[mythtv-users] Fedora 12 to Fedora 14: lirc / mce remote issue

[Michael Rice]

On Thu, Dec 16, 2010 at 9:20 PM, Rodd Clarkson <rodd at clarkson.id.au> wrote:
>
>
> On Fri, Dec 17, 2010 at 2:13 PM, Jarod Wilson <jarod at wilsonet.com> wrote:
>>
>> On Dec 16, 2010, at 7:09 PM, Rodd Clarkson wrote:
>>
>> > On Thu, Dec 16, 2010 at 5:34 PM, Grant McChesney <grantmc at gmail.com>
>> > wrote:
>> > On Wed, Dec 15, 2010 at 9:37 PM, Michael Rice <mikerice1969 at gmail.com>
>> > wrote:
>> > On Wed, Dec 15, 2010 at 7:08 PM, Newbury <newbury at mandamus.org> wrote:
>> > >
>> > >> Seems to have the same problem for me.
>> > >>
>> > >> [root at mythfrontend2 ~]# uname -a
>> > >> Linux mythfrontend2 2.6.35.10-67.fc14.i686.PAE #1 SMP Wed Dec 15
>> > >> 22:45:07 UTC 2010 i686 i686 i386 GNU/Linux
>> > >>
>> > >> Again the irw output from pressing a single Up after several Downs:
>> > >>
>> > >> [root at mythfrontend2 ~]# irw
>> > >> 0001006c00000001 00 Down devinput
>> > >> 0001006700000001 00 Up devinput
>> > >
>> > > And that is what you are looking for, unless I Missed something.
>> >
>> > Nope.  When I press Up I don't want it to register Down/Up.  Just Up.
>> >  :)
>> >
>> > It is still doing something strange.  One key press usually (or always?)
>> > generates two presses one of which is held until the next key is pressed
>> > at which time they both come out.
>> >
>> > In the output above I had hit a bunch of down keys.  Waited a few
>> > seconds
>> > then ran irw and hit a single Up.  At that point the buffered Down is
>> > emitted
>> > along with an Up.
>> >
>> > Glad I'm not the only one experiencing this behavior.  I've been hacking
>> > away at my lircd.conf trying to fix it.  I've resorted to my wireless
>> > keyboard until this gets sorted.
>> >
>> > Jarod, I look forward to the fix.  Thanks!
>> >
>> >
>> > Jarrod,
>> >
>> > I've just tried kernel-2.6.35.10-68 and it's better in terms of response
>> > time, and ironically it's worse because of this.  HUH?
>> >
>> > I think I'm getting double inputs from my remote because both lirc and
>> > evdev at using it as an input device.  When I press some keys on my remote,
>> > they seem to be doing things twice.  For example, press the up or down I
>> > sometimes skip an item in the menu.  However, I think this is related to
>> > evdev and lirc running at the same time.
>> >
>> > if I run `xev` and `irw` in two seperate terminal windows and then press
>> > the up and down keys on the remove I get in 'xev':
>> >
>> > KeyPress event, serial 30, synthetic NO, window 0x4800001,
>> >     root 0xbf, subw 0x0, time 654082, (630,511), root:(634,560),
>> >     state 0x10, keycode 111 (keysym 0xff52, Up), same_screen YES,
>> >     XLookupString gives 0 bytes:
>> >     XmbLookupString gives 0 bytes:
>> >     XFilterEvent returns: False
>> >
>> > KeyRelease event, serial 33, synthetic NO, window 0x4800001,
>> >     root 0xbf, subw 0x0, time 654331, (630,511), root:(634,560),
>> >     state 0x10, keycode 111 (keysym 0xff52, Up), same_screen YES,
>> >     XLookupString gives 0 bytes:
>> >     XFilterEvent returns: False
>> >
>> > KeyPress event, serial 33, synthetic NO, window 0x4800001,
>> >     root 0xbf, subw 0x0, time 655246, (630,511), root:(634,560),
>> >     state 0x10, keycode 116 (keysym 0xff54, Down), same_screen YES,
>> >     XLookupString gives 0 bytes:
>> >     XmbLookupString gives 0 bytes:
>> >     XFilterEvent returns: False
>> >
>> > KeyRelease event, serial 33, synthetic NO, window 0x4800001,
>> >     root 0xbf, subw 0x0, time 655614, (630,511), root:(634,560),
>> >     state 0x10, keycode 116 (keysym 0xff54, Down), same_screen YES,
>> >     XLookupString gives 0 bytes:
>> >     XFilterEvent returns: False
>> >
>> > and in 'irw' i get:
>> >
>> > 000000037ff07be1 00 Up mceusb
>> > 000000037ff07be0 00 Down mceusb
>> > 000000037ff07be0 01 Down mceusb
>> >
>> > As a result, my remote now skips every second menu item.
>> >
>> > Why is this worse?  We, because (and I'm taking an educated quess here)
>> > there were keypress delay issues in older kernels than the one above, if I
>> > pressed the buttons on the remote quickly, I saw only the output in the irw
>> > window.  However, if I held the button a little longer, i got output in both
>> > windows.  In the example above, I wouldn't have seen the KeyPress/Release
>> > event for the 'Up' action, but I would have got both Down events.
>> >
>> > Is it fair to assume that both evdev and lirc are giving mythtv a
>> > command each and that's why I'm going up and down two menu items at a time?
>> >
>> > How can I fix this?
>>
>> echo lirc > /sys/class/rc/rc0/protocols
>>
>> That effectively disables in-kernel decoding, setting only userspace
>> lirc decoding to be active. I'm going to push an updated lirc package
>> Real Soon Now that does this automatically (needs to be done every time
>> you reboot).
>
> Thanks Jarod for your quick response.
>
> I got this from another thread:
>
> echo none > /sys/class/rc/rc0/protocols
> echo +lirc > /sys/class/rc/rc0/protocols
>
> which I think is similar and it's worked a treat.
>
> I've stuck this into /etc/rc.local for the moment (is this the right place)
> and will remove when you get around to that new version of lirc RSN.
>
> With the combination of this above and the new kernel from koji my remote
> now works stupendously.  Thank you very much for all your hard work.

With kernel  2.6.35.10-68.fc14.i686.PAE everything seems to be working
great. Thanks Jarod!