[Libdlo] module loads and unloads

[john]

This looks like some usb control transfers are failing.

Have you made any changes to the udlfb ?
Try the following
modprobe -r udlfb
depmod -a
uplug, replug

dmesg again.

you could also look at lsusb to see if you displaylink device
enumerate properly.

On Thu, Jun 11, 2009 at 10:32 PM, Alan
Bell<alan.bell at theopenlearningcentre.com> wrote:
> interesting. I get this:
> [18700.224843] usb 1-4.7: USB disconnect, address 8
> [18703.516131] usb 1-4.7: new high speed USB device using ehci_hcd and
> address 10
> [18718.592249] usb 1-4.7: device descriptor read/64, error -110
> [18724.340358] hub 1-4:1.0: unable to enumerate USB device on port 7
> [18739.852240] usb 1-4.7: new high speed USB device using ehci_hcd and
> address 11
> [18754.924186] usb 1-4.7: device descriptor read/64, error -110
> [18770.104276] usb 1-4.7: device descriptor read/64, error -110
> [18770.276670] usb 1-4.7: new high speed USB device using ehci_hcd and
> address 12
> [18785.368229] usb 1-4.7: device descriptor read/64, error -110
> [18800.556222] usb 1-4.7: device descriptor read/64, error -110
> [18800.736846] usb 1-4.7: new high speed USB device using ehci_hcd and
> address 13
> [18805.756201] usb 1-4.7: device descriptor read/8, error -110
> [18810.876364] usb 1-4.7: device descriptor read/8, error -110
> [18811.052273] usb 1-4.7: new high speed USB device using ehci_hcd and
> address 14
> [18816.072134] usb 1-4.7: device descriptor read/8, error -110
> [18821.192162] usb 1-4.7: device descriptor read/8, error -110
> [18821.296815] hub 1-4:1.0: unable to enumerate USB device on port 7
>
> however earlier in dmesg I get this:
>
> [    9.774475] DisplayLink device attached
> [    9.774648] ret control msg 0: 4 0500fffffff0
> [    9.827211] agpgart-intel 0000:00:00.0: Intel 945G Chipset
> [    9.827771] agpgart-intel 0000:00:00.0: detected 7932K stolen memory
> [    9.830759] agpgart-intel 0000:00:00.0: AGP aperture is 256M @ 0x40000000
> [    9.861395] input: PC Speaker as /devices/platform/pcspkr/input/input3
> [    9.868482] EDID XRES 2048 YRES 1152
> [    9.868489] INIT VIDEO 0 800 480
> [    9.868493] INIT VIDEO 1 1024 768
> [    9.868497] INIT VIDEO 2 1280 1024
> [    9.868500] INIT VIDEO 3 1400 1050
> [    9.868521] udlfb: probe of 1-4.7:1.0 failed with error -12
> [    9.868575] usbcore: registered new interface driver udlfb
>
>
>
> john wrote:
>>
>> Unplug your displaylink. Type "dmesg -c" in your shell. Re-plug it,
>> wait a few seconds and type "dmsg" in you shell; Can you paste the
>> result.
>>
>>
>> On Thu, Jun 11, 2009 at 10:21 PM, Alan
>> Bell<alan.bell at theopenlearningcentre.com> wrote:
>>
>>>
>>> OK, the kernel module is in the right place and gets loaded, the xorg
>>> module is in /usr/lib/xorg/modules/drivers/displaylink_drv.so and gets
>>> loaded, but then it unloads again
>>>
>>> (II) UnloadModule: "displaylink"
>>> (II) Unloading /usr/lib/xorg/modules/drivers//displaylink_drv.so
>>> (II) UnloadModule: "fbdevhw"
>>> (II) Unloading /usr/lib/xorg/modules/linux//libfbdevhw.so
>>>
>>> here is my /var/log/Xorg.0.log
>>>
>>> http://pastebin.com/f280e838f
>>>
>>> I suspect the issue is to do with the error on line 138
>>> (EE) open /dev/fb0: No such file or directory
>>>
>>> but I am not sure what to do about it. Any clues?
>>>
>>
>>
>>
>
>



-- 
John Boudouin