Puppy Linux Discussion Forum

stemsee · Joined: 27 Jun 2013 Posts: 2572 Location: In The Way

Rockedge

Maybe you could build a more recent kernel (5.3/4) using the latest 5.2.21 rt patch. Or report the errors from patching.

stemsee

rockedge · Posted: Thu 28 Nov 2019, 10:56 Post subject:

▶—— Linux Kernel ——◀

Kernel Release: 4.19.82-rt30 SMP PREEMPT RT
Build Date: RT Wed Nov 27 09:24:12 EST 2019
Build GCC: 7.4.0
OS Support: GNU/Linux
Architecture: x86_64
SMP Enabled: Yes

Kernel Command Line:
psubdir=/BB64 pmedia=atahd pfix=fsck net.ifnames=0

This is a fully preemptible kernel and can be applied for use as CNC machine controller, for electronic music production and software synthesizers and audio / video recording and editing or any real time applications one wants a Puppy Linux to do.

Downloads ->
http://rockedge.org/kernels/
http://rockedge.org/kernels/data/kernel/64bit/4.19.82-rt30_full_rt_64/huge-4.19.82-bionicpup64.tar.bz2

**

stemsee · Joined: 27 Jun 2013 Posts: 2572 Location: In The Way

5.3.14 x86_64
https://drive.google.com/open?id=1ZA1Md0sJpN6ZEAASZ_WjFPPV30ZnCcXa

EDIT: This and the previous kernel, were compiled on an NTFS partition!

festus · Joined: 14 Jan 2015 Posts: 224

stemsee · Joined: 27 Jun 2013 Posts: 2572 Location: In The Way

Hi rockedge

I'm using your rt kernel with fatdog64. After fine tuning my system for realtime audio processing I get a recording latency of 1.3ms which is plenty good enough for duplex recording with live instruments; this is on a core i3 3217U with 4gb ram.

The only thing is that you configure the kernel with CONFIG_HZ_300=y it would probably give better performance/timer resolution if CONFIG_HZ_1000=y instead!

I tried to compile a newer rt kernel but it failed and I didn't troubleshoot.

Very nice anyway.
stemsee

Dry Falls · Joined: 16 Dec 2014 Posts: 610 Location: Upper Columbia

Aufs 5.4 is up and running. Latest nubuild.sh zipped through the k5.4.6. Posting from it now.

rockedge · Posted: Mon 30 Dec 2019, 20:30 Post subject:

Hey Dry Falls!

Thanks for the info.

rockedge · Posted: Tue 31 Dec 2019, 09:33 Post subject:

I attempted to build a RT kernel 5.4.5 using the 5.4.5-rt3 patches but half way through applying the RT patches there is an error and the build stops.

This the same problem so far with any attempt to compile a RT kernel with any kernel version 5+

I have not tried out nubuild.sh but I will today.

peterw · Joined: 19 Jul 2006 Posts: 420 Location: UK

I don't know if this is the best place to request additions to the Puppy DOTconfig but I will and hopefully someone will point me in the right direction if I am wrong.

Basically, Puppy is one of the best Distros to use on a Chromebook, especially, as they near EOL after 6.5 years from the Chromebook type release (and many are in that sate). One of the issues is that some of the sound chips are not supported in Puppy. This is currently being discussed here: http://www.murga-linux.com/puppy/viewtopic.php?t=117617.

To try and find a solution, I recompiled the kernel to get it to recognise the max98090 chip and the relevant part of my DOTcongfig file is shown below. However, looking at it I see that I have not caught all types of Chromebooks as there are two other "is not set" values also shown.

# CONFIG_SND_SST_ATOM_HIFI2_PLATFORM_PCI is not set
CONFIG_SND_SST_ATOM_HIFI2_PLATFORM_ACPI=m
# CONFIG_SND_SOC_INTEL_SKYLAKE is not set
CONFIG_SND_SOC_ACPI_INTEL_MATCH=m
CONFIG_SND_SOC_INTEL_MACH=y
CONFIG_SND_SOC_INTEL_HASWELL_MACH=m
CONFIG_SND_SOC_INTEL_BDW_RT5677_MACH=m
CONFIG_SND_SOC_INTEL_BROADWELL_MACH=m
CONFIG_SND_SOC_INTEL_BYTCR_RT5640_MACH=m
CONFIG_SND_SOC_INTEL_BYTCR_RT5651_MACH=m
CONFIG_SND_SOC_INTEL_CHT_BSW_RT5672_MACH=m
CONFIG_SND_SOC_INTEL_CHT_BSW_RT5645_MACH=m
CONFIG_SND_SOC_INTEL_CHT_BSW_MAX98090_TI_MACH=m
CONFIG_SND_SOC_INTEL_CHT_BSW_NAU8824_MACH=m
CONFIG_SND_SOC_INTEL_BYT_CHT_DA7213_MACH=m
CONFIG_SND_SOC_INTEL_BYT_CHT_ES8316_MACH=m
CONFIG_SND_SOC_INTEL_BYT_CHT_NOCODEC_MACH=m

Perhaps the experts who know much more than I and compile more advanced kernels could add those features in future compilations

stemsee · Joined: 27 Jun 2013 Posts: 2572 Location: In The Way

Hello Peterw

These options pertain to the snd-soc/ucm sound card that comes with atom processor chips.

I submitted a kernel DOTconfig for atom cpu to woof-ce > kernel-kit. it should have everything enabled.

stemsee

peterw · Joined: 19 Jul 2006 Posts: 420 Location: UK

Hi Stemsee

I cloned git to get at the kernel compile kit and missed that? I adjusted the DOTconfig that I did get from an existing Bionicpup64 and it did not have the modules enabled in it. I apologise for missing that DOTconfig and it reminds to be more careful.

You mention UCM and I have had a look at that. Puppy includes it in /usr/share/alsa/ucm and when I look at that the contents there they are different than those that I downloaded from Gallium (I think). Does one just merge the two to get extra coverage. Sorry for such a stupid question.

The other query I have is that will kernels for future Puppies and Fatdog pick up on your work for that DOTconfig and include those modules?

I read much of your post and thank for all your good work. It is much appreciated.

stemsee · Joined: 27 Jun 2013 Posts: 2572 Location: In The Way

rockedge · Posted: Sat 04 Jan 2020, 11:10 Post subject:

I managed to compile a low latency PREEMPT version of kernel 5.4.5-rt3_x86_64 using the kerne-kit, which is working well with great idle numbers and low CPU loads.

I still am looking for a solution to applying the patches needed to build a full RT kernel out of this version

have made it avallable in this form here -> http://rockedge.org/kernels/