more multiscreen wierdness

[Neal Becker]

Ed Greshko wrote:

> On 08/21/15 19:05, Neal Becker wrote:
>> At work I have laptop + external (hdmi) screen.
>>
>> Yesterday I went home, woke laptop from sleep, and had no panel. 
>> Previously panel always went with 'primary' display, which was laptop
>> with no external
>> monitor, and external when connected.  Which worked fine.
>>
>> I tried logoff/logon, then reboot.  Didn't fix it.
>>
>> So I re-added panel, carefully setup as I wanted.
>>
>> Today I connected external monitor.  Now each display has it's own panel.
>>
> 
> This happened to me one time a while back.  What I found was that in
> "System Settings--->Hardware--->Display and Monitor--->Display
> Configuration" somehow one monitor was squarely on top of the other one. 
> I just moved it to the "proper" configuration and everything was OK. 
> Never found out what caused it and it hasn't happened again.
> 
> 

Well they're not on top of each other, and the external is set to primary, 
and I have a panel on each display.