This problem has not been solved yet it appears. I can confirm it is not working on a Dell Latitude E5440 with Ubuntu 12.04 LTS, kernel 3.11.0-24-generic. The FN-F8 key is still not working correctly. I get similar key scan codes as JeffH posted:
I pressed FN-F8 twice here, and then FN-Arrow up (brightness) # acpi_listen -c 1 ^[p ^[p ^@video LCD 00000086 00000000 Here I pressed FN-Arrow up (brightness) first and then FN-F8 # showkey kb mode was UNICODE [ if you are trying this under X, it might not work since the X server is also reading /dev/console ] press any key (program terminates 10s after last keypress)... keycode 28 release keycode 225 press keycode 225 release keycode 125 press keycode 25 press keycode 25 release keycode 125 release -- 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/722377 Title: [Dell Latitude E6400] Switch display Fn+F8 not working Status in “linux” package in Ubuntu: Confirmed Bug description: The Dell E6400 has a hardware button Fn+F8 that, on windows, switches between the internal and the externally connected HP f2105 monitor. What did i expect to happen is when pressing the button, like windows the display would switch to the external monitor. What happened instead is that when pressing this button in ubuntu nothing happens. --- AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23. Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog] Subdevices: 2/2 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: work 1726 F.... pulseaudio /dev/snd/pcmC0D0p: work 1726 F...m pulseaudio CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xf6adc000 irq 47' Mixer name : 'Intel Cantiga HDMI' Components : 'HDA:111d76b2,10280233,00100302 HDA:80862802,80860101,00100000' Controls : 24 Simple ctrls : 15 DistroRelease: Ubuntu 10.10 HibernationDevice: RESUME=UUID=c44d4678-3197-4d15-bcc8-b1404aa9eca6 InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Beta amd64 (20100901.1) MachineType: Dell Inc. Latitude E6400 Package: linux (not installed) PccardctlIdent: Socket 0: no product info available PccardctlStatus: Socket 0: no card ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.35-28-generic root=UUID=011a04a8-aa8b-48dc-aa89-d52c7a32af85 ro quiet splash ProcEnviron: LANGUAGE=en_US:en LANG=en_US.UTF-8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 2.6.35-28.50-generic 2.6.35.11 Regression: No RelatedPackageVersions: linux-firmware 1.38.6 Reproducible: Yes Tags: maverick kernel-uncat needs-upstream-testing Uname: Linux 2.6.35-28-generic x86_64 UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare dmi.bios.date: 02/16/2011 dmi.bios.vendor: Dell Inc. dmi.bios.version: A28 dmi.board.name: 0W620R dmi.board.vendor: Dell Inc. dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA28:bd02/16/2011:svnDellInc.:pnLatitudeE6400:pvr:rvnDellInc.:rn0W620R:rvr:cvnDellInc.:ct8:cvr: dmi.product.name: Latitude E6400 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/722377/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
