[LAU] /dev/rtc permissions on Debian

Christopher Cherrett ccherrett at openoctave.org
Tue Jan 10 00:03:11 UTC 2012


Robert Jonsson wrote:
> Hi Rosea,
>
> 2012/1/9 rosea.grammostola <rosea.grammostola at gmail.com>:
>> On 01/09/2012 09:37 PM, James Stone wrote:
>>> Did you get any further with this? I had a look at the program, but
>>> it's a bit of a hefty compile what with all the dependencies. Looks
>>> pretty nice though!
>>>
>>> I seem to remember rosegarden used to complain about rtc access (at
>>> least it did in the past), but it never seemed to have a noticable
>>> impact on performance (at least to my ears).
>>>
>>> Thanks Ralf for the info on max-user-freq. I didn't realise this had
>>> anything to do with rtc, but I did have to change it in the past to
>>> get round some bad midi timing inconsistencies in seq24. Didn't know
>>> the new way to set it.
>>>
>>> James
>>>
>> Yes, followed the instructions by Ralf, seems to be ok now. Thanks!
>> Didn't realize this was a configuration step which has to be done still
>> these days.
> <....>
>>>>> RtcTimer::setTimerFreq(): cannot set tick on /dev/rtc: Permission denied
> Just some clarification as to the nature, Oom is based on MusE so the
> same error can occur for us (with MusE that is).
> I can see that the error message can be improved after reading Ralfs
> reply, usually the reason is due to device file permissions, didn't
> know it could actually be because of a value limitation. I'll give it
> a look for improvements.
>
> Also, having rtc timing is as someone noted not a strict requirement,
> as it will fall back on the system timer, though on many systems this
> is set too low.
>
> Regards,
> Robert
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https://github.com/ccherrett/oom/wiki/Troubleshooting

We have it listed in our trouble shooting section of our docs.

Look down at the bottom of that page.

Thanks!

-- 
Christopher Cherrett
ccherrett at openoctave.org
http://www.openoctave.org



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