Comment 37 for bug 1234818

On 10/21/2013 05:46 AM, Frank Lazzarini wrote:
> I just upgraded my Ubuntu installation from 13.04 (kernel
> 3.10.0-031000rc7-generic) with a USB Displaylink working just fine to
> 13.10 after loading the new kernel the usb displaylink stopped working.
> After reading this thread I tried 3.11.0-031100-generic as well which
> didn't work for me.
>
> Here a summary of my settings
>
> $ cat /etc/modprobe.d/blacklist-framebuffer | grep udl

You won an useless use of cat award :-).
http://partmaps.org/era/unix/award.html

> #blacklist udl
> blacklist udlfb

Same settings here.

>
> $ cat /etc/modprobe.d/udlfb.conf
> options udlfb fb_defio=1

This file doesn't exist on my system, but since udlfb is blacklisted, it
shouldn't matter.

Do you have a /dev/fbX device for the DisplayLink?

Does /var/log/Xorg.log.0 give any information about what goes wrong?

Best,
Nikolaus

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