Ubuntu
linux package

  1. Bug #722377
  2. Comment #46

Comment 46 for bug 722377

Revision history for this message
=JeffH (jeff-hodges) wrote : Re: [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller. Switch display Fn button not working on Dell e6400

Hi folks,

This bug also a problem on the Dell E6500, and possibly the entire E6xxx series (as well as precision, Inspiron, and other more recent Dells). There are many questions about it in ubuntuforums.org if you search around, plus this Bug #722377 essentially is a duplicate of..

switching to external VGA monitor does not work anymore on dell precision M4400 and Ubuntu 10.04
Bug #585258
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/585258

I've recently posted this..

[ubuntu] 10.4 upgrade - Fn F8 (external monitor flip) not working (post #7)
http://ubuntuforums.org/showpost.php?p=11176214&postcount=7

..where I note that it appears that the scancodes that are issued by the Dell E6500 keyboard are now different than the ones that were issued by my Dell D820 (and on which fn+f8 external monitor switch works with 10.04.x).

Is the keyboard driver and its default keymaps bound into the kernel? If so that'd explain Lucio Crusca's (in Bug #585258) observations of the behavior being different with only booting different kernel revs.

For a workaround is it possible to dynamically load a new keymap that'd fix this problem?

Please, please, please, can we fix this -- I have to do the external monitor switch thing all the time and I really want to get my E6500 working properly. thanks!!!