I had this same issue on Ubuntu 16.04 and I got it working finally.
I had to get from Nvidia the CUDA driver .run file ( the .run file contains the
32bit libs steam requires its a 2GB download)
https://developer.nvidia.com/cuda-downloads
disable nouveau (/etc/modprobe.d/blacklist.conf add blackli
I have these adapters
/* expect two bytes 0x56 0x00 */
r = ch341_control_in(dev, 0x95, 0x2518, 0, buffer, size);
if (r < 0)
goto out;
/*Comment this line out and recompile*/ //r = ch341_control_out(dev, 0x9a,
0x2518, 0x0050);
if (r < 0)
