Re: Fernando's comment on Ubuntu Distro's where the Tascam US-122 worked out of the box
On Fri, 2011-01-14 at 18:12 +, Fernando Gomes wrote: > > If you won't build a kernel and apps yourself you should switch to AV > > Linux or Planet CCRMA etc. and avoid openArtist, Ubuntu Studio etc.. > > Lurk Linux audio mailing lists ;). > > > > I've already used AV Linux and Planet CCRMA before, but not after > upgrading my PC, I'll try them soon on it :-) > > Following Mike's advice (and some work) I've at last a low latency > kernel on my Maverick installation :-) > For the current kernel versions available on Alessio PPA (for Natty) > the linux headers are needed, and for others with similar problems > that I had (putting a low latency kernel on a Ubuntu Maverick > installation), I've made a post on my 'web log', at > http://www.openstudio.info > > Thanks and best regards > > Fernando If the Maverick-Natty-Mix is ok, you should make a backup, before doing upgrades. It's even dangerous to add third party repositories for the used version of a Linux distro, that's why apps like synaptic and yast2 try to take care when upgrading. Yast2 ask you before switching repositories for an upgrade and synaptic has got several options for doing upgrades and a history. -- Ubuntu-Studio-users mailing list Ubuntu-Studio-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
Re: Fernando's comment on Ubuntu Distro's where the Tascam US-122 worked out of the box
On Fri, 2011-01-14 at 18:12 +, Fernando Gomes wrote: > and for others with similar problems > that I had (putting a low latency kernel on a Ubuntu Maverick > installation), I've made a post on my 'web log', at > http://www.openstudio.info Thank you ... worked like a champ on my Dell Inspiron. Cheers, Tim -- *** Timothy Cook, MSc Project Lead - Multi-Level Healthcare Information Modeling http://www.mlhim.org LinkedIn Profile:http://www.linkedin.com/in/timothywaynecook Skype ID == timothy.cook Academic.Edu Profile: http://uff.academia.edu/TimothyCook You may get my Public GPG key from popular keyservers or from this link http://timothywayne.cook.googlepages.com/home signature.asc Description: This is a digitally signed message part -- Ubuntu-Studio-users mailing list Ubuntu-Studio-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
Re: Fernando's comment on Ubuntu Distro's where the Tascam US-122 worked out of the box
> If you won't build a kernel and apps yourself you should switch to AV > Linux or Planet CCRMA etc. and avoid openArtist, Ubuntu Studio etc.. > Lurk Linux audio mailing lists ;). > I've already used AV Linux and Planet CCRMA before, but not after upgrading my PC, I'll try them soon on it :-) Following Mike's advice (and some work) I've at last a low latency kernel on my Maverick installation :-) For the current kernel versions available on Alessio PPA (for Natty) the linux headers are needed, and for others with similar problems that I had (putting a low latency kernel on a Ubuntu Maverick installation), I've made a post on my 'web log', at http://www.openstudio.info Thanks and best regards Fernando -- Ubuntu-Studio-users mailing list Ubuntu-Studio-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
Re: Fernando's comment on Ubuntu Distro's where the Tascam US-122 worked out of the box
Pfff :( I guess the dependencies will be found in the regular Ubuntu Natty repositories ;). I'm not sure if Ubuntu Studio or this list can be taken seriously, because especially a real-time system needs to be proper. There are reasons that Natty repositories are for Natty and not for Maverick. Of cause, a lot of bins will work with any Linux, but IMHO nobody should mess a real-time Linux with kernels for even other versions of the same distro. Yes, Hydrogen + a virtual guitar effect rack will work even when using a generic kernel, but real-time is for music productions, hard disk recording + sequencer + ... and not only for one, two, three, four chart music. On March the 3d in the Jazzclub Tonne Dresden Jasper van't Hof will play my old DX7, http://www.youtube.com/watch?v=32baf2bTHBs , if somebody should be in Dresden that time, you should visit the concert. Imagine a Ubuntu Studio setup using Hexter on Ubuntu Studio instead, just regarding to real-time (not regarding to the sound of Hexter) for the kind of music Achim and Jasper do. If you play 'music', but four to the flour or Metallica like trash your DAW needs to be stable without any timing issues. For music only a full real-time kernel is usable. Avoid PREEMPT without RT or PREEMPT RT kernels for other versions of your distro. Will rtirq from the repositories of the distro version you use, fit to kernels for the next version of your distro etc. pp.? When using a kernel for another version you need to take care about things like this. If you won't build a kernel and apps yourself you should switch to AV Linux or Planet CCRMA etc. and avoid openArtist, Ubuntu Studio etc.. Lurk Linux audio mailing lists ;). 2 Cents, Ralf On Wed, 2011-01-12 at 18:31 -0500, Mike Holstein wrote: > i just got the -lowlatency one, and i just installed the 2 main > packages and didnt use the one that had dependency issues... the > -realtime one is older anyways, and i think abogani said he needed to > wait on something upstream before making it... im finding great > performance with the -lowlatency in natty, at least comparable to > -realtime in lucid... just grab the 2 other .debs there and dont worry > about the other one... > > On Wed, Jan 12, 2011 at 6:20 PM, Fernando Gomes > wrote: > On Wed, Jan 12, 2011 at 5:45 PM, Mike Holstein > wrote: > > i am using abogani's kernels in both maverick and natty on a > testing > > machine, with great results... this is a nice guide i found > when google-ing > > 'ubuntu 10.10 realtime kernel' about the 6th result down... > > > > http://jackschnippes.freeunix.net/index.php/2010/11/04/lowlatency-kernel-and-realtime-kernel-for-ubuntu-10-10-maverick > > the -lowlatency kernel in natty is even working very well > with my firewire > > device... > > > Hi Mike > > I was trying to get the files from the guide you refer, but > for the > low latency 64 bit the links are not working: > > > http://ppa.launchpad.net/abogani/ppa/ubuntu/pool/main/l/linux-lowlatency/linux-headers-2.6.36-1-lowlatency_2.6.36-1.7~ppa2_amd64.deb > > http://ppa.launchpad.net/abogani/ppa/ubuntu/pool/main/l/linux-lowlatency/linux-image-2.6.36-1-lowlatency_2.6.36-1.7~ppa2_amd64.deb > > I've browsed the abogani ppa and there are only 2.6.37 kernels > (Natty). If I try to use them I have unresolved dependencies: > > Depends: linux-headers-2.6.37-11 but it is not installable > > Where can I find the linux-headers-2.6.37-11 to add in order > to solve > these dependencies on Maverick? > > Best regards > > Fernando > > -- > > Ubuntu-Studio-users mailing list > Ubuntu-Studio-users@lists.ubuntu.com > Modify settings or unsubscribe at: > https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users > > > > > -- > MH > > http://opensourcemusician.libsyn.com/ > http://wnclug.ourproject.org/ -- Ubuntu-Studio-users mailing list Ubuntu-Studio-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
Re: Fernando's comment on Ubuntu Distro's where the Tascam US-122 worked out of the box
i just got the -lowlatency one, and i just installed the 2 main packages and didnt use the one that had dependency issues... the -realtime one is older anyways, and i think abogani said he needed to wait on something upstream before making it... im finding great performance with the -lowlatency in natty, at least comparable to -realtime in lucid... just grab the 2 other .debs there and dont worry about the other one... On Wed, Jan 12, 2011 at 6:20 PM, Fernando Gomes wrote: > On Wed, Jan 12, 2011 at 5:45 PM, Mike Holstein wrote: > > i am using abogani's kernels in both maverick and natty on a testing > > machine, with great results... this is a nice guide i found when > google-ing > > 'ubuntu 10.10 realtime kernel' about the 6th result down... > > > http://jackschnippes.freeunix.net/index.php/2010/11/04/lowlatency-kernel-and-realtime-kernel-for-ubuntu-10-10-maverick > > the -lowlatency kernel in natty is even working very well with my > firewire > > device... > > Hi Mike > > I was trying to get the files from the guide you refer, but for the > low latency 64 bit the links are not working: > > > http://ppa.launchpad.net/abogani/ppa/ubuntu/pool/main/l/linux-lowlatency/linux-headers-2.6.36-1-lowlatency_2.6.36-1.7~ppa2_amd64.deb > > http://ppa.launchpad.net/abogani/ppa/ubuntu/pool/main/l/linux-lowlatency/linux-image-2.6.36-1-lowlatency_2.6.36-1.7~ppa2_amd64.deb > > I've browsed the abogani ppa and there are only 2.6.37 kernels > (Natty). If I try to use them I have unresolved dependencies: > > Depends: linux-headers-2.6.37-11 but it is not installable > > Where can I find the linux-headers-2.6.37-11 to add in order to solve > these dependencies on Maverick? > > Best regards > > Fernando > > -- > Ubuntu-Studio-users mailing list > Ubuntu-Studio-users@lists.ubuntu.com > Modify settings or unsubscribe at: > https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users > -- MH http://opensourcemusician.libsyn.com/ http://wnclug.ourproject.org/ -- Ubuntu-Studio-users mailing list Ubuntu-Studio-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
Re: Fernando's comment on Ubuntu Distro's where the Tascam US-122 worked out of the box
On Wed, Jan 12, 2011 at 5:45 PM, Mike Holstein wrote: > i am using abogani's kernels in both maverick and natty on a testing > machine, with great results... this is a nice guide i found when google-ing > 'ubuntu 10.10 realtime kernel' about the 6th result down... > http://jackschnippes.freeunix.net/index.php/2010/11/04/lowlatency-kernel-and-realtime-kernel-for-ubuntu-10-10-maverick > the -lowlatency kernel in natty is even working very well with my firewire > device... Hi Mike I was trying to get the files from the guide you refer, but for the low latency 64 bit the links are not working: http://ppa.launchpad.net/abogani/ppa/ubuntu/pool/main/l/linux-lowlatency/linux-headers-2.6.36-1-lowlatency_2.6.36-1.7~ppa2_amd64.deb http://ppa.launchpad.net/abogani/ppa/ubuntu/pool/main/l/linux-lowlatency/linux-image-2.6.36-1-lowlatency_2.6.36-1.7~ppa2_amd64.deb I've browsed the abogani ppa and there are only 2.6.37 kernels (Natty). If I try to use them I have unresolved dependencies: Depends: linux-headers-2.6.37-11 but it is not installable Where can I find the linux-headers-2.6.37-11 to add in order to solve these dependencies on Maverick? Best regards Fernando -- Ubuntu-Studio-users mailing list Ubuntu-Studio-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
Re: Fernando's comment on Ubuntu Distro's where the Tascam US-122 worked out of the box
On Wed, 2011-01-12 at 22:31 +0100, Ralf Mardorf wrote: > On Tue, 2011-01-11 at 21:01 +, Bernard Hurley wrote: > > On Tue, Jan 11, 2011 at 10:54:51AM -0600, Brian David wrote: > > > > On a total tangent - can any of you comment (in lay terms if possible) > > > > on > > > > the real-time kernel? > > > > Personally I am running Maverick but am using Bogani's Lucid kernel most of > > the time but I have several kernels instlled so I can switch between them. > > > > > > For Lucid: > > > > > > There is a real-time kernel in the official Ubuntu repositiories, the > > > package is called linux-rt. > > > > This is one of the kernels I have installed. > > > > > > > > There are no official real-time kernels available for Maverick. Some > > > people seem to have successfully used Bogani's Natty kernels > > > > I think maybe I will try this. > > > > > > > > There are other issues with real-time in Maverick and Natty that have > > > recently come to light. This page will fill you in: > > > > > > http://jackaudio.org/linux_group_sched > > > > What is the stuff about "cgroups" about? > > > > Bernard > > Pooost scriptum: > > spinymouse1...@suse11-2:~> > cat /media/ded93dfb-37ae-48cf-a3a3-b613aa5704fd/boot/config-2.6.33.7.2-rt30 | > grep RT_GROUP_SCHED > CONFIG_RT_GROUP_SCHED=y > > Ok, I need to rebuild my kernel and if somebody will follow my howto > it's needed in /usr/src/linux to run > > $ gedit .config > > and then, by Ctrl + F to search for RT_GROUP_SCHED and to edit > CONFIG_RT_GROUP_SCHED=y to CONFIG_RT_GROUP_SCHED is not set ;). > > I guess anything else should be ok :),but I'm not able to test it before > the next weekend or later. > > Pardon, to be safe then run $ make oldconfig and after that build the kernel. -- Ubuntu-Studio-users mailing list Ubuntu-Studio-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
Re: Fernando's comment on Ubuntu Distro's where the Tascam US-122 worked out of the box
On Tue, 2011-01-11 at 21:01 +, Bernard Hurley wrote: > On Tue, Jan 11, 2011 at 10:54:51AM -0600, Brian David wrote: > > > On a total tangent - can any of you comment (in lay terms if possible) on > > > the real-time kernel? > > Personally I am running Maverick but am using Bogani's Lucid kernel most of > the time but I have several kernels instlled so I can switch between them. > > > > For Lucid: > > > > There is a real-time kernel in the official Ubuntu repositiories, the > > package is called linux-rt. > > This is one of the kernels I have installed. > > > > > There are no official real-time kernels available for Maverick. Some > > people seem to have successfully used Bogani's Natty kernels > > I think maybe I will try this. > > > > > There are other issues with real-time in Maverick and Natty that have > > recently come to light. This page will fill you in: > > > > http://jackaudio.org/linux_group_sched > > What is the stuff about "cgroups" about? > > Bernard Pooost scriptum: spinymouse1...@suse11-2:~> cat /media/ded93dfb-37ae-48cf-a3a3-b613aa5704fd/boot/config-2.6.33.7.2-rt30 | grep RT_GROUP_SCHED CONFIG_RT_GROUP_SCHED=y Ok, I need to rebuild my kernel and if somebody will follow my howto it's needed in /usr/src/linux to run $ gedit .config and then, by Ctrl + F to search for RT_GROUP_SCHED and to edit CONFIG_RT_GROUP_SCHED=y to CONFIG_RT_GROUP_SCHED is not set ;). I guess anything else should be ok :),but I'm not able to test it before the next weekend or later. -- Ubuntu-Studio-users mailing list Ubuntu-Studio-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
Re: Fernando's comment on Ubuntu Distro's where the Tascam US-122 worked out of the box
PPS: On Tue, 2011-01-11 at 21:01 +, Bernard Hurley wrote: > On Tue, Jan 11, 2011 at 10:54:51AM -0600, Brian David wrote: > > There are other issues with real-time in Maverick and Natty that have > > recently come to light. This page will fill you in: > > > > http://jackaudio.org/linux_group_sched > > What is the stuff about "cgroups" about? > > Bernard I marked this to read myself next weekend! Perhaps this is bad for my HOWTO, if so, don't enable it. -- Ubuntu-Studio-users mailing list Ubuntu-Studio-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
Re: Fernando's comment on Ubuntu Distro's where the Tascam US-122 worked out of the box
PS: Perhaps a package is missing :), so install it too, what I wrote + additional package: [snip] > # synaptic > > Install: > > git-core > libncurse5 > libncurse5-dev libelf-dev [snip] > Correct timer from 250Hz to 1000Hz Timerferq ;) -- Ubuntu-Studio-users mailing list Ubuntu-Studio-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
Re: Fernando's comment on Ubuntu Distro's where the Tascam US-122 worked out of the box
On Tue, 2011-01-11 at 10:54 -0600, Brian David wrote: > For Maverick: > > There are no official real-time kernels available for Maverick. Some > people seem to have successfully used Bogani's Natty kernels with > Maverick, so that is perhaps an option. There are other PPAs > available, as well, and you could build your own kernel, too. I'm not copying from the terminal emulation, but typing it now, so there might be some typos. ### Preparing to build the kernel $ sudo -i # uname -r It should be 2.6.35-24-generic. # synaptic 'fakeroot' might be already installed, but you additionally need to install: build-essential crash kexec-tools makedumpfile kernel-wedge # apt-get build-dep linux # synaptic Install: git-core libncurse5 libncurse5-dev asciidoc binutils-dev kernel-package # usermod -a -G src your_username Push Ctrl + D $ cd /usr/src $ wget ftp://ftp.kernel.org/pub/linux/kernel/v2.6/linux-2.6.33.7.tar.bz2 http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.33.7.2-rt30.bz2 ### Extracting the sources and patching the kernel $ tar xjf linux-2.6.33.7.tar.bz2 $ rm linux-2.6.33.7.tar.bz2 $ mv linux-2.6.33.7 linux-2.6.33.7.2-rt30 $ ln -s linux-2.6.33.7.2-rt30 linux $ cd linux $ bunzip2 ../patch-2.6.33.7.2-rt30.bz2 $ patch -p1 < ../patch-2.6.33.7.2-rt30 $ rm ../patch-2.6.33.7.2-rt30 ### Editing a configuration $ cp /boot/config-$(uname -r) .config $ make oldconfig GROUP_SCHED y Complete Preemption anything else just enter $ make menuconfig Correct timer from 250Hz to 1000Hz and disable debug info. If you wish too, you can optimise to your CPU, e.g. Opteron/Athlon64/Hamkmer/K8 instead of the default Pentium-Pro. Save $ make oldconfig Ther should be nothing to do. $ gedit .config Edit CONFIG_STAGING=y to CONFIG_STAGING is not set (use Ctrl + F to find it). $make oldconfig There shouldn't be anything to do. ### Building the kernel $ make-kpkg clean (On a multi-core computer only: $ export CONCURRENCY_LEVEL=2) $ make-kpkg --rootcmd fakeroot --initrd kernel-image kernel-headers $ sudo make clean $ ls .. $ sudo dpkg -i ../names_of_the_packages While for this kernel-rt, for Lucid amd64, clean Ubuntu Studio, the NVIDIA packages from the repositories will add modules to all kernels in /boot, for Maverick this doesn't work on my Edubuntu + Ubuntu Studio packages i386 Maverick. Hth and that I didn't made to much typos or any other mistake when writing this email, Ralf -- Ubuntu-Studio-users mailing list Ubuntu-Studio-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
Re: Fernando's comment on Ubuntu Distro's where the Tascam US-122 worked out of the box
i am using abogani's kernels in both maverick and natty on a testing machine, with great results... this is a nice guide i found when google-ing 'ubuntu 10.10 realtime kernel' about the 6th result down... http://jackschnippes.freeunix.net/index.php/2010/11/04/lowlatency-kernel-and-realtime-kernel-for-ubuntu-10-10-maverick the -lowlatency kernel in natty is even working very well with my firewire device... On Wed, Jan 12, 2011 at 5:42 AM, Fernando Gomes wrote: > I commited the "error" of updating do Maverick to find out that there > was no 'special' kernel to it ;-) > I can tell you that using the standard Maverick Ubuntu Kernel i don't > have many issues, using hydrogen, rackarack and zynaddsubfx, even with > some processor hungry effects on rackarack.But today what are the > special (low latency, rt) kernels that can be used with maverick (even > not being specific to Maverick)? It seems that natty kernels from > Alessio could be used, I tried to add the ppa from Alessio to my > repositories, if i keep the Maverick label it doesn't add any new > kernel, if I change the label to Natty I get new kernels available, > but the intalation process fail because of missig dependencies. Any > tip on how to add a low latency or rt kernel to Maverick? > > Best regards > > Fernando > > On Wed, Jan 12, 2011 at 9:18 AM, Bernard Hurley > wrote: > > On Wed, Jan 12, 2011 at 12:59:35AM +0100, ailo wrote: > >> As for Maverick, there seems to be no lowlatency or rt kernel for it, so > >> perhaps it would be recommendable to try sticking with Lucid, until > >> Natty can become a replacement. > >> > > > > Thanks, > > > > Bernard > > > > > > -- > > Ubuntu-Studio-users mailing list > > Ubuntu-Studio-users@lists.ubuntu.com > > Modify settings or unsubscribe at: > https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users > > > > -- > Ubuntu-Studio-users mailing list > Ubuntu-Studio-users@lists.ubuntu.com > Modify settings or unsubscribe at: > https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users > -- MH http://opensourcemusician.libsyn.com/ http://wnclug.ourproject.org/ -- Ubuntu-Studio-users mailing list Ubuntu-Studio-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
Re: Fernando's comment on Ubuntu Distro's where the Tascam US-122 worked out of the box
I commited the "error" of updating do Maverick to find out that there was no 'special' kernel to it ;-) I can tell you that using the standard Maverick Ubuntu Kernel i don't have many issues, using hydrogen, rackarack and zynaddsubfx, even with some processor hungry effects on rackarack.But today what are the special (low latency, rt) kernels that can be used with maverick (even not being specific to Maverick)? It seems that natty kernels from Alessio could be used, I tried to add the ppa from Alessio to my repositories, if i keep the Maverick label it doesn't add any new kernel, if I change the label to Natty I get new kernels available, but the intalation process fail because of missig dependencies. Any tip on how to add a low latency or rt kernel to Maverick? Best regards Fernando On Wed, Jan 12, 2011 at 9:18 AM, Bernard Hurley wrote: > On Wed, Jan 12, 2011 at 12:59:35AM +0100, ailo wrote: >> As for Maverick, there seems to be no lowlatency or rt kernel for it, so >> perhaps it would be recommendable to try sticking with Lucid, until >> Natty can become a replacement. >> > > Thanks, > > Bernard > > > -- > Ubuntu-Studio-users mailing list > Ubuntu-Studio-users@lists.ubuntu.com > Modify settings or unsubscribe at: > https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users > -- Ubuntu-Studio-users mailing list Ubuntu-Studio-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
Re: Fernando's comment on Ubuntu Distro's where the Tascam US-122 worked out of the box
On Wed, Jan 12, 2011 at 12:59:35AM +0100, ailo wrote: > As for Maverick, there seems to be no lowlatency or rt kernel for it, so > perhaps it would be recommendable to try sticking with Lucid, until > Natty can become a replacement. > Thanks, Bernard -- Ubuntu-Studio-users mailing list Ubuntu-Studio-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
Re: Fernando's comment on Ubuntu Distro's where the Tascam US-122 worked out of the box
On 01/11/2011 10:01 PM, Bernard Hurley wrote: > On Tue, Jan 11, 2011 at 10:54:51AM -0600, Brian David wrote: >>> On a total tangent - can any of you comment (in lay terms if possible) on >>> the real-time kernel? > > Personally I am running Maverick but am using Bogani's Lucid kernel most of > the time but I have several kernels instlled so I can switch between them. >> >> For Lucid: >> >> There is a real-time kernel in the official Ubuntu repositiories, the >> package is called linux-rt. > > This is one of the kernels I have installed. > >> >> There are no official real-time kernels available for Maverick. Some >> people seem to have successfully used Bogani's Natty kernels > > I think maybe I will try this. > >> >> There are other issues with real-time in Maverick and Natty that have >> recently come to light. This page will fill you in: >> >> http://jackaudio.org/linux_group_sched > > What is the stuff about "cgroups" about? > > Bernard > cgroups only affects the Natty's generic kernel, to my knowlegde. It makes realtime impossible for a standard installation of jack and jack applications, even when belonging to audio group. This does not happen on Alessio Boganis -lowlatency kernel for Natty. As for Maverick, there seems to be no lowlatency or rt kernel for it, so perhaps it would be recommendable to try sticking with Lucid, until Natty can become a replacement. -- ailo -- Ubuntu-Studio-users mailing list Ubuntu-Studio-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
Re: Fernando's comment on Ubuntu Distro's where the Tascam US-122 worked out of the box
On Tue, Jan 11, 2011 at 10:54:51AM -0600, Brian David wrote: > > On a total tangent - can any of you comment (in lay terms if possible) on > > the real-time kernel? Personally I am running Maverick but am using Bogani's Lucid kernel most of the time but I have several kernels instlled so I can switch between them. > > For Lucid: > > There is a real-time kernel in the official Ubuntu repositiories, the > package is called linux-rt. This is one of the kernels I have installed. > > There are no official real-time kernels available for Maverick. Some > people seem to have successfully used Bogani's Natty kernels I think maybe I will try this. > > There are other issues with real-time in Maverick and Natty that have > recently come to light. This page will fill you in: > > http://jackaudio.org/linux_group_sched What is the stuff about "cgroups" about? Bernard -- Ubuntu-Studio-users mailing list Ubuntu-Studio-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
Re: Fernando's comment on Ubuntu Distro's where the Tascam US-122 worked out of the box
> On a total tangent - can any of you comment (in lay terms if possible) on > the real-time kernel? I was under the impression that Ubuntu Studio utilizes > a real time kernel, making it superior to other OS's, distros or flavors of > Ubuntu. I thought I had read somewhere that this RTK has been abandoned and > will not be available anymore? Comments? > > Casey > Here's the situation on real-time kernels. For Lucid: There is a real-time kernel in the official Ubuntu repositiories, the package is called linux-rt. It is not installed automatically by Ubuntu Studio, because it is based off an older version of the vanilla Ubuntu kernel. It still works well, though. A lot of people on this list (perhaps most, and including myself) use the kernels in Alessio Bogani's PPA, information for which can be found here: https://launchpad.net/~abogani/+archive/ppa For Maverick: There are no official real-time kernels available for Maverick. Some people seem to have successfully used Bogani's Natty kernels with Maverick, so that is perhaps an option. There are other PPAs available, as well, and you could build your own kernel, too. For Natty: At this point, the kernels available in Bogani's PPA are the wants you will want to use for Natty. There will no longer be any real-time kernels in any official repositories, for various reasons, including lack of enough support to maintain one. It is a goal to have one of the low latency kerenls that Bogani has developed be put into an official repo for Natty, but I have not recently heard about how that is going. There are other issues with real-time in Maverick and Natty that have recently come to light. This page will fill you in: http://jackaudio.org/linux_group_sched I'm not positive about this, but I think Bogani's kernels have been updated to solve this problem. By the way, I'm glad to hear you've got your interface working. -- -Brian David -- Ubuntu-Studio-users mailing list Ubuntu-Studio-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
