Comment 5 for bug 1607684

So, your symptoms are unfortunately perfectly explained by wiping with
format & download. You will have lost your S/N, MAC addresses, and some key
material the HDMI software expects to find (but does not use).

When your MAC addresses are wiped, the system will generate fresh ones
every boot, which explains why the wifi association is forgotten &
recreated. There are other ways the system can forget wifi (which are
bugs), but losing the hard coded MAC addresses does explain this one.

You are correct to observe that there are other bugs (both for wifi and
HDMI interoperability).

On 30 July 2016 at 00:48, Samuel Walladge <email address hidden> wrote:

> Also, probably related, I just discovered through an irc conversation on
> #ubuntu-touch (thanks Mister_Q) that using the bq flash tool (which I did
> to fix an unbootable
> system) and selecting 'format and download' (which I also did), would have
> deleted the imei partition.
>
> Quite possible, seeing as the serial number displayed in the 'about'
> section
> shows "0123456789ABCDEF".
>
> Apparently it could also cause my other problem of the tablet not
> recognizing
> or outputting to HDMI monitors via a micro-hdmi to hdmi cable.
>
> Although... that doesn't explain why the wifi problem has been seen
> before, or
> why there's plenty of other reports of the M10 not outputting to displays
> (at
> least not reliably). - see
>
> http://askubuntu.com/questions/762148/bq-m10-ubuntu-touch-micro-hdmi-not-outputting-to-tv
> for example.
>
> --
> You received this bug notification because you are a bug assignee.
> https://bugs.launchpad.net/bugs/1607684
>
> Title:
> wifi networks not remembered correctly (ubuntu touch, bq M10)
>
> Status in Canonical System Image:
> Incomplete
> Status in network-manager package in Ubuntu:
> New
>
> Bug description:
> I have a M10, on ubuntu touch OTA-12 (and same issue previously on
> OTA-11).
>
> The issue is that it doesn't remember wifi networks properly. To
> explain:
>
> 1. turn on tablet
> 2. select my wifi network from the list
> 3. enter password and click connect
> 4. reboot device
> 5. select my wifi network from the list
> 6. enter password and click connect
> .
> .
> .
> 30. go to wifi settings -> previous networks
> 31. view long list that looks like:
>
> MyWifinetwork1
> MyWifinetwork2
> MyWifinetwork3
> MyWifinetwork4
> ...
>
> What it should do (and did some time ago), is see that MyWifinetwork
> was saved in previous networks and automatically connect using the
> saved password/settings.
>
> So, I'm wondering is this a bug, something badly configured in my wifi
> network (although other devices remember it fine), or something else?
>
> Thanks.
>
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>
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>