Occasional garbage on HDMI output.

This latest Ubilinux image seems to have occasional areas on the HDMI output where there is 'garbage', i.e. random video that is correctly refreshed when you move the mouse. (Although 1 time it required a reboot) This generally occurs after coming out of screensave mode. The reason I mention now is that I did not ever see it once with the previous image that I had been using for about 2-3 weeks. I'm currently running the Wed. July 6 build. Anyone else see this? or just me..
Comments
We're looking into this. In the meantime, could you please confirm the output you get for the following command:
Thanks for the report!
Version: 2:2.99.917+git20160522-1~bpo8+1
Note: I use the screensaver and monitor power down functions a lot because I have 4 computers connected to a 4-way KVM switch, the UP being one of them. On one screen I can SSH into UP, on another I see the actual UP HDMI output.
thanks