MarkusDolze This section talks about using LCDproc with the Futaba / Targa USB Graphic Vacuum Fluorescent Display (MDM166A; USB VID=0x19c2, PID=0x6a11). The MDM166A is a graphical VFD with a 96x16 pixel dot matrix area which is used for 16x2 characters with a 6x8 pixel font. It features several icons, volume level and WLAN strength indicator which are all software controllable using the output function. The mdm166a driver builds on top of libhid which in turn uses libusb. The driver was developed by Christoph Rasim () without any available documentation from the vendor, but with a good protocol description from Thomas Koos () created by reverse engineering the protocol. Clock = TYPE Show self-running clock after LCDd shutdown. Possible values for TYPE are no, small and big. If not given no clock is shown. Dimming = ¶meters.yesnodef; Dim display, no dimming gives full brightness. OffDimming = ¶meters.yesnodef; Dim display in case LCDd is inactive. The icons, the volume bar and the WLAN indicator supported by the VFD can be controlled by use of the output function. The on parameter is used as a bitmask to control which elements to display. Setting an icon bit to 1 enables the icon, setting the bit to 0 disables an icon. Volume and WLAN strength indicator accept an numeric value in the given bit mask. bit(s) Icon 0 Play 1 Pause 2 Record 3 Message 4 Mail (at-symbol) 5 Mute 6 WLAN tower 7 Volume (the word) 8…12 Volume (decimal 0…28) 13…14 WLAN strength (0…3) This display may appear as a HID device in your system which may prevent libhid from being able to open the USB device. In this case you have to create some OS-specific configuration to prevent the HID driver to take control of this display. To make the uhid driver ignore this device you have to apply the following patch to your kernel source and recompile and install your kernel: