secondary screen only works until login

[Colin Law]

On 29 August 2017 at 21:37, Dave Stevens <geek at uniserve.com> wrote:
> On Tue, 29 Aug 2017 21:09:59 +0100
> Colin Law <clanlaw at gmail.com> wrote:
>
>> >
>> > Yes always just look at xrandr I guess.
>> >
>> > xrandr is a tool you can use to make those changes.
>>
>> Note that for a second user the second display works correctly, so it
>> should not be necessary to do anything with xrandr, he needs to find
>> out what has got messed up for the original user.
>>
>> Dave, when logged in as the second user what does System Settings >
>> Displays say about the display?
>>
>> Colin
>
> Hi Colin,
>
> We're crossing emails I think. What I did after Xen's reply
> dwas man xrandr and one option was xrandr --auto. I ran that as an
> unprivileged user and the second screen immediately lit up. So at that
> point I oohed and aaahed and thanked Xen. The I saw your email and shut
> everything off and repowered the screen then the laptop. Now the
> default login comes up with the secondary screen working. I don't
> really understand why but I've got my second screen working.
>
> When I run System Settings > Displays I get
> various stuff. Can I post a screenshot on this list?

If it is all working now then don't worry. I just meant did it
recognise the display correctly. You previously suggested it said it
was unrecognised.

Colin