Re: armhf vs buster problem #2
On Wednesday 03 July 2019 17:08:05 Gene Heskett wrote:
It was recommended I move these questions to the debian-user list, so
here it is.
> On Wednesday 03 July 2019 16:07:04 Andreas Jellinghaus wrote:
> > No idea. Sorry if I missed a mail with the reasons why stock debian
> > wouldn't work?
>
> The application needs a realtime kernel as its controlling metal
> cutting machinery.
>
> > On my ordroid-hc1 I build an sd card image on my deskop as described
> > in the wiki:
> > https://wiki.debian.org/InstallingDebianOn/OdroidHC1
> >
> > And with apt search I can see a realtime kernel is available:
> >
> > linux-image-rt-armmp/testing 4.19+105 armhf
>
> Maybe for your odroid, but the newest for raspian armhf is 4.19.50.
>
> I bought an odroid for this project around 3 years ago, but bricked it
> trying to get linux installed. What the don't tell you is that its a
> UEFI board, and the linux installers of the day didn't have a clue
> what to do about UEFI. So I've got a C2 that cost me two months to
> get, that because those folks are downright dishonest in not telling
> you that in their advertising, only in the bios did I discover that it
> had a TPM chip in it, which if its disabled in the bios, does not
> bypass that crap, bricking it instead and worse, you can't reverse it
> without spending another $125 for a jtag programmer. I already had a
> $100 bill in it and was not impressed enough to spend any more on it,
> so I next bought a pair of pi3b's. Which are running the machine
> fairly well except for the video frame rate. You can count the frames
> per second but you only need one hand as full screen its only about 2
> per second. Buster supposedly has new, faster drivers, but so far I
> have yet to get a realtime kernel and buster to meet on the same u-sd.
>
> > Linux for ARMv7 multiplatform compatible SoCs (meta-package),
> > PREEMPT_RT
> >
> > Maybe that could work for you?
>
> Unforch the armhf .deb of 4.19.50-rt-preempt-v7 I have built was not
> built to be installed by a u-boot aware builder.
>
> > Good luck with your project.
> >
> > Andreas
> >
> > Am Mi., 3. Juli 2019 um 21:15 Uhr schrieb Gene Heskett
> > <gheskett@shentel.net
> >
> > > I just yesterday watched RealtimePi make me an image for arm-v7.
> > > It went all the motions of building a 4.4.114-rt-v7 kernel out of
> > > a arm-hf buster zip containing a 4.19.50-v7 kernel. So knowing
> > > the 4.4.114-tr-preempt kernel would be replaced if I ever got the
> > > network to work, I added a /etc/apt/preferences.d/kernel.pref to
> > > pin the kernel.
> > >
> > > But imagine my surprise when I plugged that u-sd into the pi and
> > > booted it, one of the first things I note is that the images
> > > installed kernel is a 4.19.50-v7, which may be straight from the
> > > raspian-buster-zip RealtimePi started with.
> > >
> > > So, how do I convince CustomPiOS to both build the 4.19.50, with
> > > realtime patches applied, and then hand it back to RealtimePi to
> > > use building the image? I have done that independently from
> > > RealtimePi but no clue how make either of the guysoft utilities to
> > > actually use it.
> > >
> > > Help please, and thank you.
> > >
> > > Cheers, Gene Heskett
> > > --
> > > "There are four boxes to be used in defense of liberty:
> > > soap, ballot, jury, and ammo. Please use in that order."
> > > -Ed Howdershelt (Author)
> > > If we desire respect for the law, we must first make the law
> > > respectable. - Louis D. Brandeis
> > > Genes Web page <http://geneslinuxbox.net:6309/gene>
>
> Cheers, Gene Heskett
Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/gene>
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