kernel-packages team mailing list archive

[Nikolaus Rath <Nikolaus@xxxxxxxx>]

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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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1234818

Title:
  Regression: DisplayLink DL-195 fails with EAGAIN after upgrade from
  3.11.0-031100  to 3.11.0-11

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  My Plugable UGA-2K-A USB 2.0 to DVI adapter (using chipset DisplayLink
  DL-195, USB ID 17e9:4302) works fine with 3.11.0-031100-generic.
  However, when upgrading to 3.11.0-11-generic, X11 fails to open the
  DRI device with

  [     8.868] (EE) open /dev/dri/card1: Resource temporarily
  unavailable

  Reverting to  3.11.0-031100-generic fixes the problem. Upgrading to
  current mainline (3.12.0-999.201310030405) also fixes the problem (but
  causes lots of kernel BUG messages).

  In both cases, the kernel correctly creates the /dev/fb1 and
  /dev/dri/card1 devices. There are no error messages in the kernel log.

  I can bisect this if someone tells me where to find the intermediate
  versions.

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