Public bug reported:
I wish I could give you more details, but I don't have the faintest idea
what actually went wrong. Running Ubuntu 16.04, unity 7.4.0, I was
trying to figure out how to start a second X session and in the process
made the mistake of running startx as root. When I did this, it changed
the permissions of the .XAuthority in my home directory so that next
time I rebooted, I couldn't log in. In my state of panic, I deleted a
couple config files related to X and GNOME (I don't remember which ones)
before figuring out that .XAuthority was the problem.
Once I fixed .XAuthority's permissions, I could log in again, but now
HiDPI scaling is broken. GTK buttons etc still scale, but applications
like Google Chrome and Emacs don't scale. Other users on the same system
have no problem, so I presume that it is something in my home directory.
First, where are the settings that would affect whether HiDPI works?
Second, it seems like these are something Ubuntu should be protecting
(so if they get deleted by mistake, they are reconstituted correctly).
** Affects: unity (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1609489
Title:
HiDPI scaling broken for (only) one of my users; Ubuntu can't
automatically fix it
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