I've patched a 5ms exit delay into the send_packet() function in lirc_imon in current lirc cvs (and in the merged-upstream-in-2.6.35 imon driver). The microsecond delays were a bit on the low side. This 5ms delay doesn't show any functional regressions on any of the three imon devices I've got, and does indeed fix garbage displaying on my own 0x0044 (Antec Veris Elite) VFD -- a problem that only cropped up with the latest motherboard in this system, its been just fine w/all other motherboards (*only* the motherboard was changed in this system, all other components are identical to a prior setup where the VFD behaved just fine). lirc 0.8.7 should be released within a week or three, and will carry this fix (as does the imon driver in 2.6.35+).
-- Timing problem (garbage characters) in lirc-driver for iMon PAD VFD 15c2:0036 https://bugs.launchpad.net/bugs/517956 You received this bug notification because you are a member of Mythbuntu Bug Team, which is subscribed to lirc in ubuntu. Status in “lirc” package in Ubuntu: New 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 _______________________________________________ Mailing list: https://launchpad.net/~mythbuntu-bugs Post to : [email protected] Unsubscribe : https://launchpad.net/~mythbuntu-bugs More help : https://help.launchpad.net/ListHelp
