Public bug reported:

Binary package hint: udev

When I press Fn+F4, my laptop does not go to sleep as it supposed to.
Through the menu, it goes to sleep well.

showkey (ctrl+alt+F1 session) prints the following after I press Fn+F4:

keycode 142 pressed
keycode 142 released

/lib/udev/findkeyboards gives

AT keyboard input/event5

sudo /lib/udev/keymap -i input/event5 gives after I press Fn+F4

scan code: 0xDF   key code: sleep

cat /sys/class/dmi/id/sys_vendor gives

Acer

cat /sys/class/dmi/id/product_name gives

Aspire one

The output of sudo /lib/udev/keymap input/event5 is attached as keymap.txt.
I tried to fix this problem mys
elf - adding the following after LABEL="keyboard_vendorcheck" in 
/lib/udev/rules.d/95-keymap.rules:

RUN+="keymap $name 0xDF sleep"

After that, sudo /lib/udev/keymap input/event5 do show "0xDF sleep"
binding, but when I press Fn+F4, nothing happens.

When I execute acpi_listen and press Fn+F4, nothing happens. Besides,
/etc/acpi/sleepbtn.sh is not called for sure - echo "hello" >
/home/markhor/test.txt placed at the start does not work.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: udev 151-12
ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic i686
Architecture: i386
CustomUdevRuleFiles: 20-crystalhd.rules
Date: Fri May 14 23:11:55 2010
InstallationMedia: Xubuntu 10.04 "Lucid Lynx" - Beta i386 (20100318)
MachineType: Acer Aspire one
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-22-generic 
root=UUID=cfe64a9f-b0e1-4a51-88e8-1253d2a5381d ro quiet splash quiet splash 
nomodeset video=uvesafb:mode_option=1024x600-24,mtrr=3,scroll=ywrap
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: udev
dmi.bios.date: 03/01/2010
dmi.bios.vendor: Acer
dmi.bios.version: V1.27
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Aspire one
dmi.board.vendor: Acer
dmi.board.version: V1.27
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V1.27
dmi.modalias: 
dmi:bvnAcer:bvrV1.27:bd03/01/2010:svnAcer:pnAspireone:pvrV1.27:rvnAcer:rnAspireone:rvrV1.27:cvnAcer:ct10:cvrV1.27:
dmi.product.name: Aspire one
dmi.product.version: V1.27
dmi.sys.vendor: Acer

** Affects: udev (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 lucid

-- 
Fn+F4 does not work on 10.04 and Acer Aspire One AOD250
https://bugs.launchpad.net/bugs/580682
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