Hello,
I'm working on setup of an IR RemoteControl. Specifically, a
'Streamzap' IR remote, with its included USB-connected IR receiver.
I'm configuring it as a LIRC remote _only_, in a specific app (XBMC,
fwiw), and NOT as a keyboard/remote in/for any other app.
I've been unable to manage disabling conflicts between the
assignment/registration of the IR Remote as BOTH a keyboard & a remote.
I'd like to learn how to effectively DISable the interfering modules;
without necessarily having to recompille the kernel.
Here's what I'm seeing.
On Linux kernel -- whether
uname -a
Linux rpi.loc 3.10.18 #2 PREEMPT Tue Nov 12 16:04:38 UTC
2013 armv6l GNU/Linux
@ an arm-based RaspberryPi, or
uname -a
Linux desk.loc 3.7.10-1.16-desktop #1 SMP PREEMPT Fri
May 31 20:21:23 UTC 2013 (97c14ba) x86_64 x86_64 x86_64
GNU/Linux
@ an x86_64 desktop, I find @ boot that the attached device is
recognized & registered as an MCE device (here, e.g., @ Rpi),
dmesg | egrep -i "stream|lirc"
[ 4.537755] usb 1-3.1: Product: Streamzap Remote
Control
[ 4.537756] usb 1-3.1: Manufacturer: Streamzap, Inc.
[ 17.122902] Registered IR keymap rc-streamzap
[ 17.134146] input: Streamzap PC Remote Infrared
Receiver (0e9c:0000) as
/devices/pci0000:00/0000:00:12.2/usb1/1-3/1-3.1/1-3.1:1.0/rc/rc0/input8
[ 17.134244] rc0: Streamzap PC Remote Infrared
Receiver (0e9c:0000) as
/devices/pci0000:00/0000:00:12.2/usb1/1-3/1-3.1/1-3.1:1.0/rc/rc0
[ 17.134315] streamzap 1-3.1:1.0: Registered
Streamzap, Inc. Streamzap Remote Control on usb1:4
[ 17.219672] IR RC5 (streamzap) protocol handler
initialized
[ 17.290559] usbcore: registered new interface driver
streamzap
>>> [ 17.417754] input: MCE IR Keyboard/Mouse (streamzap) as
>>> /devices/virtual/input/input9
[ 17.469336] lirc_dev: IR Remote Control driver
registered, major 249
[ 17.486010] rc rc0: lirc_dev: driver ir-lirc-codec
(streamzap) registered at minor = 0
[ 17.507386] IR LIRC bridge handler initialized
which is not what I want.
To prevent that, I've tried to blacklist MCE* and IR_RC5* drivers in
/etc/modprobe.d/{blacklist,MODULE}.conf, to no effect. The
registration, and the load of associated modules, still occurs, as seen
in dmesg.
This has the result that I've been experiencing conflicts between
keypresses being recognized as MCE 'keyboard' presses and LIRC 'remote'
keypresses.
Where there's an X server in use, reading
http://wiki.xbmc.org/index.php?title=How-to:Setup_Streamzap_PC_Remote_for_Linux#Xinput:_Preventing_Streamzap_from_becoming_a_keyboard
and editing
cat /etc/X11/xorg.conf.d/05-streamzap.conf
Section "InputClass"
Identifier "Ignore Streamzap IR as KEYBOARD or
MOUSE"
MatchIsKeyboard "on"
MatchProduct "treamzap|MCE IR"
Option "Ignore" "true"
EndSection
manages to prevent the MCE-related conflict. However, where there's NO
X env, e.g. on the RPi, I lose that option.
Working on the RPi, I finally got this under control by recompiling its
kernel, setting the kernel config specifically to DISable the unwanted
MCE* and IR_* modules,
CONFIG_LIRC=m
CONFIG_IR_LIRC_CODEC=m
CONFIG_IR_STREAMZAP=m
CONFIG_IR_MCE_KBD_DECODER=n
CONFIG_IR_MCEUSB=n
CONFIG_LIRC_STAGING=n
CONFIG_IR_JVC_DECODER=n
CONFIG_IR_NEC_DECODER=n
CONFIG_IR_RC5_DECODER=n
CONFIG_IR_RC5_SZ_DECODER=n
CONFIG_IR_RC6_DECODER=n
CONFIG_IR_SANYO_DECODER=n
CONFIG_IR_SONY_DECODER=n
CONFIG_LIRC_IGORPLUGUSB=n
CONFIG_LIRC_IMON=n
CONFIG_LIRC_RPI=n
CONFIG_LIRC_XBOX=n
CONFIG_LIRC_SASEM=n
CONFIG_LIRC_SERIAL=n
CONFIG_LIRC_SERIAL_TRANSMITTER=n
CONFIG_LIRC_SIR=n
CONFIG_LIRC_ZILOG=n
Now, @ Rpi, I've simply
lsmod | egrep -i "sz|streamzap|lirc"
ir_lirc_codec 3100 3
lirc_dev 7036 1 ir_lirc_codec
rc_streamzap 668 0
streamzap 3425 0
rc_core 11688 4
streamzap,ir_lirc_codec,rc_streamzap
and setup of standalone LIRC-daemon connection/use of the remote is as
expected -- remote-only, and no interruptions/intererference by
'keyboard' assignments, in-/out-side of the current target app, XBMC.
So, I have a workaround that meets my need. Atm, it appears to require
the seemingly heavy-handed recompile of the kernel, cleaned of the
unwanted Media modules.
I'd prefer to avoid the hassle, and use standard distro kernel, but
manage to effectively disable the unwanted/interfering modules.
What's the correct/effective method to turn off specifically the
unwanted MCE*/IR_* interference, whether disable the modules, or other
method?
rand
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