I have a feeling there are two different bugs here. All these filesystem comments, and "echo 64 > /sys/block/sdh/queue/max_sectors_kb" make no sense to me, as often the device (/dev/sdh or whatever) has not even come up.
I tried formatting my USB stick as ext2 - but it makes no difference. As mentioned earlier, *my* bug is a boot-time interaction between ehci_hcd and my Alcor Micro Corp card reader - I think the only USB 1.X peripheral. I have tried a PCI addin card with two USB ports - ( ALi Corporation USB 1.1 Controller // ALi Corporation USB 2.0 Controller ) - an old piece of hardware that works fine elsewhere - drives don't work there either if the Alcor card-reader is plugged in. It could be an interaction between the Alcor and the Intel Corporation 82801G (ICH7 Family) USB UHCI Controller - it has a 9 pin header that I can't plug into the Ali Corp card. My solution is simply to unplug the Card reader - if I need it I can plug it in after boot. Everything works fine then. I have tried loading the USB modules in a different order - it makes no difference. -- ehci_hcd module causes I/O errors in USB 2.0 devices https://bugs.launchpad.net/bugs/88746 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
