[PATCH] Add some troubleshooting to user manual

[Jef Driesen]

On 29-06-13 21:45, Dirk Hohndel wrote:
> On Sat, 2013-06-29 at 11:31 -0700, Linus Torvalds wrote:
>> On Sat, Jun 29, 2013 at 8:50 AM, Bearsh <me at bearsh.org> wrote:
>>>
>>> maybe also mention the possibility to blacklist certain serial devices
>>> for modem manager (there mighty be people using it and also using a
>>> divecomputer the same time).
>>
>> I'd rather just teach people to remove the idiotic ModemManager crap.
>>
>> There's no excuse for MM taking over all serial lines it sees, and
>> people shouldn't need to blacklist things with odd udev rules. People
>> should just remove MM or post a bug against MM.
>
> So Linus - I agree with you that enabling ModemManager by default in
> Linux distributions in 2013 is complete lunacy and should be treated as
> a bug. But then again, I see the issue itself a little bit along the
> lines of "yes, this other software is broken, but that's not the users'
> fault".
> So for the two Subsurface users out there who actually need ModemManager
> to be running, I'm inclined to include an explanation how to do that.
> AFTER pointing out that in almost all cases the correct solution is to
> disable ModemManager and file a bug with the distro.
>
> I was hoping to cut 3.1.1 today or tomorrow morning (just arrived from
> China). Have people tested the binaries? Any outstanding patches?

It seems the ModemManager issue should disappear soon, once this upstream commit 
is shipped by the distributions:

http://cgit.freedesktop.org/ModemManager/ModemManager/commit/?id=8450b7b2a39a6e1c9fda950dc3f821984c73c56b

Jef