Possible graphics or monitor problem?

[gold_finger]

Note lines I've highlighted in red from your output below.

kim@kim-DIM2100:~$ lsblk
NAME  MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sda      8:0    0  37.3G  0 disk
├─sda1  8:1    0  14.7G  0 part
├─sda2  8:2    0    1K  0 part
├─sda5  8:5    0    1G  0 part [SWAP]
├─sda6  8:6    0  13.8G  0 part
└─sda7  8:7    0  7.8G  0 part /
sr0    11:0    1  1024M  0 rom 
kim@kim-DIM2100:~$ cat /etc/fstab
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>  <type>  <options>      <dump>  <pass>
# / was on /dev/sda7 during installation
UUID=94217e69-9f06-42f0-8cc3-d184d834ec33 /              ext4    errors=remount-ro 0      1
# swap was on /dev/sda5 during installation
UUID=1d6147c7-d3f9-497c-ae68-bc5c14f8983f none            swap    sw              0      0
/dev/fd0        /media/floppy0  auto    rw,user,noauto,exec,utf8 0      0
kim@kim-DIM2100:~$

Both lsblk and fstab output confirm that you are only using a root partition currently and it's sda7.  Fstab file does not show the a separate /home partition listed to be auto-mounted on boot.  So, you've got your /home within same partition as root and are not using sda6 at all right now.  That has nothing to do with your Xorg problem, but you might want to reinstall again to fix that.  When you select the "Something else" install option you need to set the mount points for both root and home partitions.  You must have just forgotten to set it for /home last time.

Thanks for posting the bug link.  I and others will take a look at it and hopefully an come up with an idea around the problem.  Worst case scenario, you might need to run LL version 1.06 (which is supported through April, 2017).  I'll be busy for a few hours so won't be able to post back until later tonight.  If someone else comes up with an idea, go ahead and try it.

P.s.  If you were using a separate /home partition, then the lsblk output would show "/home" in the MOUNTPOINT column next to one of the partitions.  It doesn't.