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by schmerlo
Tue Nov 13, 2018 11:10 am
Forum: General discussion
Topic: Multiple Frame buffer beta testers wanted
Replies: 372
Views: 57130

Re: Multiple Frame buffer beta testers wanted

If you have a correctly set up DPI device then even with the standard firmware, you will get a framebuffer accessing that device. If you want HDMI AS WELL, then you can use this custom firmware and you will get two framebuffers. Still not sure why the Zero firmware isn't working though. Yep my plan...
by schmerlo
Tue Nov 13, 2018 9:54 am
Forum: General discussion
Topic: Multiple Frame buffer beta testers wanted
Replies: 372
Views: 57130

Re: Multiple Frame buffer beta testers wanted

Just out of interest, why would you be trying multiple frame buffer code on a Zero? Are you using a DPI display? We are preparing two student projects using a Texas Instruments DMD and a Rpi Zero. One idea is to use the setup to build a structured light 3d scanner the other would be a near uv expos...
by schmerlo
Mon Nov 12, 2018 3:54 pm
Forum: General discussion
Topic: Multiple Frame buffer beta testers wanted
Replies: 372
Views: 57130

Re: Multiple Frame buffer beta testers wanted

Hmm. I pressume you are using the kernel.img linked above? Using a standard start.elf, this should still boot. When you then replace the start.elg with the multi frame buffer one, that is when it goes wrong? Yep exactly works fine if i use the original start_x.elf or specify start_x=0 in the config...
by schmerlo
Mon Nov 12, 2018 3:18 pm
Forum: General discussion
Topic: Multiple Frame buffer beta testers wanted
Replies: 372
Views: 57130

Re: Multiple Frame buffer beta testers wanted

Did a brief test with kernel7 - 4.14.79 - on a RPi 3B+ --> looks good so far. Only weird thing is the power supply icon in the task bar (as reported earlier alreday). Will test Zero version in the evening (as I don't have the miniHDMI cable with me) No success on my Zero even with gpu_mem=256 max_f...
by schmerlo
Fri Nov 09, 2018 3:53 pm
Forum: General discussion
Topic: Multiple Frame buffer beta testers wanted
Replies: 372
Views: 57130

Re: Multiple Frame buffer beta testers wanted

After the 'rpi-update 0018be6' you need to copy start_x and kernel to uSD card again (as rpi-update will replace them with the latest versions). If I have some time to spare I can check with a Pi Zero + HDMI screen on the weekend. Nevertheless, as you need to have memory for two framebuffers now, m...
by schmerlo
Fri Nov 09, 2018 9:21 am
Forum: General discussion
Topic: Multiple Frame buffer beta testers wanted
Replies: 372
Views: 57130

Re: Multiple Frame buffer beta testers wanted

delete (commend-out) commands mentioned below: framebuffer_width=854 framebuffer_height=480 display_default_lcd=0 hdmi_timings=854 0 14 4 12 480 0 2 3 9 0 0 0 60 0 32000000 3 this is no longer valid for DPI as we now have a dpi_timings command. As it now screws up your HDMI timing (thanks to jamesh...
by schmerlo
Thu Nov 08, 2018 5:11 pm
Forum: General discussion
Topic: Multiple Frame buffer beta testers wanted
Replies: 372
Views: 57130

Re: Multiple Frame buffer beta testers wanted

Can you please inform which displays you have connected to the zero and how (as I have no idea what DLP2000) is ... Your ' framebuffer_priority" should be HDMI ' framebuffer_priority=2" Start with 'max_framebuffers=1' to see if your setup/config/installation is working at all ... I already checked ...
by schmerlo
Thu Nov 08, 2018 1:44 pm
Forum: General discussion
Topic: Multiple Frame buffer beta testers wanted
Replies: 372
Views: 57130

Re: Multiple Frame buffer beta testers wanted

Can you please inform which displays you have connected to the zero and how (as I have no idea what DLP2000) is ... Your ' framebuffer_priority" should be HDMI ' framebuffer_priority=2" Start with 'max_framebuffers=1' to see if your setup/config/installation is working at all ... I already checked ...
by schmerlo
Thu Nov 08, 2018 10:40 am
Forum: General discussion
Topic: Multiple Frame buffer beta testers wanted
Replies: 372
Views: 57130

Re: Multiple Frame buffer beta testers wanted

Should the provided start_x.elf run on a raspberry pi zero? I tried it on my Zero + DLP2000 combo but it crashes right after powering up. Yes, you do need that. Please clarify 'crash'. Any visible signs like error messages? Can you try it on a Pi with more memory? The activity led is lit after powe...
by schmerlo
Wed Nov 07, 2018 10:44 am
Forum: General discussion
Topic: Multiple Frame buffer beta testers wanted
Replies: 372
Views: 57130

Re: Multiple Frame buffer beta testers wanted

Should the provided start_x.elf run on a raspberry pi zero? I tried it on my Zero + DLP2000 combo but it crashes right after powering up.

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