<Fn><F2> and <Fn><Fn><F3> without effect

farinet at arcor.de farinet at arcor.de
Thu May 15 05:43:39 UTC 2014

lubuntu-users-request at lists.ubuntu.com:
> Hi,
> What kind of computer is this that you are using?  I am using an iBook
> and the keys work out of the box for me.  Do you have any special
> configurations you have made?  Also, did you choose the correct keyboard
> layout?
> I have also noticed xev doesn't make sense of the Fn Key.... 

It's a Samsung 535 U3C (amd processor and amd graphics). Here comes what
inxi says:

System:    Host: <user>-535U3C Kernel: 3.13.0-26-generic x86_64 (64 bit)
Desktop: LXDE (Openbox 3.5.2)
           Distro: Ubuntu 14.04 trusty
Machine:   System: SAMSUNG product: 535U3C v: P01RAG
           Mobo: SAMSUNG model: SAMSUNG_NP1234567890 v:
           Bios: American Megatrends v: P01RAG.N43.120612.LEO date:
CPU:       Dual core AMD A6-4455M APU with Radeon HD Graphics (-MCP-)
cache: 4096 KB
           Clock Speeds: 1: 2100 MHz 2: 2100 MHz
Graphics:  Card: Advanced Micro Devices [AMD/ATI] Trinity [Radeon HD 7500G]
           Display Server: X.Org 1.15.1 drivers: ati,fglrx (unloaded:
           Resolution: 1366x768 at 60.1hz
           GLX Renderer: AMD Radeon HD 7500G GLX Version: 4.3.12798 -
CPC 13.35.1005
Audio:     Card-1 Advanced Micro Devices [AMD] FCH Azalia Controller
driver: snd_hda_intel
           Card-2 Advanced Micro Devices [AMD/ATI] Trinity HDMI Audio
Controller driver: snd_hda_intel
           Sound: Advanced Linux Sound Architecture v: k3.13.0-26-generic
Network:   Card-1: Qualcomm Atheros AR9462 Wireless Network Adapter
driver: ath9k
           IF: wlan0 state: up mac: 50:b7:c3:13:d4:e6
           Card-2: Realtek RTL8111/8168/8411 PCI Express Gigabit
Ethernet Controller driver: r8169
           IF: eth0 state: down mac: e8:03:9a:e0:0b:d4
           Card-3: Atheros

Now, Linux and this Samsung are not really friends ;). Since kernel >
3.2 i did not have any effective powermanagement (no suspend, no
hibernate,no close_lid). Now, since the latest kernels 3.12 and higher
and the newest catalyst driver that problem is solved, fortunately.

In xev the XF86 keys are taken by xfce powermanagement (in the default
lubuntu-rc.xml there are settings considering this case). If you
uninstall it you get it in xev.

But it seems to me that not only the XF86 keys are blocked but also
xbacklight. It does not change the backlight even if startet out of a
terminal, though it runs: 'xbacklight -h' runs, only applying the
commands like -dec -inc set etc. does not have any effect.

Without xfce powermanagement, i'm getting the backlight +/i popup by
pushing the correct <Fn>keys, but they don't have any effect.

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