Re: [Rosegarden-user] snd-rtctimer

2014-07-15 Thread Holger Marzen
On Mon, 14 Jul 2014, r...@hydrophones.com wrote:

  On Sat, 12 Jul 2014, German wrote:
 
  Hello list. Just installed Rosegarden. However when I start it, it says:
  Rosegarden was unable to find a high-resolution
  timing source for MIDI performance. It then advice me to load the
  module, modeprobe snd-rtctimer. However I don't have such a module on
  this system. How serious is this? Thanks
 
  Use a Kernel with HZ1000 set. Those kernel packages have usually
  lowlatency in their name. The message vanishes then.
 
  Lowlatency kernels are good both for Rosegarden and for JACK.
 
 
 Unfortunately they tend NOT TO WORK with proprietary graphics drivers from
 AMD/ATI and NVidia.

Don't confuse them with realtime kernels. Lowlatency kernels are just
configured differently, not patched.

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Re: [Rosegarden-user] snd-rtctimer

2014-07-14 Thread ram
 On Sat, 12 Jul 2014, German wrote:

 Hello list. Just installed Rosegarden. However when I start it, it says:
 Rosegarden was unable to find a high-resolution
 timing source for MIDI performance. It then advice me to load the
 module, modeprobe snd-rtctimer. However I don't have such a module on
 this system. How serious is this? Thanks

 Use a Kernel with HZ1000 set. Those kernel packages have usually
 lowlatency in their name. The message vanishes then.

 Lowlatency kernels are good both for Rosegarden and for JACK.


Unfortunately they tend NOT TO WORK with proprietary graphics drivers from
AMD/ATI and NVidia.

My recommendation, is to ignore the message, and try Rosegarden out with
your existing configuration and see if you can notice any problems/delays.
If there is a problem you can always switch kernels IF the version you are
using is not necessary for the graphics driver you are using.






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Re: [Rosegarden-user] snd-rtctimer

2014-07-13 Thread Holger Marzen
On Sat, 12 Jul 2014, German wrote:

 Hello list. Just installed Rosegarden. However when I start it, it says: 
 Rosegarden was unable to find a high-resolution
 timing source for MIDI performance. It then advice me to load the module, 
 modeprobe snd-rtctimer. However I don't have such a module on this system. 
 How serious is this? Thanks

Use a Kernel with HZ1000 set. Those kernel packages have usually
lowlatency in their name. The message vanishes then.

Lowlatency kernels are good both for Rosegarden and for JACK.

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Re: [Rosegarden-user] snd-rtctimer

2014-07-12 Thread ram
 Hello list. Just installed Rosegarden. However when I start it, it says:
 Rosegarden was unable to find a high-resolution
 timing source for MIDI performance. It then advice me to load the module,
 modeprobe snd-rtctimer. However I don't have such a module on this system.
 How serious is this? Thanks

 --
 German gentger...@gmail.com


Hi,

I haven't found it to make any practical difference on (semi) modern
hardware.  If you are using external MIDI synths, keyboards, filters, and
other accessories, particularly legacy ones, they introduce their own
errors which are bigger.  Perhaps if you a sequencing an entire orchestra
it might, perhaps, just maybe ;-)

ram


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