I am experiencing an issue and not sure where to go from here to resolve the problem.
I have purchased a Kuman 3,5" TFT screen for my Pi, installed it using the drivers and scripts from https://github.com/goodtft/LCD-show.git. So far so good, the display works! I have used the 2017-04-10-raspbian-jessie.img without using updating and upgrading.
The problem occurs after I use:
sudo apt-get update
sudo apt-get upgrade
Once rebooted the Display just turns white, does not show the startup output any longer and does not display the desktop. Looking at the Xorg.0.log file seems to indicate that the Display can no longer be found. I have double checked that all configuration settings made to enable to display are still there. Even tried to re-run the installation scripts, however this does not solve the issue.
[ 9.406] (EE) open /dev/fb1: No such file or directory
[ 9.406] (EE) No devices detected.
[ 9.406] (EE)
Fatal server error:
[ 9.406] (EE) no screens found(EE)
Quickly looking at the file/directory seems to confirm this:
ls -lah /dev/fb1
ls: cannot access /dev/fb1: No such file or directory
When looking at dmesg output I did notice:
[ 3.762397] spi_master spi0: spi_device register error /soc/spi@7e204000/tft35a-ts@1
[ 3.762410] spi_master spi0: Failed to create SPI device for /soc/spi@7e204000/tft35a-ts@1
This I have not seen before.
It would be highly appreciated if anyone could push me in the right direction to solve this problem. I have tried googling, but cannot find anything that helps or I can understand. :(
=============== Update 2-4-2017
After some further Googling I stumbled upon the Kuman website with the Display in question (hxxp://kumantech.com/kuman-35-inch-tft-lcd-display-480x320-rgb-pixels-touch-screen-monitor-for-raspberry-pi-3-2-model-b-b-a-a-module-spi-interface-with-touch-pen-sc06_p0014.html). They seem to have a support section for the display with a link to the "latest" drivers. IT is a link to a mega.nz file share, https://mega.nz/#F!HUFQFDwL!fhM7RPrhbMJLsZ7ISLEr0A!2JNQAaII. These drivers however also do not fix the issue.
I contacted their support to see if they could either supply the drivers for the new kernels or give some indication on how to get them to work. their response consisted of a single line: "Sorry, we do not have that.". I am therefore unsure if any additional help to solve this issue can be expected from their side.
I guess it would be better to return the display under warranty and try find one which would be supported (adafruit maybe?).
Ps. Sorry about the links being mangled it seems i do not have enough reputation to post more than 2 links :)