Can I sync with my iOS4 device such as iPhone 4 and iPad?
Open up the Synaptic Package Manager
Go to the Repositories (Under Settings)
Add this source - ppa:pmcenery/ppa
Click Close and then click the 'Reload' button at the top left of the Synaptic Package Manager
After it's finished reloading search for - libimobiledevice1
You will see two package in the list, install both of them
Now click the 'mark all upgrades' button and click 'mark' when the popup appears then click the 'Apply' button of the Synaptic Package Manager.
The software packages will then be downloaded and installed.
Restart your computer and login back in.
The 1st time you connect you ipod/iphone/ipad with rhythmbox open it will unmount. Just close rhythmbox then disconnect and reconnect you ipod/iphone. You should now see your ipod/iphone/ipad listed under Devices in rhythmbox.
Notes - Always best not to have rhythmbox open before you connect your ipod/iphone/ipad Rhythmbox is only supported, rhythmbox may say the songs are transferred but the 'Sync in Progress' is usually shown on the ipod/iphone/ipad after so just wait till you no longer see this displayed.
For a more detailed how to, see hee - http://forums.linuxmint.com/viewtopic.php?f=42&t=53489
Lucid natively supports both iPhone and iPod Touch 1G, 2G, 3G and 3GS models (iPad should also work) running up to firmware 4.0 without the need to jailbreak.
If you want to use you iPhone for USB tethering check out this blog post.
More information can be found at https://help.ubuntu.com/community/PortableDevices/iPhone.
I have actually had success in syncing my iPhone 4 (iOS 4.2.8), with Rhythmbox on Ubuntu 11.04. I still however, cannot get Banshee to work (and that is by far my favorite player, it feels MUCH more polished). Read the all the steps before you begin, some steps are more than one procedure and require information to complete. Here is what I did:
Installed all the libraries/applications indicated above (libmobiledevice, iFuse etc).
Then, as you are Jailbroken, Download iFile (easy) or SSH to your iphone (pain) and locate and edit /System/Library/Lockdown/Checkpoint.xml. Find the DBVersion key, and change its value from 5 to 4. Save and reboot your iPhone.
Then, you can use this page (http://ihash.marcansoft.com/) to generate a HashInfo file for your device and manually copy it to your phone. There will be instructions on that link above, that tell you where the hashinfo file goes after you create it. Note* You will need to have your UIDID.
It is a PAIN to get the UIDID from your phone unless you have iTunes, obviously we are using Linux (no iTunes), BUT there is a simple command to find it on your Linux machine: in the terminal with your iPhone connected, type:
lsusb -v
It prints a TON of text that seems to repeat, but keep scrolling down until you see "iSerial: (40 letters and numbers in random sequence)" Copy that serial/uidid info into the website hashgenerator above, and copy it to itunes_control/Device as per the sites' instructions. After all is done above, open Rythmbox, and you're set!
If it still does not work, I can try to clarify the steps further. It was a ROYAL PAIN for me to hunt these down until it worked, but it works flawlessly in Rhythmbox. (Banshee would be better.... but beggars cant be choosers! :)