Rp4 + pi camera v3 + official 7" touch screen ( camera issue) i2c conflict?

[6by9]

I've dropped back to a clean 64bit Raspberry Pi OS Desktop Bullseye image with all updates applied, and I'm wrong that the kernel has been bumped on Bullseye. It's still on the 20230405 package and 6.1.21.

However I can't reproduce any issues with a V3 camera and 7" DSI touch screen. I do have an HDMI screen connected on HDMI-0 as well, but that shouldn't make any difference to the way I2C is working.

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pi@bullseye64:~ $ sudo i2cdetect -y 10
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:                         -- -- -- -- UU -- -- -- 
10: -- -- -- -- -- -- -- -- -- -- UU -- -- -- -- -- 
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
30: -- -- -- -- -- -- -- -- UU -- -- -- -- -- -- -- 
40: -- -- -- -- -- UU -- -- -- -- -- -- -- -- -- -- 
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
60: -- -- -- -- 64 -- -- -- -- -- -- -- -- -- -- -- 
70: -- -- -- -- -- -- -- --                         

I've got "libcamera-hello -t 0" running in one window, and Chromium up in another with https://naqtn.github.io/WBBMTT to check out multitouch from the panel. All good (once I'd replaced a dodgy FFC from Pi to camera).

[Hooba97]

Thank you , I'll try to do a fresh install in a bit and let you know the results

[Hooba97]

I just did a fresh install twice

Fresh install Kernel version : camera problem is exists

New kernel version( rpi-update) : touch screen problem

I tried new cables as well

Ps : camera is v3 Noir

Edit : using sudo i2cdetect -y 10 returns the following

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Last login: Mon Sep 18 16:09:02 2023
iehab@raspberrypi:~ $ sudo i2cdetect -y 10
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:                         -- -- -- -- UU -- -- --
10: -- -- -- -- -- -- -- -- -- -- UU -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: 30 -- -- -- -- -- -- -- UU -- -- -- -- -- -- --
40: -- -- -- -- -- UU -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- 64 -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
iehab@raspberrypi:~ $

[aBUGSworstnightmare]

I just did a fresh install twice

Fresh install Kernel version : camera problem is exists

New kernel version( rpi-update) : touch screen problem

I tried new cables as well

Ps : camera is v3 Noir
..

then do it a third time please and only (!!!!) run below commands after you've booted your Pi for the first time:

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sudo apt-get update
sudo apt-get full-upgrade
sudo reboot

After the Pi has rebooted run below commands and report back

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libcamera-hello --list-cameras
libcamera-hello -t 0 --qt-preview

[Hooba97]

I did as you asked , still same problem

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iehab@raspberrypi:~ $ libcamera-hello --list-cameras
Available cameras
-----------------
0 : imx708_noir [4608x2592] (/base/soc/i2c0mux/i2c@1/imx708@1a)
    Modes: 'SRGGB10_CSI2P' : 1536x864 [120.13 fps - (768, 432)/3072x1728 crop]
                             2304x1296 [56.03 fps - (0, 0)/4608x2592 crop]
                             4608x2592 [14.35 fps - (0, 0)/4608x2592 crop]

iehab@raspberrypi:~ $ libcamera-hello -t 0 --qt-preview
Made QT preview window
[0:05:25.724281912] [2034]  INFO Camera camera_manager.cpp:297 libcamera v0.0.5+83-bde9b04f
[0:05:25.855980789] [2038]  INFO RPI vc4.cpp:437 Registered camera /base/soc/i2c0mux/i2c@1/imx708@1a to Unicam device /dev/media0 and ISP device /dev/media1
[0:05:25.856106825] [2038]  INFO RPI pipeline_base.cpp:1101 Using configuration file '/usr/share/libcamera/pipeline/rpi/vc4/rpi_apps.yaml'
[0:05:25.857055128] [2034]  INFO Camera camera.cpp:1033 configuring streams: (0) 2304x1296-YUV420
[0:05:25.857610696] [2038]  INFO RPI vc4.cpp:565 Sensor: /base/soc/i2c0mux/i2c@1/imx708@1a - Selected sensor format: 2304x1296-SBGGR10_1X10 - Selected unicam format: 2304x1296-pBAA
[0:05:34.073884353] [2038] ERROR V4L2 v4l2_device.cpp:353 'imx708_noir': Unable to set controls: Input/output error
[0:05:35.292240294] [2038] ERROR V4L2 v4l2_device.cpp:353 'imx708_noir': Unable to set controls: Input/output error
[0:05:40.838198532] [2038] ERROR V4L2 v4l2_device.cpp:353 'imx708_noir': Unable to set controls: Input/output error
[0:05:43.036112981] [2038] ERROR V4L2 v4l2_device.cpp:353 'imx708_noir': Unable to set controls: Input/output error
[0:05:47.568180703] [2038] ERROR V4L2 v4l2_device.cpp:353 'imx708_noir': Unable to set controls: Input/output error
[0:05:48.956117938] [2038] ERROR V4L2 v4l2_device.cpp:353 'imx708_noir': Unable to set controls: Input/output error
[0:05:54.684107451] [2038] ERROR V4L2 v4l2_device.cpp:353 'imx708_noir': Unable to set controls: Input/output error
iehab@raspberrypi:~ $ 

[aBUGSworstnightmare]

So your camera is detected but then libcamera fails

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[0:05:35.292240294] [2038] ERROR V4L2 v4l2_device.cpp:353 'imx708_noir': Unable to set controls: Input/output error

Does it fail with exactly the same message when DSI1 screen is disconnected?

As I don't own one of these cameras/official 7in displays, I'm not able to offer any further support.

[Hooba97]

Disconnecting the DSI screen solves the error
From what I understand , it has something to do with i2c conflict with the camera

[6by9]

Can I check that you are using the standard length cables for both camera and display, and using a reputable power supply?

With the standard Bullseye 64bit image I can't reproduce the issue. Please confirm whether you're using the 32bit or 64bit version of Raspberry Pi OS.

[Hooba97]

Yes I am using the cables included in the boxes , I even tried new cables, and using the official power supply as for the os I had 32bit when the issue started , now running on 64 bit with the same issue

Are you using the v3 noir version?

[Hooba97]

Any update how to solve the problem?

[rafael2k]

Same problem here. After a kernel update, the touch screen stopped working.

[ 8.914075] edt_ft5x06 10-0038: supply vcc not found, using dummy regulator
[ 8.914404] edt_ft5x06 10-0038: supply iovcc not found, using dummy regulator
[ 8.915006] edt_ft5x06 10-0038: touchscreen probe failed
[ 8.915382] edt_ft5x06: probe of 10-0038 failed with error -5

[rafael2k]

Fixed.
https://github.com/raspberrypi/linux/issues/5619