[LAU] RTC/HPET timer permissions
Brent Busby
brent at keycorner.org
Sun Nov 25 19:05:26 UTC 2012
On Sun, 25 Nov 2012, Clemens Ladisch wrote:
> Brent Busby wrote:
>> Is it still necessary or recommended these days for proper operation
>> of audio apps to have a user-accessible /dev/rtc?
>
> Not really. Using the RTC or HPET devices directly is necessary only
> if the kernel does not use them for timers. Nowadays, kernels do, and
> applications use the proper timer APIs.
>
> You'd need this only if you're using some audio application that
> hasn't been updated for many years.
Ok, that explains why it's been a long time since I've seen those device
permissions actually break anything. The reason I ask though is because
the web site for Muse still has a section on making sure /dev/rtc is
accessible:
http://muse-sequencer.org/index.php/Faq#RTC_Timer
--
+ Brent A. Busby + "We've all heard that a million monkeys
+ Sr. UNIX Systems Admin + banging on a million typewriters will
+ University of Chicago + eventually reproduce the entire works of
+ James Franck Institute + Shakespeare. Now, thanks to the Internet,
+ Materials Research Ctr + we know this is not true." -Robert Wilensky
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