Slightly off-topic, but maybe worth mentioning: I've noticed that if you've got a Feisty kernel (2.6.20-16-generic) and you add the line
options usbcore autosuspend=0 to /etc/modprobe.d/usb-core-options, as was suggested on comment #318 (https://bugs.launchpad.net/ubuntu/+source/sane- backends/+bug/85488/comments/318) not only will it have no effect -as the autosuspend option was only added in later kernel versions-, but also will stop your USB sticks from mounting. So, if you are experiencing this side effect on Feisty, simply remove the above mentioned line from /etc/modprobe.d/usb-core-options, then run 'sudo update-initramfs -u' and reboot. The effect of having that option enabled on my Feisty system was, as mentioned, that my USB stick would not automount (or be recognised at all), and the output of 'dmesg | grep usb' showing the following: Sep 7 15:48:20 microstar kernel: [ 45.077629] usbcore: Unknown parameter `autosuspend' Sep 7 15:48:20 microstar kernel: [ 45.079045] uhci_hcd: Unknown symbol usb_hcd_pci_suspend Sep 7 15:48:20 microstar kernel: [ 45.079180] uhci_hcd: Unknown symbol usb_hcd_resume_root_hub Sep 7 15:48:20 microstar kernel: [ 45.079262] uhci_hcd: Unknown symbol usb_hcd_pci_probe Sep 7 15:48:20 microstar kernel: [ 45.079426] uhci_hcd: Unknown symbol usb_check_bandwidth Sep 7 15:48:20 microstar kernel: [ 45.079574] uhci_hcd: Unknown symbol usb_disabled Sep 7 15:48:20 microstar kernel: [ 45.079661] uhci_hcd: Unknown symbol usb_release_bandwidth Sep 7 15:48:20 microstar kernel: [ 45.079980] uhci_hcd: Unknown symbol usb_claim_bandwidth Sep 7 15:48:20 microstar kernel: [ 45.080183] uhci_hcd: Unknown symbol usb_hcd_pci_resume Sep 7 15:48:20 microstar kernel: [ 45.080372] uhci_hcd: Unknown symbol usb_hcd_giveback_urb Sep 7 15:48:20 microstar kernel: [ 45.080464] uhci_hcd: Unknown symbol usb_hcd_poll_rh_status Sep 7 15:48:20 microstar kernel: [ 45.080628] uhci_hcd: Unknown symbol usb_hcd_pci_remove Sep 7 15:48:20 microstar kernel: [ 45.080723] uhci_hcd: Unknown symbol usb_root_hub_lost_power -- some usb_devices fault if usb_suspend enabled https://bugs.launchpad.net/bugs/85488 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
