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by aBUGSworstnightmare
Fri Jul 19, 2019 11:33 am
Forum: Compute Module
Topic: RPI -CMIO board and SD card
Replies: 3
Views: 54

Re: RPI -CMIO board and SD card

Documentation of the Compute Module is here https://www.raspberrypi.org/documentation/hardware/computemodule/datasheets/rpi_DATA_CM3plus_1p0.pdf Have you set USB Boot jumper (J4) correctly (refer to schematic here https://www.raspberrypi.org/documentation/hardware/computemodule/schematics/rpi_SCH_CM...
by aBUGSworstnightmare
Thu Jul 18, 2019 3:06 pm
Forum: Troubleshooting
Topic: Screen rotation issues
Replies: 3
Views: 71

Re: Screen rotation issues

What happens when you rotate it with the screen configuration utility?
by aBUGSworstnightmare
Thu Jul 18, 2019 1:46 pm
Forum: Compute Module
Topic: CM3 DPI connection
Replies: 8
Views: 576

Re: CM3 DPI connection

Porte wrote: Hi,

Problem solved. Thank you.

Umit
and how???
by aBUGSworstnightmare
Thu Jul 18, 2019 1:43 pm
Forum: Device Tree
Topic: DPI displays - dpi24 overlay fails on RPi4
Replies: 18
Views: 541

Re: DPI displays - dpi24 overlay fails on RPi4

PhilE wrote:
Thu Jul 18, 2019 1:00 pm
That's a different problem. Can you open an issue in the Firmware repo?
Done
by aBUGSworstnightmare
Thu Jul 18, 2019 11:26 am
Forum: Device Tree
Topic: DPI displays - dpi24 overlay fails on RPi4
Replies: 18
Views: 541

New dpi24.dtbo - Raspberry Pi4

Tested on Raspberry Pi4 as well. Works, but image is diplayed incorrectly (yellow dots in the background image). Same uSD card/settings as used on the Rpi3/Zero.
IMG_1016.jpg
working on a RPi4, but not correctly (different GPIO timing on Rpi4 compared to Rpi3?)
IMG_1016.jpg (125.27 KiB) Viewed 145 times
IMG_1017.jpg
incorrect . look at yellow dots in the Rpi4 desktop background and compare to RPi3 and Zero (which display the image correct)
IMG_1017.jpg (85.48 KiB) Viewed 145 times
by aBUGSworstnightmare
Thu Jul 18, 2019 11:23 am
Forum: Device Tree
Topic: DPI displays - dpi24 overlay fails on RPi4
Replies: 18
Views: 541

New dpi24.dtbo - Raspberry 3

works fine on Raspberry Pi3
IMG_1019.jpg
Desktop background image is displayed correctly
IMG_1019.jpg (82.36 KiB) Viewed 147 times
IMG_1018.jpg
dpi24.dtbo - test on Raspberry 3
IMG_1018.jpg (98.02 KiB) Viewed 147 times
by aBUGSworstnightmare
Thu Jul 18, 2019 11:21 am
Forum: Device Tree
Topic: DPI displays - dpi24 overlay fails on RPi4
Replies: 18
Views: 541

New dpi24.dtbo - Raspberry Zero

works fine on Raspberry Zero
IMG_1015.jpg
dpi24.dtbo - test on Rpi Zero WH
IMG_1015.jpg (108.47 KiB) Viewed 148 times
by aBUGSworstnightmare
Wed Jul 17, 2019 10:12 am
Forum: General discussion
Topic: Pi4 - custom dual display configuration
Replies: 34
Views: 1019

Re: Pi4 - custom dual display configuration

I'm assuming you mean Rpi3 with legacy drivers (I'm also running on a RPi3). That would have been using Xinerama and have had no hardware acceleration using the 3D hardware. Xinerama also has to do a load of extra work as objects get dragged between the two windows. If you wish to use legacy mode t...
by aBUGSworstnightmare
Wed Jul 17, 2019 9:18 am
Forum: General discussion
Topic: Pi4 - custom dual display configuration
Replies: 34
Views: 1019

Re: Pi4 - custom dual display configuration

On the RPI3 I could operate two WXGA (1280*800) side by side. I'm assuming you mean Rpi3 with legacy drivers (I'm also running on a RPi3). That would have been using Xinerama and have had no hardware acceleration using the 3D hardware. Xinerama also has to do a load of extra work as objects get dra...
by aBUGSworstnightmare
Tue Jul 16, 2019 7:28 pm
Forum: Official Foundation Display
Topic: Screen for Raspberry Pi
Replies: 6
Views: 318

Re: Screen for Raspberry Pi

Ahhhh thank you guys! I'm sorry I was refering to the display one (not the HDMI one). So, if I were to remove the lcd screen from an iPad (for example), could I connect it to the rapsberry changing the boot file as you said? And that could work with any lcd screen? there is no simple way for connec...
by aBUGSworstnightmare
Tue Jul 16, 2019 7:16 pm
Forum: General discussion
Topic: Pi4 - custom dual display configuration
Replies: 34
Views: 1019

Re: Pi4 - custom dual display configuration

Thanks for letting us know!

On the RPI3 I could operate two WXGA (1280*800) side by side.
Will test updated DPI24 overlay tomorrow (no time for doing it today).
by aBUGSworstnightmare
Tue Jul 16, 2019 2:47 pm
Forum: HATs and other add-ons
Topic: Cellular PI hat T-Mobile
Replies: 1
Views: 93

Re: Cellular PI hat T-Mobile

https://www.waveshare.com/gsm-gprs-gnss-hat.htm
or
https://www.waveshare.com/sim7000e-nb-iot-hat.htm

Check the mobile band to see if it's available in your part of the world.
by aBUGSworstnightmare
Tue Jul 16, 2019 2:13 pm
Forum: General discussion
Topic: just a thought... universal laptop style interface for Rpi
Replies: 6
Views: 231

Re: just a thought... universal laptop style interface for Rpi

Done alreday https://www.raspberrypi.org/forums/view ... d#p1361021

PCB size is 10x10cm; can even drive a second display if you have Bank0 GPIO free
by aBUGSworstnightmare
Tue Jul 16, 2019 12:03 pm
Forum: Device Tree
Topic: DPI displays - dpi24 overlay fails on RPi4
Replies: 18
Views: 541

Re: DPI displays - dpi24 overlay fails on RPi4

Will have to test later. Will answer here.
by aBUGSworstnightmare
Tue Jul 16, 2019 11:45 am
Forum: Device Tree
Topic: DPI displays - dpi24 overlay fails on RPi4
Replies: 18
Views: 541

Re: DPI displays - dpi24 overlay fails on RPi4

IMG_1007.JPG
trying dual display on a RPi3 fails
IMG_1007.JPG (95.84 KiB) Viewed 324 times
by aBUGSworstnightmare
Tue Jul 16, 2019 11:44 am
Forum: Device Tree
Topic: DPI displays - dpi24 overlay fails on RPi4
Replies: 18
Views: 541

Re: DPI displays - dpi24 overlay fails on RPi4

PhilE wrote:
Tue Jul 16, 2019 11:36 am
Read my post above.
Sorry PhilE, but when I made my post yours wasn't there! althought the timestamp says something different!

I will try it, but please let me know when the overlay was updated!
by aBUGSworstnightmare
Tue Jul 16, 2019 11:43 am
Forum: Device Tree
Topic: DPI displays - dpi24 overlay fails on RPi4
Replies: 18
Views: 541

Re: DPI displays - dpi24 overlay fails on RPi4

With the DPI interface configured I continued with the RPi4 testing but - as reported alreday on 1st July the displayed image is incorrect (look at the yellow dots in the background image). IMG_1011.JPG IMG_1012.JPG Now moving the uSD card to an RPI3 with the new driver enable ('dtoverlay=vc4-fkms-v...
by aBUGSworstnightmare
Tue Jul 16, 2019 11:30 am
Forum: Device Tree
Topic: DPI displays - dpi24 overlay fails on RPi4
Replies: 18
Views: 541

Re: DPI displays - dpi24 overlay fails on RPi4

PhilE wrote:And with the updated overlay?
Which updated overlay? I've downloaded Raspbian 2019-07-10 today and tested with it. I did not make any update/upgrade of the OS.

So, please let me know when the overlay was updated.
by aBUGSworstnightmare
Tue Jul 16, 2019 10:53 am
Forum: Device Tree
Topic: DPI displays - dpi24 overlay fails on RPi4
Replies: 18
Views: 541

Re: DPI displays - dpi24 overlay fails on RPi4

o.k. restarted testing today on this topic I've used a Manga screen 2 HDMI monitor (EDID.dat file attached to the post) and a Adafruit Kippah 5in WVGA display (connected to DPI). I've started with below config.txt on a RPi3 # Enable audio (loads snd_bcm2835) dtparam=audio=on disable_overscan=1 hdmi_...
by aBUGSworstnightmare
Tue Jul 16, 2019 7:42 am
Forum: General discussion
Topic: I didn't think the usb c power thing was a big deal...
Replies: 92
Views: 4005

Re: I didn't think the usb c power thing was a big deal...

Wouldn't call it a 'minor issue' if users have to pay nearly the same amount for a cable as for the official PSU... I would. Seriously, what's with all the whiners on the Pi4? :cry: :cry: :cry: When people had trouble powering the Pi3 with phone chargers and we suggested buying the official PSU, mo...
by aBUGSworstnightmare
Tue Jul 16, 2019 5:05 am
Forum: General discussion
Topic: I didn't think the usb c power thing was a big deal...
Replies: 92
Views: 4005

Re: I didn't think the usb c power thing was a big deal...

Here's an independent site talking about the USB_C issue, and how much of a problem it isn't. https://www.tomshardware.com/news/raspberry-pi-4-usb-c-cables-that-work,39869.html Cheapest 'known working' cable from that link is USD6.90 --> the cost of a 1GB Pi4 is no longer USD35, it's now starting f...
by aBUGSworstnightmare
Mon Jul 15, 2019 6:56 pm
Forum: General discussion
Topic: Pi4 - custom dual display configuration
Replies: 34
Views: 1019

Re: Pi4 - custom dual display configuration

I know how to deal with custom timings and how to create EDID data, so I'm fine with both. I also have a EDID EEPROM on my board, but why should I bother myself with programming it if uisng the file fails to configure the driver correctly. Custom hdmi timings is what is documented here, there is not...
by aBUGSworstnightmare
Mon Jul 15, 2019 6:42 pm
Forum: General discussion
Topic: I didn't think the usb c power thing was a big deal...
Replies: 92
Views: 4005

Re: I didn't think the usb c power thing was a big deal...

The Wimbledon Centre Court coverage has been 2160p50 all tournament - some people might quite like to watch that on their Pi4B! Really? Did they succeed? I am not an expert, but that surely occurred on Pay-TV, didn't it? So the RPi should be able to decode# PayTV and render the broadcast@4K/60FPS.....
by aBUGSworstnightmare
Mon Jul 15, 2019 4:55 pm
Forum: General discussion
Topic: Pi4 - custom dual display configuration
Replies: 34
Views: 1019

Re: Pi4 - custom dual display configuration

So, I would say the pottation of dual framebuffer support with legacy driver is incomplete! when I look at nano /usr/share/X11/xorg.conf.d/99-fbturbo.conf I only see below, but not what we've used in the testing (https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=216399&start=325#p1416171) # Th...
by aBUGSworstnightmare
Mon Jul 15, 2019 4:32 pm
Forum: General discussion
Topic: Pi4 - custom dual display configuration
Replies: 34
Views: 1019

Re: Pi4 - custom dual display configuration

All the work done by James to expose multiple /dev/fbN nodes is merged and should be working. (By the sounds of it it is, as you can cat /dev/urandom to the framebuffer). Yes, two frame buffers are generated - I've never denied that (refer to my post above; there you can see display #0 and #2 are c...

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