[LAU] /dev/rtc permissions on Debian

rosea.grammostola rosea.grammostola at gmail.com
Mon Jan 9 21:30:15 UTC 2012


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.

Regards,
\r



> On 1/8/12, rosea.grammostola<rosea.grammostola at gmail.com>  wrote:
>> On 01/08/2012 08:09 PM, rosea.grammostola wrote:
>>> This is the full message:
>>> RtcTimer::setTimerFreq(): cannot set tick on /dev/rtc: Permission denied
>>> precise timer not available
>>>
>>> AlsaTimer::initTimer(): best available ALSA timer: system timer
>>>
>>>
>>> On 01/08/2012 07:50 PM, R. Mattes wrote:
>>>> cat /proc/sys/dev/hpet/max-user-freq
>>>
>>> cat /sys/class/rtc/rtc0/max_user_freq
>>> 64
>>>
>>> 2048 is a good value?
>>>
>>> Thanks
>>>
>>> Regards,
>>> \r
>>
>> $ cat /proc/sys/dev/hpet/max-user-freq
>> 64
>>
>>



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