Actions
Forum Thread Details
  • State Verified Answer
  • Replies 5 replies
  • Subscribers 54 subscribers
  • Views 1205 views
  • Users 0 members are here
Related

BB VIEW 4.3": Debian desktop is a lonely cursor

Former Member

After two days of trying to follow obsolete and/or incomplete and/or ambiguous instructions on this and other forums, I managed to get the BB VIEW cape going with a 4.3" LCD. And by going, I mean that after the touch calibration, which completes uneventfully, I get a black screen with a lonely cursor. The cursor tracks smoothly and precisely, I am not getting poor touchscreen tracking that some have reported.

 

If I hit Crtl+Alt+Fx (0 < x < 7), I get a terminal with a login prompt, if I then hit Ctrl+Alt+F7, I recover the empty screen with a cursor.

 

Linux version is Wheezy, Linux beaglebone 3.8.13-bone79 #1 SMP Tue Oct 13 20:44:55 UTC 2015 armv7l GNU/Linux, hardware of BeagleBone Black is Rev. C.

 

So,

 

(a) have I done something wrong? or

 

(b) is this the expected behavior, the 4.3" screen is deemed by (parts of) Linux to be insufficient to display desktop constituents other than the cursor?

 

Many thanks!

 

Vladimir

Parents Reply Children
  • 0 in reply to Former Member

    We use BeagleBone with the attached cape and display for a rudimentary prototype of a user interface. Were hoping to get Android going, but it appears that there is no Android distribution available that would work with BB-View. So, the UI is running in Chromium browser.

     

    The UI is for a collection of other boards that do not have UI-capable processors on them. The connection from one of these boards to BeagleBone is over UART. A simple script running on BeagleBone receives data from UART and makes it available to BeagleBone's Apache web server, which then sends data to Chromium on the same board. In reverse, user button presses and configuration changes are sent by the browser to the server, processed, and corresponding commands are issued to the UI-less boards over UART. A bit complicated, but it works.

     

    This configuration is almost certainly not what we will use in the finished product, but is sufficient for a demo.