> > *PS-Mr. Hermans, why do you use an rt kernel?* > *talk soon and thanks!* > *-frenchy (Steve French)* > *www.voltvision.com <http://www.voltvision.com>*
It makes some things more deterministic, and I was writing some code that benefits from a lower latency kernel. It seemed to make a difference, but I have no hard numbers to substantiate that. On Fri, Nov 13, 2015 at 1:16 PM, Steve French <[email protected]> wrote: > Erik, Jason and all, > Yes, it looks like upgrading to the new kernel might have solved my > problems!! > > I did this: > sudo apt-get update > sudo apt-get install linux-image-4.1.12-bone16 > [reboot!!] > > debian@vBBB9-Office-Cl4:~$ uname -a > Linux vBBB9-Office-Cl4 4.1.12-bone16 #1 Wed Oct 28 07:32:53 UTC 2015 > armv7l GNU/Linux > debian@vBBB9-Office-Cl4:~$ lsusb > Bus 001 Device 002: ID 1a86:752d QinHeng Electronics CH345 MIDI adapter > Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub > debian@vBBB9-Office-Cl4:~$ aconnect -i > client 0: 'System' [type=kernel] > 0 'Timer ' > 1 'Announce ' > client 14: 'Midi Through' [type=kernel] > 0 'Midi Through Port-0' > client 16: 'USB2.0-MIDI' [type=kernel] > 0 'USB2.0-MIDI MIDI 1' > > This looks much better!!! I will try to access the midi stuff from Python > sometime next week. > Erik, let me know if this helps with your situation with SuperCollider. > > PS-Mr. Hermans, why do you use an rt kernel? > talk soon and thanks! > -frenchy (Steve French) > www.voltvision.com > > > On Friday, November 13, 2015 at 2:12:11 PM UTC-5, William Hermans wrote: >> >> Oh and right . . to be complete. >> >> Once you find an image you want, just apt-get install <linux-image> , and >> then reboot. However, if you're happy with your current image, and it is on >> eMMC, you may want to consider experimenting on and sdcard first. In fact, >> this is how I run all my own images ( when I'm not using NFS root, or >> whatever ). I actually still have angstrom with the original 3.8 kernel on >> it. Well on a Rev A5A I use. >> >> >> On Fri, Nov 13, 2015 at 12:08 PM, William Hermans <[email protected]> >> wrote: >> >>> Same image as mine, except perhaps you're using the LXDE image ? You >>> should be able to . . . >>> >>> $ apt-get update >>> $ apt-cache search linux-image | grep 4.1 >>> >>> I'm personally using . . . >>> $ uname -a >>> Linux beaglebone 4.1.9-bone-rt-r16 #1 Thu Oct 1 06:19:41 UTC 2015 armv7l >>> GNU/Linux >>> >>> >>> >>> >>> On Fri, Nov 13, 2015 at 12:04 PM, Steve French <[email protected]> >>> wrote: >>> >>>> William, >>>> For me I get this: >>>> debian@vBBB9-Office-Cl4:/opt/scripts/tools$ cat /etc/dogtag >>>> BeagleBoard.org Debian Image 2015-03-01 >>>> >>>> >>>> On Friday, November 13, 2015 at 1:58:51 PM UTC-5, William Hermans wrote: >>>>> >>>>> Steve, what's the output of >>>>> >>>>> $ cat /etc/dogtag >>>>> BeagleBoard.org Debian Image 2015-03-01 >>>>> >>>>> For you ? This is the major factor for apt-get installing <kernel> >>>>> >>>>> On Fri, Nov 13, 2015 at 11:56 AM, Steve French <[email protected]> >>>>> wrote: >>>>> >>>>>> Jason Kridner said: Can you try the 4.1 kernel? >>>>>> Frenchy says: Sorry for the dumb question, but can I just upgrade >>>>>> this image or do I need to download a new image? >>>>>> debian@vBBB9-Office-Cl4:~$ uname -a >>>>>> Linux vBBB9-Office-Cl4 3.8.13-bone70 #1 SMP Fri Jan 23 02:15:42 UTC >>>>>> 2015 armv7l GNU/Linux >>>>>> >>>>>> Is it as simple as this?: >>>>>> $ cd /opt/scripts/tools/ >>>>>> $ git pull >>>>>> $ ./update_kernel.sh >>>>>> >>>>>> If new image, where should I download it from? Thx! >>>>>> >>>>>> >>>>>>> >>>>>>> 2) I have found that things do show up in both systems using the >>>>>>> "lsusb" command....BUT for some reason something goes wrong during the >>>>>>> USB >>>>>>> enumeration process on the BBB. If you look at the output of "dmesg" >>>>>>> you >>>>>>> can see some strange descriptor errors that happen during the BBB >>>>>>> enumeration process. >>>>>>> >>>>>>> >>>>>>> Can you share? >>>>>>> >>>>>> >>>>>> Yep see the response I did a few minutes after you asked this. I >>>>>> didnt see this post while I was responding with my dmesg output. >>>>>> >>>>>> >>>>>>> Let's find a fix. If I can replicate, maybe some capacitance can be >>>>>>> shown to fix the issue. >>>>>>> >>>>>> >>>>>> I will be glad to test here. I hope we find a fix. Not sure if an >>>>>> unstable USB Vbus would cause this...it is interesting how lsusb always >>>>>> works, but the other things dont. >>>>>> >>>>>> thx, >>>>>> frenchy >>>>>> >>>>>> -- >>>>>> For more options, visit http://beagleboard.org/discuss >>>>>> --- >>>>>> You received this message because you are subscribed to the Google >>>>>> Groups "BeagleBoard" group. >>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>> send an email to [email protected]. >>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>> >>>>> >>>>> -- >>>> For more options, visit http://beagleboard.org/discuss >>>> --- >>>> You received this message because you are subscribed to the Google >>>> Groups "BeagleBoard" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to [email protected]. >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> >>> >> -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
