Comment 3 for bug 1443766

I got this problem the first time I tried to upgrade to 15.200-0ubuntu0.1, but running

apt-get install -f

then worked OK. However, after rebooting, X came up in super low resolution. Checking the Xorg log file I found that it was reporting /etc/ati/amdpcsdb.default was missing.

I tried uninstalling the drivers and reinstalling them. Again, everything installed OK, but the same error occurred.

Checking /etc/ati I found it was empty.

I ran locate to see if there was an amdpcsdb.default file on the system, and found it in /usr/lib/fglrx/etc/ati

I removed the /etc/ati directory and did

sudo ln -s /usr/lib/fglrx/etc/ati /etc

After rebooting, everything worked OK.