@Motin: What the model number of your modem? Are you still having this problem in Ubuntu 12.04?
** Summary changed: - Contact is lost with internal HSDPA/UMTS modem after some random period - a suspend and wake cycle or a restart is needed to be able to use the modem again + Contact is lost with internal modem after some random period - a suspend and wake cycle or a restart fixes it -- Wireless 5520 Voda I Mobile Broadband (3G HSDPA) Minicard EAP-SIM Port ** Changed in: network-manager (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/367856 Title: Contact is lost with internal modem after some random period - a suspend and wake cycle or a restart fixes it -- Wireless 5520 Voda I Mobile Broadband (3G HSDPA) Minicard EAP-SIM Port To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/367856/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs