[TriEmbed] BBB kernel > 3.8 experience

[Carl Nobile]

Alex,

Yeah, I couldn't quite remember what it was that didn't work with kernel
3.15, but I knew there were issues. It really all comes down to what you
need to work and choosing the right kernel for it.

I agree with you about the BBB, it's a pain to work with all the overlays.
The big issue I have with the RPi is the lack of a usable 2nd serial port.
You either use the one they have for a project or use it for logging in
with, but not both. I find this a big pain in the butt.

Haven't bought an RPi2 yet, but was thinking of clustering a few together.
I have too many projects that I want to do and very little time to do any.

Carl


On Tue, May 5, 2015 at 12:10 PM, Alex Davis <alexd at matrixwide.com> wrote:

>  Carl,
>
> I got wireless working with this USB adapter (
> https://www.adafruit.com/product/1012  RTl8192cu) by going to
> /opt/tools/scripts and running ./upgrade_kernel after first editing another
> config file (name escapes me) which enabled third-party modules. If you
> want I'll dig up what file I had to change.
>
> However, this adapter (
> http://www.logicsupply.com/components/networking/wireless/uwn100/
> RT2870STA) worked under 3.8 but does not seem to work on 3.15.
>
> All this trouble makes me nostalgic for my Orinoco Gold cards which just
> worked when you plugged them in, didn't require a proprietary firmware
> file, and had all their hardware features supported. I still have a few of
> these.
>
> Now that the Pi2 is out with 4 cores, I'm not as excited about the BBB and
> its PRUs as I once was. My success/fail rate on the BBB has not been as
> high as with the Pi. I'm inclined to either brute-force things with the
> multi-cores or bolt on a standard microcontroller for the realtime stuff.
>
>
>
> On Mon, May 4, 2015, at 02:04 PM, Carl Nobile wrote:
>
> Alex,
>
> I myself was going to upgrade to a newer kernel until I read that all
> sorts of stuff didn't work yet on the newer ones. I guess that's why 3.8 is
> the current standard. I last read this about a month ago and things can
> change quickly, so I'd do a search first before you try it. Anyway what the
> harm, if you have issues then just revert to the old one.
>
> Carl
>
>
> On Mon, May 4, 2015 at 1:29 PM, Alex Davis via TriEmbed <
> triembed at triembed.org> wrote:
>
> Anyone have experience with running a kernel newer than 3.8 on the
> BeagleBone Black (BBB)? I'd like to do it, as 3.8.x seems to have USB
> issues which prevent a webcam from working properly.
>
> I've tried the Ubuntu 14.04 eMMC flasher, which does get you to 3.15 (or
> something like that) where USB works well, but it does not seem to
> include much in the way of wireless drivers and nor do the guides easily
> adding them in 3.8 seem to apply.
>
> It's possible the eMMC versions omit the drivers due to space reasons.
> I'll try a full 4 GB 14.04 soon. I'd prefer to boot from the eMMC but
> will settle for booting from the SD card.
>
> I'm aware you can cross-compile a kernel and I may have to do that, but
> don't want to.
>
> As an aside, I'd heard the BBB was designed to fit in an Altoids tin, so
> I decided to find out how much work it is vs. just buying a decent metal
> case from someplace like Logic Supply. The answer is, unless you don't
> value your time, it's not worth it. Too much drilling, fiddling with
> finding the right sort of standoffs to clear the DVI port, and work with
> the tin snips and nibbler.
>
> --
> "The theater of noise is proof of our potential."
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> --
>
> -------------------------------------------------------------------------------
> Carl J. Nobile (Software Engineer)
> carl.nobile at gmail.com
>
> -------------------------------------------------------------------------------
>
>
> --
> "The theater of noise is proof of our potential."
> |\ | (¯ \/ |¯\ |V| |\ ¯|¯ |¯) | \/ | | | |¯\ (¯ /¯ /\ |V|
> |-||_ (_ /\ |_/ @| | |-| | | \ | /\ |^| | |_/ (_ . \_ \/ | |
>
> You won't find me on Facebook.
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>
>



-- 
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Carl J. Nobile (Software Engineer)
carl.nobile at gmail.com
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