[ale] help with udev rule

[Ed Cashin]

Yeah.  I think udev is perhaps uncharacteristically complex and fickle, as
far as Linux things go.

On Aug 4, 2016 2:28 PM, "Todor Fassl" <fassl.tod at gmail.com> wrote:

> Darn! I just tried the rule on an ubuntu xenial machine and it didn't work
> at all! It works fine for debian jessie.
>
> $$#@#%%^^! systemd or whatever! I mean, ubuntu and debian are pretty
> similar. If my rule doesn't work on ubuntu, what are the odds of it working
> for fedora or suse? Why doesn't anything ever work from one system to
> another?
>
> I don't care what anybody says -- linux is hard.
>
> On 08/03/2016 08:10 PM, Ed Cashin wrote:
>
>> Software changes, but all the modprobe versions I've seen only load the
>> requested driver if it isn't already loaded.  Subsequent invocations for
>> an
>> already loaded driver are pretty much harmless.
>>
>> Are there any ill consequences you're seeing?
>>
>> On Wed, Aug 3, 2016 at 12:26 PM, Todor Fassl <fassl.tod at gmail.com> wrote:
>>
>> All,
>>>
>>> I want to write a udev rule to load a driver for a hardware speech
>>> synthesizer. Many synths have both USB and serial connectors. The linux
>>> screen reader always uses the serial port. But I thought I could write a
>>> udev rule to detect when the synth is plugged into the USB port and then
>>> load the driver for the serial port. So a blind person would have to plug
>>> the synth into both the serial and the USB ports but I don't figure that
>>> is
>>> a problem.  It is way easier than trying to log in without speech and
>>> then
>>> try to type in the modprobe command. I am hoping to write a whole series
>>> of
>>> these rules and then make them available for download.
>>>
>>> I got a rule to work but it seems to try to load the driver several
>>> times.
>>> Is anybody experienced enough with udev rules to tell me if this is a
>>> problem and if so, how it can be fixed? Here is my rule:
>>>
>>> ACTION=="add", SYSFS{idVendor}=="0dd0", SYSFS{idProduct}=="1002",
>>> RUN="/sbin/modprobe speakup_ltlk"
>>>
>>>
>>> --
>>> Todd
>>> _______________________________________________
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>>> Ale at ale.org
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>>> http://mail.ale.org/mailman/listinfo
>>>
>>>
>>
>>
>>
>>
>> _______________________________________________
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>>
>>
> --
> Todd
> _______________________________________________
> Ale mailing list
> Ale at ale.org
> http://mail.ale.org/mailman/listinfo/ale
> See JOBS, ANNOUNCE and SCHOOLS lists at
> http://mail.ale.org/mailman/listinfo
>
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