This problem occurs with a USB modem device which contains a small iso9660 filesystem as well. I can confirm that it was working with Jaunty, but has not worked since.
Here's the relevant output from /var/log/messages: Oct 31 21:44:42 emigre kernel: [20503.892624] usb 1-1: new high speed USB device using ehci_hcd and address 4 Oct 31 21:44:42 emigre kernel: [20504.030058] usb 1-1: configuration #1 chosen from 1 choice Oct 31 21:44:42 emigre kernel: [20504.032692] scsi6 : SCSI emulation for USB Mass Storage devices Oct 31 21:44:47 emigre kernel: [20509.032708] scsi 6:0:0:0: CD-ROM Nokia Datacard CD-ROM 0001 PQ: 0 ANSI: 0 Oct 31 21:44:47 emigre kernel: [20509.037433] sr1: scsi3-mmc drive: 0x/0x caddy Oct 31 21:44:47 emigre kernel: [20509.037724] sr 6:0:0:0: Attached scsi generic sg3 type 5 Oct 31 21:47:32 emigre kernel: [20673.841873] usb 1-1: USB disconnect, address 4 Oct 31 21:47:41 emigre kernel: [20682.632033] usb 1-1: new high speed USB device using ehci_hcd and address 5 Oct 31 21:47:41 emigre kernel: [20682.765093] usb 1-1: configuration #1 chosen from 1 choice Oct 31 21:47:41 emigre kernel: [20682.770299] scsi7 : SCSI emulation for USB Mass Storage devices Oct 31 21:47:46 emigre kernel: [20687.777357] scsi 7:0:0:0: CD-ROM Nokia Datacard CD-ROM 0001 PQ: 0 ANSI: 0 Oct 31 21:47:46 emigre kernel: [20687.786196] sr1: scsi3-mmc drive: 0x/0x caddy Oct 31 21:47:46 emigre kernel: [20687.786646] sr 7:0:0:0: Attached scsi generic sg3 type 5 -- [Karmic] cdrom don't mount automatic https://bugs.launchpad.net/bugs/431142 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