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    SubjectRe: USB optical mouse on laptop causes bk12 boot to hang
    On Mon, 7 Apr 2003, Greg KH wrote:

    > On Mon, Apr 07, 2003 at 09:23:19AM -0400, Robert P. J. Day wrote:
    > >
    > > on to the next issue. the setup:
    > > dell inspiron 8100 laptop
    > > RH 9
    > > 2.5.66-bk12
    > >
    > > for ergonomic reasons, rather than use the laptop keyboard and
    > > touchpad, i have (under the previous RH 8 and 2.4.20) been using
    > > an external PS/2 keyboard and logitech USB optical mouse. this
    > > setup has been working fine -- when both external input devices
    > > are connected, i can use either keyboard, and just the optical
    > > USB mouse.
    > >
    > > booting under 2.5.66-bk12, if just the keyboard is connected,
    > > no problem. the boot works, both keyboards are active, and the
    > > touchpad works.
    > >
    > > however, if i connect *only* the optical mouse, the boot gets
    > > to "Freeing unused kernel memory", hangs for about a minute,
    > > then powers down the box. not good. (same thing happens if
    > > both external keyboard and mouse are connected, so i've isolated
    > > it to just the optical mouse).
    > What happens when you plug in the mouse, after the boot process has
    > completed?

    ok, here's the result of testing all this with 2.5.67-bk2. i built
    a new kernel and modules, rebooted and:

    1) with USB optical mouse and PS/2 keyboard:
    system hangs after "Freeing unused kernel memory"

    2) with USB optical mouse only:
    same problem as 1)

    3) with PS/2 keyboard only:
    boots fine, both keyboards work, and onboard touchpad works

    so having the mouse plugged into the USB port seems to be the issue.

    and checking further, i find that i've apparently no USB support
    loaded whatsoever. i plugged in the mouse, and got no reaction
    (i was tailing /var/log/messages at the time). plugged in a
    USB zip drive, still no reaction at all.

    /var/log/dmesg shows nothing related to USB recognition.
    and another oddity is that, as the system was booting, i got
    a complaint that it couldn't mount the FAT partition as the
    kernel had no vfat support.

    but i have vfat support as a module, however, "lsmod" shows
    a really skimpy set of loaded modules. it looks like autoloading
    of modules just isn't happening. i don't even have a module for
    the USB bus, which explains a lot.

    i have full module support selected in kernel configuration,
    but it seems that the required modules just aren't being loaded
    on demand.

    i just tested and "modprobe" seems to work, but i don't
    understand why none of this stuff is being loaded at boot

    i'm still running under the new kernel, so i'm willing to
    entertain things i can check, but i have no X session (nvidia,
    which i haven't even *tried* to set up under 2.5.67).

    any hints?


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