In the meantime, you may simply have to use a different HDMI port for your TV-watching needs if this issue is bothering you.
![nvidia shield controller keeps flashing nvidia shield controller keeps flashing](https://i.ytimg.com/vi/WnSAGO6WSRk/maxresdefault.jpg)
We’ll be reaching out to NVIDIA to see if they have any ETAs to offer up. Many have already contacted NVIDIA, and the company has a record of the bug and will likely be working to fix this one. By the way, Ethernet Shield is more expensive than the ARDUINO controller itself, so I had to buy a new Arduino, and leave the old version for other. Thankfully a solution shouldn’t be far off. A few users have reported that updating Backdrops to the latest version on the NVIDIA Shield 2017 has resulted in the screen saver flashing white before going into the screen saver mode. One user who contacted Vizio support suggested the problem lies with the SHIELD TV in that its refresh rate goes a bit faster than 60hz, something that makes the TV behave unexpectedly.
NVIDIA SHIELD CONTROLLER KEEPS FLASHING 1080P
The issue only seems to affect Vizio’s 4K M-series TVs such as the M43-C1, and specifically in the 4K 60hz HDMI ports, as some have reported that the issue doesn’t happen when the Android TV unit is plugged into a 1080p port.
![nvidia shield controller keeps flashing nvidia shield controller keeps flashing](https://images.anandtech.com/doci/7190/Shield-9729.jpg)
The issue is that the TV will periodically flicker very quickly as if the HDMI cable is being removed and reinserted. Don’t look now, but there’s a nasty bug with the NVIDIA Shield Android TV that’s ruining the viewing experiences of many-a Vizio owner.