No Video Output: Solved for me!
#1
So I have an HP L2335 1920x1200 monitor with DVI, and used a DVI to HDMI cable. A Raspberry Pi works fine with it, but the Pine A64 will not. The screen pops in and out of power save mode.

I switched it to an old Coby TFTV4026 40" LCD TV monitor which provides known-bad EDID information, and it did very well with the Android image booting, but it overscans due to the bad EDID information.

Questions:

Does anyone want to help me debug why the L2335 fails?  Should I report a bug? What do you need to know?

Can you adjust the overscan region and resolution of the Android image?
  Reply
#2
(04-11-2016, 10:13 PM)remaker Wrote: So I have an HP L2335 1920x1200 monitor with DVI, and used a DVI to HDMI cable. A Raspberry Pi works fine with it, but the Pine A64 will not. The screen pops in and out of power save mode.

I switched it to an old Coby TFTV4026 40" LCD TV monitor which provides known-bad EDID information, and it did very well with the Android image booting, but it overscans due to the bad EDID information.

Questions:

Does anyone want to help me debug why the L2335 fails?  Should I report a bug? What do you need to know?

Can you adjust the overscan region and resolution of the Android image?

Supposedly, the overscan adjustment functions have been broken in the last two Android images, but it is something that will be being fixed for the next image. What is needed really, is some kind of resolution auto-detect/auto-adjust baked right into the image.
  Reply
#3
(04-11-2016, 11:49 PM)SkairkrohBule Wrote:
(04-11-2016, 10:13 PM)remaker Wrote: So I have an HP L2335 1920x1200 monitor with DVI, and used a DVI to HDMI cable. A Raspberry Pi works fine with it, but the Pine A64 will not. The screen pops in and out of power save mode.

I switched it to an old Coby TFTV4026 40" LCD TV monitor which provides known-bad EDID information, and it did very well with the Android image booting, but it overscans due to the bad EDID information.

Questions:

Does anyone want to help me debug why the L2335 fails?  Should I report a bug? What do you need to know?

Can you adjust the overscan region and resolution of the Android image?

Supposedly, the overscan adjustment functions have been broken in the last two Android images, but it is something that will be being fixed for the next image. What is needed really, is some kind of resolution auto-detect/auto-adjust baked right into the image.

Very sorry on taking so long to resolve the overscan concern. I have meet up with Android team today and we definitely need to release a solution within a week.
  Reply
#4
More data: Also fails on a DVI based Dell 2001FP. So a 4:3 and 16:10 ratio monitor failed me.

Is the output limited to 16:9 ratios (720p/1080p?)

Seems like the chip is not picking up EDID information from the monitor.

It works OK on my older COBY TFTV4028, but that has known bad EDID info which may be tripping up the board.

Anyway, looking forward to testing future images with more robust monitor detection and support.
  Reply


Possibly Related Threads...
Thread Author Replies Views Last Post
Thumbs Up (Solved) Enclosure Assembly odatkid 0 246 10-22-2017, 01:48 PM
Last Post: odatkid
  Network issues, possibly not booting? [Solved] Ryanteck 3 423 06-17-2017, 11:01 AM
Last Post: xalius
Photo Analog RGB output Doro 1 590 12-20-2016, 02:42 PM
Last Post: scanff
  SSH works, but no video SvdSinner 8 1,178 12-08-2016, 12:59 PM
Last Post: MarkHaysHarris777
Exclamation Pine64 2Gb not booting [SOLVED] negativ3 7 2,842 10-19-2016, 08:07 AM
Last Post: MarkHaysHarris777
  My personal discovery of no video upon first booting my Pine A64 AZ_Ron 3 917 08-17-2016, 02:10 PM
Last Post: efalsken
  HDMI Video Resolution patmolloy 11 5,641 07-27-2016, 10:37 PM
Last Post: jwouellette
  Video Tutorial To Create Bootable SD-Card pineadmin 12 7,243 07-17-2016, 03:48 AM
Last Post: Ghost
Sad just trying to play a youtube video galbez 6 1,057 07-11-2016, 02:21 AM
Last Post: koda
  DOA Board? "UNSUPPORTED VIDEO" phloog 21 3,047 07-02-2016, 02:37 AM
Last Post: MarkHaysHarris777

Forum Jump:


Users browsing this thread: 1 Guest(s)