Third Monitor issues, lose display settings on reboot

[daviddavid]

I recently installed a third monitor and it was working fine.  I noticed though that every time I restarted my computer, I would have to fiddle with the display settings in order for it to work.  I would have to disable/re-enable the monitor, move the 3 around so that they were in the right order or some other things too in order for it to be the way I wanted it.  Those settings would never stick and finally now the last few times I started my desktop, I can't get anything to display on the third monitor.  The third monitor has always been labeled as a "digital display" and not the actual name.  But, when I got it working, it worked great.

I'm really not sure what's going on or why it works sometimes but not all the time.  I used to have linux mint and it worked fine with that. 

Here are some more details...

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dave@dave-desktop:~$ sudo lshw -C display
[sudo] password for dave:
  *-display               
       description: VGA compatible controller
       product: Cedar [Radeon HD 5000/6000/7350/8350 Series]
       vendor: Advanced Micro Devices, Inc. [AMD/ATI]
       physical id: 0
       bus info: pci@0000:01:00.0
       version: 00
       width: 64 bits
       clock: 33MHz
       capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
       configuration: driver=radeon latency=0
       resources: irq:27 memory:d0000000-dfffffff memory:fe9e0000-fe9fffff ioport:d000(size=256) memory:fe9c0000-fe9dffff


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dave@dave-desktop:~$ inxi
CPU~Quad core AMD Phenom II X4 955 (-MCP-) speed/max~800/3200 MHz Kernel~4.4.0-103-generic x86_64 Up~9 min Mem~923.4/3951.6MB HDD~250.1GB(18.2% used) Procs~199 Client~Shell inxi~2.2.35 

Anyone have any ideas?

Thanks