New To Mac-Forums?

Welcome to our community! Join the discussion today by registering your FREE account. If you have any problems with the registration process, please contact us!

Get your questions answered by community gurus Advice and insight from world-class Apple enthusiasts Exclusive access to members-only contests, giveaways and deals

Join today!

 
Start a Discussion
 

Mac-Forums Brief

Subscribe to Mac-Forums Brief to receive special offers from Mac-Forums partners and sponsors

Join the conversation RSS
Apple Desktops Discussion of Apple's desktop machines including Mac Pro, iMac, Power Mac, and mini

iMac - Bizarre USB issue with Imac


Post Reply New Thread Subscribe

 
Thread Tools
micmac

 
Member Since: Jan 15, 2009
Posts: 2
micmac is on a distinguished road

micmac is offline
Hey, I just found this resource (mac forums) after having my imac for a year and I am quite glad to have found it!

Anyway, I am having some issues with my imac's usb port.
Firstly, I have a 2.66 core intel imac which is about a year old.
Here is the problem, if I plug a usb device, whether it be a ipod, usb device, mouse or Keyboard, after the computer has booted up then none of the devices are read. However, if I plug the devices in when the computer first boots up, then everything works fine. the Ipod works, the mouse works, etc.
So for example, if I were to boot up my computer with my ipod plugged into my usb port, my mac would recognize it. If I were then to unplug the ipod and re-plug it, the computer will not recognize it. Even in Disk Utility the computer will not recognize it. Furthermore, I have tried every USB port on my computer (3) and all of them have this problem.
Now there is one exception to this strangeness. If I plug in my camera through usb after the computer has been booted up it works fine and I am able to download the photos onto iphoto.
I know its not a Ipod issue as it does this with all three of my ipods and all my devices (except for that camera USB) and I can't think why the computer would be doing this. Maybe a bug?
I looked around on line to see if anyone else had this problem and it looks like I am the only one.
I wonder if I should take it back before my warranty is expired.

Any help would be greatly appreciated.
Glad to be part of the forum.
Micmac
QUOTE Thanks
hughvane

 
hughvane's Avatar
 
Member Since: May 18, 2008
Location: Banks Peninsula, New Zealand
Posts: 3,259
hughvane is just really nicehughvane is just really nicehughvane is just really nicehughvane is just really nicehughvane is just really nice
Mac Specs: MacMini 2.4, 4 Gb, OS 10.8 and 10.6; MacBook 2.4, 2 Gb, OS 10.5.8; G4 eMac 1.25, 2 Gb, OS 10.4.11

hughvane is offline
Quote:
Originally Posted by micmac View Post
If I were then to unplug the ipod and re-plug it, the computer will not recognize it.
Whoa, just a minute, are you ejecting the devices you've mentioned before trying to reactivate them, or simply pulling them out of the USB socket (in which case you should get a warning)? Under the MacOS, you must eject all USB devices (from Finder), wait about 15 secs (MacOS is soooo precious about letting go) and then remove the device.

I think the reason the camera behaves differently is that it is self-powered, not bus (USB) dependent.
QUOTE Thanks
chscag

 
chscag's Avatar
 
Member Since: Jan 23, 2008
Location: Fort Worth, Texas
Posts: 38,863
chscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond repute
Mac Specs: 27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, 3 iPods, OS X Mavericks

chscag is offline
Take it on in to Apple before your warranty expires. As long as you're properly inserting and ejecting the devices, the USB ports should pick them up regardless if the machine is first booted or not. As for the camera, hughvane is probably correct since it's very likely battery powered and does not depend on the USB port power.

Regards.
QUOTE Thanks
micmac

 
Member Since: Jan 15, 2009
Posts: 2
micmac is on a distinguished road

micmac is offline
Sorry, I totally eject the device before I pull out USB device. But when I plug it back in, lets say its my ipod, the ipod screen goes into the mode that it is plugged in and being recharged, but the computer doesn't recognize it.



Cheers!
Micmac
QUOTE Thanks
hughvane

 
hughvane's Avatar
 
Member Since: May 18, 2008
Location: Banks Peninsula, New Zealand
Posts: 3,259
hughvane is just really nicehughvane is just really nicehughvane is just really nicehughvane is just really nicehughvane is just really nice
Mac Specs: MacMini 2.4, 4 Gb, OS 10.8 and 10.6; MacBook 2.4, 2 Gb, OS 10.5.8; G4 eMac 1.25, 2 Gb, OS 10.4.11

hughvane is offline
Just one step before taking up chsag's suggestion, how long is it since you did any maintenance on the OS? In your situation I'd at least run OnyX to repair permissions and execute maintenance scripts. See what eventuates after that.
QUOTE Thanks

Post Reply New Thread Subscribe


« Shutting Down Daily | G4 CPU upgrade »
Thread Tools

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off
Forum Jump

Similar Threads
Thread
Thread Starter
Forum
Replies
Last Post
Random Sleep Mode / Overheating Issue (iMac G5) readjdm Apple Desktops 14 12-23-2010 10:41 AM
Adding memory to imac issue tremora Apple Desktops 2 05-03-2008 01:32 AM
iMac and USB Wireless Mouses evanb Other Hardware and Peripherals 3 10-28-2007 09:51 PM
Imac 20 + LCD TV or Imac 24 + usb TV el_lasso Switcher Hangout 5 03-12-2007 04:28 PM
iMac G5: Sound issue!! Mainyehc Apple Desktops 6 11-08-2004 04:27 AM

All times are GMT -4. The time now is 02:50 PM.

Powered by vBulletin
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
X

Welcome to Mac-Forums.com

Create your username to jump into the discussion!

New members like you have made this community the ultimate source for your Mac since 2003!


(4 digit year)

Already a member?