[mythtv-users] Setting up a USB IR receiver (Streamzap)

Sat Feb 10 20:31:16 UTC 2007

Ok, those dmesg errors were from a change that I had made to the lirc source
from apt (0.8.0-9).  I got a cvs snapshot from lirc.org, version 0.8.1-pre5,
and it worked after chaning the "SLAB_ATOMIC"'s to "GFP_ATOMIC" in order to
get it to compile.  Looks like everything is working now.

That was WAY too much effort.

On 2/10/07, Chris Weiland <hobbiticus at gmail.com> wrote:
>
> Here we go...this is my dmesg when I unplug then plug in the streamzap:
> usb 2-2: USB disconnect, address 5
> usb 2-2: new low speed USB device using ohci_hcd and address 6
> usb 2-2: configuration #1 chosen from 1 choice
> lirc_dev: Unknown symbol devfs_mk_cdev
> lirc_dev: Unknown symbol devfs_remove
> lirc_streamzap: Unknown symbol lirc_unregister_plugin
> lirc_streamzap: Unknown symbol lirc_register_plugin
>
> That appears to be my problem, but I have no idea how to fix it - google
> shows next to no pages when I search for that error.  Any ideas?
>
> On 2/10/07, Chris Weiland <hobbiticus at gmail.com> wrote:
> >
> > I do see the messages in dmesg when I plug/unplug the device.
> >
> > I do not know where the HID input layer support is in the kernel
> > config.  I just tried looking for it and didn't see it.  Can you be more
> > specific?
> >
> > Also, upon further research, it looks like I need to make the streamzap
> > lirc module and then a dev/lircX device should show up.  However I'm having
> > lots of trouble with this.  The lirc-modules-source package is supposed to
> > have this module, but it doesn't compile.  However, I was able to fix the
> > compilation errors, but all it seems to do in the end is install some .o
> > files in /lib/modules/usr/src/linux- 2.6.20/misc (lirc_dev.o,
> > lirc_gpio.o, lirc_i2c.o, lirc_streamzap.o).  I don't know what these files
> > are supposed to do, and their location is very odd.
> >
> > So, I'm going to try removing the lirc binary package and build it
> > myself.
> >
> > I built and installed it, and now I have /dev/lirc, /dev/lircd, and
> > /dev/lircm.  However, /dev/lirc does not seem to be a valid device:
> > # ls -l /dev/lirc*
> > crw-r--r-- 1 root root 61, 0 2007-02-10 14:50 /dev/lirc
> > prw-r--r-- 1 root root     0 2007-02-10 14:50 /dev/lircd
> > prw-r--r-- 1 root root     0 2007-02-10 14:50 /dev/lircm
> > # cat /dev/lirc
> > cat: /dev/lirc: No such device or address
> >
> > There are no new devices in /dev/usb or /dev/input or /dev/hiddev*
> >
> > Hopefully I'm getting closer...
> >
> > On 2/10/07, Brian Wood < beww at beww.org> wrote:
> > >
> > >
> > > On Feb 10, 2007, at 12:31 PM, Neil Cherry wrote:
> > >
> > > > Chris Weiland wrote:
> > > >> This isn't really a mythtv specific question, but I don't know of
> > > >> many
> > > >> other places to look.  I just got a Streamzap USB IR receiver, and
> > > I
> > > >> can't seem to figure out how to use it.
> > > >>
> > > >> My problem is that I can't get a /dev entry for it.  I think
> > > there's
> > > >> supposed to be a /dev/usb/hiddev0 that is used to interface with
> > > the
> > > >> device, but that file is not there, and I can't figure out how to
> > > >> get it
> > > >> there.  Everywhere I've searched says that I just need to enable
> > > the
> > > >> "/dev/hiddevX support" kernel option and then everything will work.
> > >
> > > >> Well, after doing that, the device still doesn't show up anywhere
> > > in
> > > >> /dev.  I can see the device being detected in dmesg whenever I
> > > >> remove or
> > > >> plug in the device.  The device shows up in /proc/bus/usb/devices,
> > > >> lsusb, and usbview, but usbview shows it in red, which, according
> > > >> to one
> > > >> site, means that there is "no driver bound to it".  How would I
> > > >> fix this?
> > > >>
> > > >> I think I've also read somewhere that I should be using "hotplug",
> > > >> which
> > > >> I guess refers to the hotplug package.  However, if I try to
> > > >> install it,
> > > >> apt forces me to remove udev.  Do I want to do this?
> > > >>
> > > >> I'm running Debian Etch, kernel 2.6.20.
> > > >
> > > > Don't remove udev but remove the usb device, do a dmesg, make a
> > > > general note of the last few lines, plug in the usb device and
> > > > do another dmesg. Did you see the new lines? One of them may
> > > > be an assignment for the device driver. Also if the hid is a kernel
> > > > module check to see that it's loaded (lsmod) you should see an
> > > > hid entry (and maybe another hid... something). Sorry I can't
> > > > remember more at this moment.
> > > >
> > >
> > > Not specific to Debian but with Gentoo (and I assume all kernels) you
> > > need to make sure "HID Input Layer support as well as /dev/hiddev raw
> > > HID input device support are both enabled in the kernel.
> > >
> > > Having the first and not the second will result in precisely the
> > > behavior you describe, though there are of course other things that
> > > might cause it as well.
> > > _______________________________________________
> > > mythtv-users mailing list
> > > mythtv-users at mythtv.org
> > > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
> > >
> >
> >
>
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