Page 1 of 2

PI 4b+ (1g) won't see MMDVM

Posted: Fri Aug 23, 2019 9:09 am
by n9mxq
On my second duplex board thinking I got a bad one first go around. Set it up like my DMR Duplex hotspot, and PI-Star won't see the modem.

Sudo pistar-findmodem seems to get stuck in a search loop and just sits there.. Anyone else have this issue. Pi-star is 4.1.0 RC1 freshly burned to a new SD Card.

Re: PI 4b+ (1g) won't see MMDVM

Posted: Fri Aug 23, 2019 2:14 pm
by KE0FHS
Gene, there was some issue with 4.1.0-RC1 that caused Andy to pull it. Try downloading RC2.

Re: PI 4b+ (1g) won't see MMDVM

Posted: Fri Aug 23, 2019 2:30 pm
by n9mxq
Dang, how did I miss that??? Thanks Toshen, I'll get it tonight after work and report back.. worse that can happen is I have a spare duplex board.. lol

Re: PI 4b+ (1g) won't see MMDVM

Posted: Fri Aug 23, 2019 10:30 pm
by n9mxq
Burned RC2.. No Bueno.. half the time it won't save settings. Having the WiFi connect issue that seems prevalent..

Put one of the Duplex boards on a Pi0w and it's up an running in 5 minutes..

Frustrating.. But I'll win yet...

Re: PI 4b+ (1g) won't see MMDVM

Posted: Fri Aug 23, 2019 10:35 pm
by KE0FHS
Yeah, the Pi-Star 4.1 WiFi issues are frustrating. I finally got things working somewhat better by using 2.4 GHz (and by making sure my router didn't try to kick the hotspot up to 5.0 GHz based on the capability of the RPi 4B board). Funny, because I'm using another RPi 4B to run Raspbian and am having to problem with it whatsoever.

Re: PI 4b+ (1g) won't see MMDVM

Posted: Fri Aug 23, 2019 11:08 pm
by n9mxq
Well, I'm making progress. Got it on WiFi, sudo pistar-update completed with no errors (finally) Still won't see modem #1.. Switching to Modem #2 (which worked on the Pi0w) to see if maybe I got a bad modem in #1.

Re: PI 4b+ (1g) won't see MMDVM

Posted: Fri Aug 23, 2019 11:17 pm
by n9mxq
OK, well I'm about to give up. Both Duplex MMDVMs work fine on the Pi0w.. Neither will on the 4b+...

I'm off to order another 3b+.. Or maybe 2.. since I have 2 duplex MMDVMs doing nothing ;-)

Re: PI 4b+ (1g) won't see MMDVM

Posted: Fri Aug 23, 2019 11:36 pm
by n9mxq
And in another frustrating twist. Put my Zumspot on the 4b+ and it's all rainbows and unicorns... (Bangs head on desk)

Re: PI 4b+ (1g) won't see MMDVM

Posted: Sat Aug 24, 2019 1:28 am
by KE0FHS
n9mxq wrote: Fri Aug 23, 2019 11:36 pm And in another frustrating twist. Put my Zumspot on the 4b+ and it's all rainbows and unicorns... (Bangs head on desk)
Ain't life grand! :)

Re: PI 4b+ (1g) won't see MMDVM

Posted: Sat Aug 24, 2019 12:49 pm
by MW0MWZ
I've just been looking into this - there is a weird problem on the Pi4, not exactly sure what happens, but the long and short of it - is that *some* modems get stuck in reset and won't boot.

So far I have seen this on Zumspot GPIO and MMDVM HS_HAT boards.

I am working on a fix, in the short term, you can try updating Pi-Star and then running this on the CLI:

Code: Select all

sudo pistar-mmdvmhshatreset
You should get an output similar to:

Code: Select all

pi-star@pi-star(ro):~$ sudo pistar-mmdvmhshatreset
Resetting Modem: MMDVM_HS_Hat (DB9MAT & DF2ET) for Pi (GPIO)
Warning: Stopping mmdvmhost.service, but it can still be activated by:
  mmdvmhost.timer
Reset Complete
pi-star@pi-star(ro):~$
followed directly by your modem springing to life.

I need to add the Dual boards to the command, I only have simplex boards in there right now - I'll have that done in a few mins