[Pkg-utopia-maintainers] Bug#762396: systemd: serial devices /dev/ttyS2 and /dev/ttyS3 do not work

[M G Berberich]

Am Montag, den 22. September schrieb Michael Biebl:
> Control: reassign -1 modemmanager
> 
> Am 22.09.2014 um 10:58 schrieb M G Berberich:
> > Hello,
> > 
> > Am Sonntag, den 21. September schrieb Michael Biebl:
> >> Am 21.09.2014 um 22:23 schrieb M G Berberich:
> >>> Package: systemd
> >>> Version: 208-8
> >>> Severity: normal
> >>>
> >>> Dear Maintainer,
> >>>
> >>> I have a card with two additional serial devices in the system, giving
> >>> /dev/ttyS2 and /dev/ttyS3. One with a thermal sensor and one with a
> >>> serial terminal. These serial devices do not work when the system is
> >>> started with systemd. They do work fine if sysvinit is used.
> >>
> >> Looking at the systemd-analyze dump, I see
> >>
> > …
> >>
> >> The devices seem to be functional, but maybe the getty on ttyS2
> >> interferes with what you want to do with ttyS2?
> > 
> > No, on ttyS2 there is a serial Terminal (VT320), so this is O.K.
> > 
> > But I found the problem:
> > It was modemmanager, which was _automatically_ installed. Modemmanager
> > screwed up ttyS3 and ttyS2 (perhaps the onboard ttyS0 and ttyS1 also,
> > but I can’t tell, because there is no device on ttyS0 and ttyS1 does
> > not even have a connector). Probably systemd/modemmanager/dbus assumes
> > that there must be a modem understanding AT-commands behind every
> > serial interface. Uninstalling modemmanager does the job.
> 
> Ok, re-assigning to modemmanager.
> Which version of modemmanager did you have installed?

The standard one from jessie: most likely 1.4.0-1

	MfG
	bmg

-- 
„Des is völlig wurscht, was heut beschlos- | M G Berberich
 sen wird: I bin sowieso dagegn!“          | berberic at fmi.uni-passau.de
(SPD-Stadtrat Kurt Schindler; Regensburg)  | www.fmi.uni-passau.de/~berberic