yes, the video argument in /boot/uEnv.txt https://elinux.org/Beagleboard:BeagleBoneBlack_HDMI
> On Jun 1, 2020, at 5:41 AM, Pierre Ingels <[email protected]> wrote: > > > Making progress - although in a curve :) > > To try and problemsolve I connected a Raspberry Pi to the problematic monitor > - intiially it had the same issue (black screen after boot) and here I > managed to solve it by forcing hdmi_group=2 and hdmi_mode=27 in config.txt... > (https://www.raspberrypi.org/documentation/configuration/config-txt/video.md) > So it clearly seems to be that the monitor demands a non-standard resolution > (1280x800 @60Hz) and the system does not seem to jump to it automatically. > > Back to the BeageBone though, I feel a bit lost: the file structure is > different and there doesn't seem to be a config.txt that forces common > environment variables? > Is there any equivalent, or a way to force the resolution on HDMI to be > 1280x800? > > Thanks! > Pierre > >> On Tuesday, 5 May 2020 12:46:20 UTC+5:30, Pierre Ingels wrote: >> Thanks Jeff for the tip! I just installed lxde and ensured that it is >> enabled but am getting the same black screen with cursor visible. >> >> I'll have to look probably more in the configs as there seems to be >> something inhibiting the drawing of the interface. >> >> Pierre >> >>> On Monday, 4 May 2020 21:38:20 UTC+5:30, Jeff Pollard wrote: >>> Hi, >>> >>> Some versions of MachineKit do not come with the desktop environment >>> installed. I'm not sure if that is the problem you are encountering, but I >>> had a similar problem before. I installed lxde as a desktop (remotely) >>> then rebooted, and I got a desktop display after logging in. >>> >>> Jeff >>> >>> >>>> On Sunday, May 3, 2020 at 5:07:38 AM UTC-7, Pierre Ingels wrote: >>>> Hello all, >>>> >>>> I am attempting to set up a controller for my CNC lathe using the >>>> BeagleBone Black and Machinekit. I have set it up pretty well using remote >>>> terminal and I am now completing the system with a touchscreen (an Elecrow >>>> RR101 10.1 Inch 1280x800). >>>> >>>> It seems to work just fine and displaying the login graphical interface at >>>> 1280x800, but as soon as I login the mouse cursor remains but the screen >>>> is all dark. I have poked around with Xrandr thinking that it is the >>>> resolution but I get this message: >>>> xrandr: Failed to get size of gamma for output default >>>> Screen 0: minimum 1280 x 800, current 1280 x 800, maximum 1280 x 800 >>>> default connected 1280x800+0+0 0mm x 0mm >>>> 1280x800 0.00* >>>> >>>> >>>> I assume that I have to define the screen - any pointers how to do this >>>> and find the relevant parameters? Or obviously if I need to look in a very >>>> different direction :) >>>> >>>> Thank you! >>>> Pierre > > -- > website: http://www.machinekit.io blog: http://blog.machinekit.io github: > https://github.com/machinekit > --- > You received this message because you are subscribed to the Google Groups > "Machinekit" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/machinekit/1c8e340e-3f0a-415c-8f33-2d1c1b30b82b%40googlegroups.com. -- website: http://www.machinekit.io blog: http://blog.machinekit.io github: https://github.com/machinekit --- You received this message because you are subscribed to the Google Groups "Machinekit" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/machinekit/BD6321EC-5592-47C2-B1FA-646616222A9F%40gmail.com.
