Thanks for reporting this issue. As said in this bug report, you need to use "localhost (QEMU)" in virt- manager and not "localhost (QEMU Usermode)" in order to connect to qemu:///system.
Can you still reproduce this issue with a recent virt-manager, such as the one in Karmic or Lucid? ** Changed in: virt-manager (Ubuntu) Status: New => Incomplete -- Error starting domain: virDomainCreate() failed Failed to add tap interface 'vnet%d' to bridge 'br0' : Permission denied https://bugs.launchpad.net/bugs/247677 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs