I'm having this very same problem, on two computers with nearly identical hardware: Same brand and type of motherboard, same (AMD64) CPU, same types and capacities of harddisks, same brand and type of DVD drive.
They both have three USB hubs connected to them: - A four-port external STLab USB 2.0 hub, connected to a USB plug at the back of the computer; - A front-panel Sitecom FW-006 Combo hub, with four USB 2.0 ports and two Firewire ports, connected to the motherboard headers; - A front-panel Silverstone Combo hub, with four USB ports, one Firewire port, and audio, also connected to the motherboard headers. (Cfr. attachment "lshw.txt" which is the output from the "sudo lshw" command.) When I boot up the Ubuntu 8.04 Live CD, USB works fine: Any device that I connect, will get registered and auto-mounted, as expected. However, when I'm running Ubuntu 8.04 from harddisk, USB devices will NOT get registered (there won't even be any messages in "dmesg"), until I run the "lsusb" command--that will cause the devices to get registered and auto-mounted, and messages to that effect will appear in the "dmesg" log. From then on, any further USB devices that I connect, will function normally, ... until I disconnect all USB devices again. At that point, I need to reissue the "lsusb" command after I connect another USB device. There's one exception: A USB device that I connect to the Silverstone hub, WILL get registered and auto-mounted without further ado. This one hub, thus, is properly handled. Under Ubuntu 8.10 (Intrepid Ibex--installed and fully updated), I cannot reproduce the issue, so it seems to be gone with the newer kernel releases. However, there are other problems in Intrepid Ibex (playing media files in the movie player, or in vlc, or in any other media player that I tried, suffers from bad, insupportable flickering), which, until resolved, keep me from upgrading. ** Attachment added: "lshw.txt" http://launchpadlibrarian.net/19943716/lshw.txt -- ubuntu doesn't recognise usb drives https://bugs.launchpad.net/bugs/254589 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
