The same problem exists for 15c2:0037
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Timing problem (garbage characters) in lirc-driver for iMon PAD VFD 15c2:0036
https://bugs.launchpad.net/bugs/517956
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Status in “lirc” package in Ubuntu: In Progress
Bug description:
Binary package hint: lirc
In the lirc-driver for the Soundgraph iMon PAD VFD, USB-ID 15c2:0036, there is
a timing problem. Packets are sent too fast to the USB-Device. You can see that
you are affected by this problem, if you find similar lines in your syslog:
[...]
Feb 6 08:06:09 mythtv kernel: [ 47.727759] lirc_imon: vfd_write: send packet
failed for packet #2
Feb 6 08:06:09 mythtv kernel: [ 47.978904] lirc_imon: send_packet: packet tx
failed (-32)
Feb 6 08:06:09 mythtv kernel: [ 47.978909] lirc_imon: vfd_write: send packet
failed for packet #4
Feb 6 08:06:09 mythtv kernel: [ 48.223802] lirc_imon: send_packet: packet tx
failed (-32)
Feb 6 08:06:09 mythtv kernel: [ 48.223807] lirc_imon: vfd_write: send packet
failed for packet #2
Feb 6 08:06:09 mythtv kernel: [ 48.471698] lirc_imon: send_packet: packet tx
failed (-32)
Feb 6 08:06:09 mythtv kernel: [ 48.471703] lirc_imon: vfd_write: send packet
failed for packet #1
[...]
To fix the problem, you can apply the enclosed patch and rebuild the dkms lirc
modules:
cd /usr/src/lirc-0.8.6/
sudo dkms remove -m lirc -v 0.8.6 -k `uname -r`
sudo patch -p0 < lirc-0.8.6-VFD_0x0036_timing.patch
sudo dkms add -m lirc -v 0.8.6
sudo dkms build -m lirc -v 0.8.6
sudo dkms install --force -m lirc -v 0.8.6
The patch will add some 20 microseconds delay before each package send. It's
not the most beautiful solution, but until there is some corrected upstream,
this will help.
HTH, Edi
Guideline informations:
1) Ubuntu-Release:
Description: Ubuntu 9.10
Release: 9.10
2) Package Version:
lirc-modules-source:
Installed: 0.8.6-0ubuntu2
Candidate: 0.8.6-0ubuntu2
Version table:
*** 0.8.6-0ubuntu2 0
500 http://archive.ubuntu.com karmic/universe Packages
100 /var/lib/dpkg/status
3) What should happen:
Correct information displayed on the VFD
4) What happens:
Garbage characters displayed on VFD
ProblemType: Bug
Architecture: amd64
Date: Sat Feb 6 09:07:02 2010
DistroRelease: Ubuntu 9.10
Package: lirc-modules-source 0.8.6-0ubuntu2 [modified:
usr/src/lirc-0.8.6/drivers/lirc_imon/lirc_imon.c]
PackageArchitecture: all
ProcEnviron:
PATH=(custom, user)
LANG=de_CH.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-19.56-generic
SourcePackage: lirc
Uname: Linux 2.6.31-19-generic x86_64
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