[mythtv-users] lirc imon mce failure under kernel 3.2

Wil nodenet at hotmail.com
Sat Jan 14 19:24:24 UTC 2012


I recently did a kernel upgrade under gentoo from 3.0.4 (with race patch) to
3.2.0. Unfortunately the imon IR receiver I use seems to fail to work
sometimes under 3.2.0 (i.e. either it works ok after boot up or not at all).
I'm using this with a Harmony One (using MCE remote device) and also the
original MCE remote for testing (it's more responsive than the harmony). The
VFD module of the imon seems to work fine irrespective of any IR failures
and the logs do not seem to indicate any problems. irw does not produce any
results either. Attempting to load / unload the rc modules didn't help
although from what I remember suspend resume seem to have issues (including
some breakage when unloading / loading modules for suspend/resume).
ir_keytable appeared to work when run manually but did not improve the
situation. 

# uname -a
Linux htpc-fe1 3.0.4-gentoo #2 SMP PREEMPT Sat Dec 10 20:59:25 GMT 2011
x86_64 Intel(R) Atom(TM) CPU D525 @ 1.80GHz GenuineIntel GNU/Linux

# dmesg | grep -i imon
[    2.039789] input: iMON Panel, Knob and Mouse(15c2:0036) as
/devices/pci0000:00/0000:00:1d.2/usb4/4-1/4-1:1.0/input/input2
[    2.072023] Registered IR keymap rc-imon-pad
[    2.072250] input: iMON Remote (15c2:0036) as
/devices/pci0000:00/0000:00:1d.2/usb4/4-1/4-1:1.0/rc/rc0/input3
[    2.072337] rc0: iMON Remote (15c2:0036) as
/devices/pci0000:00/0000:00:1d.2/usb4/4-1/4-1:1.0/rc/rc0
[    2.080101] imon 4-1:1.0: iMON device (15c2:0036, intf0) on usb<4:2>
initialized
[    2.080136] imon 4-1:1.1: iMON device (15c2:0036, intf1) on usb<4:2>
initialized
[    2.080177] usbcore: registered new interface driver imon

# uname -a
Linux htpc-fe1 3.2.0-gentoo-r1 #1 SMP PREEMPT Fri Jan 13 00:38:37 GMT 2012
x86_64 Intel(R) Atom(TM) CPU D525 @ 1.80GHz GenuineIntel GNU/Linux

# dmesg | grep -i imon
[    2.047411] input: iMON Panel, Knob and Mouse(15c2:0036) as
/devices/pci0000:00/0000:00:1d.2/usb4/4-1/4-1:1.0/input/input2
[    2.080025] Registered IR keymap rc-imon-pad
[    2.080314] input: iMON Remote (15c2:0036) as
/devices/pci0000:00/0000:00:1d.2/usb4/4-1/4-1:1.0/rc/rc0/input3
[    2.080386] rc0: iMON Remote (15c2:0036) as
/devices/pci0000:00/0000:00:1d.2/usb4/4-1/4-1:1.0/rc/rc0
[    2.088126] imon 4-1:1.0: iMON device (15c2:0036, intf0) on usb<4:2>
initialized
[    2.088161] imon 4-1:1.1: iMON device (15c2:0036, intf1) on usb<4:2>
initialized
[    2.088210] usbcore: registered new interface driver imon

I use the following in /etc/conf.d/lircd to determine the device

LIRCD_OPTS="-H devinput -d
/dev/input/by-path/pci-0000:00:1d.2-usb-0:1:1.0-event"

and didn't see any indication this needed adjustment.

So I'm not sure whether or not this is a bug or even if it is specifically
related to lirc / imon at the moment. It might be useful to find out the
cause though as I'm sure others may hit the same problem in the future.

Will





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