[mythtv-users] Trouble with VFD

Jarod Wilson jarod at wilsonet.com
Mon Mar 22 21:15:23 UTC 2010


On Fri, Mar 19, 2010 at 9:41 PM, Eric Yanush <yanush2e at uregina.ca> wrote:
>> On Fri, Mar 19, 2010 at 1:07 AM, Eric Yanush <yanush2e at uregina.ca> wrote:
>>>>>> Hi,
>>>>>>
>>>>>> I having alot of trouble getting an antec veris elite vfd/ir combo to
>>>>>> work
>>>>>> under ubuntu karmic.
>>>>>> I can get the ir portion to function with no problems, but cannot get
>>>>>> any
>>>>>> sign of life from the vfd.
>>>>>> it has a device id of 0x0044
>>>>>>
>>>>>> After configuring lirc and lcdproc I end up with a dmesg output of :
>>>>>>
>>>>>> [   21.408199] lirc_imon: send_packet: packet tx failed (-32)
>>>>>> [   21.408203] lirc_imon: vfd_write: send packet failed for packet #2
>>>>>> [   21.656487] lirc_imon: send_packet: packet tx failed (-32)
>>>>>> [   21.656490] lirc_imon: vfd_write: send packet failed for packet #1
>>>>>> [   22.279698] lirc_imon: send_packet: packet tx failed (-32)
>>>>>> [   22.279701] lirc_imon: vfd_write: send packet failed for packet #1
>>>>>> [   22.520654] eth0: no IPv6 routers present
>>>>>> [   22.780632] lirc_imon: send_packet: packet tx failed (-32)
>>>>>> [   22.780635] lirc_imon: vfd_write: send packet failed for packet #5
>>>>>> [   22.903530] lirc_imon: send_packet: packet tx failed (-32)
>>>>>> [   22.903532] lirc_imon: vfd_write: send packet failed for packet #2
>>>>>> [   23.277822] lirc_imon: send_packet: packet tx failed (-32)
>>>>>> [   23.277826] lirc_imon: vfd_write: send packet failed for packet #2
>>>>>> [   23.778395] lirc_imon: send_packet: packet tx failed (-32)
>>>>>> [   23.778399] lirc_imon: vfd_write: send packet failed for packet #5
>>>
>>>>>>
>>>
>>>>>>
>>>
>>>>>> if I try the echo 'Hello mythtv... command with any combination of
>>>>>> lcdproc
>>>>>> and lirc running, with the lirc_imon driver loaded i get:
>>>>>>
>>>>>> -bash: /dev/lcd0: Permission denied
>>>>>>
>>>>>> run either as user or as root.
>>>>>>
>>>>>> Any ideas?
>>>>>
>>>>> -32 is -EPIPE... No clue wtf would trigger that. I have the exact same
>>>>> hardware in my own myth frontend box, works perfectly. What lcdproc
>>>>> driver are you trying to use to drive it?
>>>>>
>>>>> I have tried both lcdproc 0.5.2 and 0.5.3, with the imon driver, and the
>>>>> lirc modules lirc_imon and lirc_dev
>>>
>>>> I got nothin' then, that combo works perfectly here. Can you verify
>>>> the device isn't faulty by spinning it up under Windows?
>>>
>>> Works just fine under windows 7.
>>
>> The 'permission denied' trying to write to /dev/lcd0 even as root
>> sounds highly suspicious. Not sure what the fix would be though.
>>
>> Just tried something... As a normal user, I get similar behavior. As
>> root, I get:
>>
>> # echo foo > /dev/lcd0
>> -bash: /dev/lcd0: Device or resource busy
>>
>> When you say "as root", you don't mean "sudo echo foo > /dev/lcd0", do
>> you? Because that's *not* the same...
>
> Sorry.. I do mean  sudo echo...
> I did try using sudo chmod 755 /dev/lcd0 and then sudo echo... and then I get the
> -bash: /dev/lcd0: Device or resource busy

In that case, your device would appear to be behaving identically to
mine for all the things listed as tried in this thread. If you spin up
both LCDd and lcdproc, does the device not function?

-- 
Jarod Wilson
jarod at wilsonet.com


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