about half the time when I try to wake it, it's unresponsive. I've tried all kinds of things, but the only way I can get the screen back on is to unplug the USB Hub. Thoughts?

There are FireWire printers, but these tend to be expensive specialized printers, like large format printers. Most consumer printers these days are USB.
There are FireWire flash drives
http://www.kanguru.com/fireflash.html
But they are expensive compared to USB flash drives. There are also FireWire memory card readers, but again, more expensive. In your case, if you really need a high-speed flash drive, you have to get a FireWire flash drive because your iMac USB 1.1 ports are so slow. You can even boot your Mac from it, if it's big enough to hold the OS. For people with USB 2.0, it's much cheaper and almost as fast as FireWire to get a USB flash drive.
I don't know of any FireWire input devices (keyboard, mouse, etc.).
USB hubs are pretty cheap, even the powered ones. This one from Belkin is only about $20 after the $10 rebate (and it has seven ports).
[Belkin Hub on Amazon|http://www.amazon.com/D-Link-DUB-H7-High-Speed-7-Port/dp/B00008VFAF/ref= sr12?ie=UTF8&s=electronics&qid=1217253076&sr=1-2]

Issues with USB connection to car stereo

I just got an iPhone a few weeks ago, and generally it's great, but I have frequent issues when connecting it to my new Pioneer DEH-P3100UB car stereo. I think it may be kind of new in that it doesn't have a "special cable" for connecting to the iPhone, it just uses the typical USB sync cable.
When I see the problem, the stereo reports error 19, which the manual calls a communication failure, and suggests turning the car off and back on, unplugging and replugging the USB device, or switching to a different audio source and then back to USB.
Generally, none of these suggestions work, but power cycling my iPhone always does. This doesn't seem like it should be necessary. Has anyone else had problems like this? Is this a problem with the iPhone software that might be addressed in a future software update?
Thanks!

Hey jrbapple,
Keeping your iPhone updated is a good idea. If you iPhone isn't already updated to iPhone software 2.2.1, try updating it now.
http://www.apple.com/iphone/softwareupdate/
Does the car stereo have the "Works With iPhone" logo?
You can find more information about the logo and Apple certified accessories here: http://support.apple.com/kb/HT1665
-Jason

Video issues with USB port replicator with Digital Video

I have a T400 running Windows XP SP3 32-bit, with the graphics mode set to use the ATI video card. I'm also using the latest approved Lenovo ATI driver for this machine.
I have two issues, one of which I consider major:
1) Sometimes when I plug in the replicator (got the latest drivers off of the Lenovo download site) everything works great, and other times the monitor never powers up. I plug the replicator into my laptop and the external keyboard and mouse work and the port replicator system tray icon appears, but the monitor is still in power-saving mode. If I try to activate the monitor by "extending" or "mirroring" it, it comes up with a pop-up that says:
"ThinkPad USB port rep. device: Error" - "Fail when adding device instance into driver!"
2) This is more of an annoyance, but I noticed when the monitor does work that black areas of the screen end up getting sparkly green lines through them. They aren't "actually there" in the sense that it's not corruption from the computer, they are simply artifacts of what seems to be some signalling problem.
Any help is greatly appreciated.

wim1234 wrote:
We (DispkayLink) have tested office 2013 and not found any BSODs so there must be something system specific.
Could you gather the system logs and post here so we can see what might be wrong? Details on how to do this are here:
http://kb.displaylink.com/269
Thanks
Wim
Your reply is 2 months later, I had to revert to Office 2010 and return the laptop to the end user.
But, I got another model of the same laptop right now which can be used to test it, I will let you know if it works out this time with the lates DisplayLink software for Windows.

[SOLVED] How to achieve the best sound quality with USB DAC?

I want to take full advantage of my hardware. However, I'm having trouble understanding what settings I need to configure. I've spent several hours reading through wikis and searching online. Ultimately, I'm trying to achieve the highest quality audio output in stereo that's possible with my setup. USB > Behringer UAC202 > RCA out > Audioengine A2
I've had this DAC working for a couple of weeks, but I noticed that MPD was still eating a lot of CPU cycles upsampling music from 44.1 to 48khz. As I looked into it, it seems that this is unavoidable with ALSA, so I need to use OSS. Is that true? There's some conflicting ideas about when it's necessary to use OSS. I'm not using any legacy applications or old hardware. The "Hardware mixing" section in the ALSA wiki is pretty sparse.
I want all sound to go through the DAC, so I disabled all of the sound options in the BIOS (HDAudio and HDMI audio). I shouldn't need those enabled, right? (What's strange is that ALSA no longer wants to load without them.) I've added the OSS daemon and it starts, but I still don't have any sound in KDE. It no longer offers the "USB Audio CODEC" option. I'm ok with no system sound for now, if I can get MPD working.
/etc/mpd.conf contains:
audio_output {
type "oss"
name "UCA202"
device "/dev/oss/usb08bb2902-1/pcm0"
format "44100:16:2" # optional
mixer_device "/dev/mixer"
MPD is still starting as the root user. (I know, I should change that)
The daemon starts, but trying to play any track results in the following error in /var/log/mpd/mpd.log:
May 21 10:46 : output: "UCA202" [oss] failed to play: Write error on /dev/oss/usb08bb2902-1/pcm0: Input/output error
So... any help would be appreciated. Maybe, first of all, do I need to use OSS or should I switch back to alsa? Or maybe something else like jack?
*******EDIT*******
ALSA was the correct choice. The simple solution was to create /etc/asound.conf containing:
pcm.!default{
type rate
slave{
pcm "plughw:0,0"
rate 44100
Then change the audio output settings in mpd.conf to:
audio_output {
type "alsa"
name "MPD ALSA"
device "hw:0,0"
mixer_control "PCM"
With these settings the DAC receives 44.1khz audio and no upmixing occurs. Only one application can make audio output at a time. MPD uses much less CPU.
Last edited by ioos (2012-05-24 23:34:51)

Pajaro wrote:
For good sound quality, flat response is the most important thing. Take a look at qloud, http://aur.archlinux.org/packages.php?ID=34412, and find yourself a very good microphone.
Then you will probably want to set a global equalizer for your machine. You can try with alsa, http://krustev.net/w/articles/Global_eq … _for_ALSA/.
If ALSA isn't finegrained enough, jack has a lot more flexibility, except for the fact that it doesn't allow you to set default output device, so you will need a helper application to redirect all output connections to your equalizer.
Well, i would say this is quite subjective. Untouched signal is superior to any equalized sound in my opinion, but i know this debate is never satisfying

IOS7 issues with getting unwanted contacts from another person who used to share an iCloud account with me....

I used to share an iCloud account with my sister (mainly for music/iTunes reasons). After downloading iOS7, I got all her contacts so I made my own iCloud account in order to separate our contacts, calendars, etc. Now her contacts are gone from my phone list but when I text, they still show up when I am selecting a recipient. How do I get rid them?

Settings > Photos & Camera > Photo Sharing > OFF

IOS7 issue with USB DACs?

Similar Messages

Maybe you are looking for