Dell's Inspiron n5110 touchpad activity led + Fn+F1 (display switch shortcut) not working on 12.04 precise

[Rafael C. Brandão]

These are 3 bugs that are occurring on my Dell Inspiron n5110 notebook which I believe are related to each other somehow.

Just to make it clear I'm currently running Ubuntu 12.04 from an USB live session.

1st) I can't switch monitor output mode using default shortcut keys Fn+F1. Switching them through Displays option available on System Settings work as expected though.

2nd) Shortcut keys for enabling and disabling touchpad (Fn+F3) are actually working but there's this little led light on my notebook that indicates when touchpad is disabled. It works on Windows 7 when I hit those keys they will turn on the little orange led light upon disabling the touchpad, however I have not yet tested this behavior on another linux distro, or any other Windows version for that matter.

3rd) HDMI will always mess up with LightDM display resolution when I boot Ubuntu with HDMI cable connected. Resolution is fine when I boot Ubuntu without HDMI cable connected. However when HDMI cable is connected to the port LightDM will output a "squared" resolution which is no good neither on laptop's main display nor on my widescreen TV. Actually Ubuntu just outputs a mirrored setup for both monitors.

Thank you in advance.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity 5.10.0-0ubuntu6
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
Uname: Linux 3.2.0-23-generic x86_64
ApportVersion: 2.0.1-0ubuntu5
Architecture: amd64
CasperVersion: 1.315
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
Date: Wed May 9 18:58:03 2012
LiveMediaBuild: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Daniel van Vugt (vanvugt)]

Dell's Fn+F1 key combination is actually implemented by sending Super+P....

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 950160, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.