Hello linux-media. I use cx231xx driver with my August Vgb100 USB video grabber. It works great. It automatically detects my device and I can watch the video from analog camera on my Raspberry Pi, and I am very happy about how it works. But there is a catch. I want to connect 3 such cameras to my Raspberry Pi. When there are connected 2 of them, I can watch video from both of them without problems. When there are connected 3 adapters, I can watch the video from all three cameras, but the picture from one of them is flickering and blurring between blue screen and the correct data. And no matter in what order I connect them to the Raspberry, the problem exists always on the same adapter. The same problem exists when I connect the cameras to my laptop running Raspbian desktop. This could suggest that the one adapter is a little defective, but it works okay when there are connected only two adapters, or when it is the only connected. Also when I disconnect it and connect again to USB port, I can see correct image. But when I start to play picture from another camera, and then go back to the "defective" one, it flickers again. How can I find the reason of the problem? Best regards, Tomasz