Official 7" Touchscreen

dorfi

Hey guys,
My rpi with latest Emteria version installed doenst start with touchscreen, it always reboots after "Stating Kernel . . ."

I would appreciate any help

IKS

Hi dorfi, I can't reproduce your problem here. The latest release seems to work fine with my (official) touchscreen. Does it start with a HDMI monitor? Is anything else connected (e.g. USB)?

dorfi

Hey,
It works prefectly with HDMI.
Also doesnt start if there is nothing else than poweer supply connected.

That's how far I get
http://img.picshare.at/1509529149_20171101_102753_1_.jpg

Do I have to apply any changes to config.txt or boot.prop?

IKS

No, you don't have to change anything. But just for testing purposes: edit the build.prop and set "debug.drm.mode.auto" to 0.

dorfi

With debug.drm.mode.auto=0 i end up in black screen

IKS

This happens if something else was unintentionally changed (file permissions, line endings) too. Please do another test:

clean installation
if it does not work, mount the system partition on your pc and remove "/system/xbin/edid"

dorfi

reinstalled and delted "system/xbin/edid" but still same error:/

Also have just seen that it says "3 USB Device(s) found" even though none are connected

IKS

Those USB devices are internal, I have them too.
Could you please check if you have any logs in "/cache/logs" ? Depending on the version you have, it may be on the own partition (/cache) or on the data partition (/data/cache/).

dorfi

Booting with Touchscreen doesn't create any log files, only HDMI does
in /userdata/cache/logs

dorfi

Is it really supposed to work with this config.txt / boot.prop

hdmi_group=2
hdmi_drive=2
hdmi_mode=87
hdmi_cvt=1280 720 60 6 0 0 0
hdmi_force_hotplug=1
disable_overscan=1

dtoverlay=vc4-kms-v3d,cma-256
avoid_warnings=2

dtparam=audio=on
dtparam=i2c1=on
dtparam=i2c_arm=on

start_x=1
kernel=u-boot.bin

ro.build.id=NZH54D
ro.build.display.id=rpi3-userdebug 7.1.2 NZH54D eng.kalkov.20171025.083720
ro.build.version.incremental=eng.kalkov.20171025.083720
ro.build.version.sdk=25
ro.build.version.preview_sdk=0
ro.build.version.codename=REL
ro.build.version.all_codenames=REL
ro.build.version.release=7.1.2
ro.build.version.security_patch=2017-08-05
ro.build.version.base_os=
ro.build.date=Mi 25. Okt 08:37:20 CEST 2017
ro.build.date.utc=1508913440
ro.build.type=userdebug
ro.build.user=kalkov
ro.build.host=aachen
ro.build.tags=release-keys
ro.build.flavor=rpi3-userdebug
ro.product.model=Raspberry Pi 3
ro.product.brand=emteria
ro.product.name=rpi3
ro.product.device=rpi3
ro.product.board=

ro.product.cpu.abi=armeabi-v7a
ro.product.cpu.abi2=armeabi
ro.product.cpu.abilist=armeabi-v7a,armeabi
ro.product.cpu.abilist32=armeabi-v7a,armeabi
ro.product.cpu.abilist64=
ro.product.manufacturer=brcm
ro.product.locale=en-US
ro.wifi.channels=
ro.board.platform=bcm2710

ro.build.product=rpi3

ro.build.description=rpi3-userdebug 7.1.2 NZH54D eng.kalkov.20171025.083720 release-keys
ro.build.fingerprint=emteria/rpi3/rpi3:7.1.2/NZH54D/kalkov10250837:userdebug/release-keys
ro.build.characteristics=tablet,nosdcard,embedded

debug.drm.mode.auto=1
debug.drm.mode.force=1280x720
ro.config.low_ram=1
ro.hdmi.device_type=4
ro.opengles.version=131072
ro.radio.noril=1
ro.rfkilldisabled=1
ro.sf.lcd_density=213
wifi.interface=wlan0

ro.config.ringtone=Ring_Synth_04.ogg
ro.config.notification_sound=pixiedust.ogg
ro.carrier=unknown
ro.config.alarm_alert=Alarm_Classic.ogg
ro.release.branch=aosp-7.1
ro.release.target=rpi3
ro.release.version=0.4.1
ro.build.selinux=1
dalvik.vm.heapstartsize=5m
dalvik.vm.heapgrowthlimit=48m
dalvik.vm.heapsize=128m
dalvik.vm.heaptargetutilization=0.75
dalvik.vm.heapminfree=512k
dalvik.vm.heapmaxfree=2m
persist.sys.dalvik.vm.lib.2=libart.so
dalvik.vm.isa.arm.variant=cortex-a53
dalvik.vm.isa.arm.features=default
dalvik.vm.lockprof.threshold=500
net.bt.name=Android
dalvik.vm.stack-trace-file=/data/anr/traces.txt
ro.expect.recovery_id=0x474478f7acfe8cfe668b4b0e20bc7b80824bb9ba000000000000000000000000

Isn't "debug.drm.mode.force=1280x720" a problem for the 800x480 Touchscreen?

IKS

You can change it to 800x480, but it shouldn't be the cause of the boot issue.

dorfi

800x480 doesnt help either

dorfi

I'm using evaluation version btw

IKS

That makes no sense to me at all. Did you try another sdcard?

dorfi

I can try another SD card, but e.g. Raspian works fine with the exact same RPI/SDCard/Touchscreen

cpostier

I having same issue, just endless reboot loop. Stops right when the blue lines are making it graphic, then reboots.

cpostier

Ok, just found a fix for this, I was using the MacOS install program to create the SD card, I grabbed a win10 laptop, grabbed the installer, and created the SD card from the windows installer, and its booting now...

IKS

Thanks for sharing. If this is somehow related to the MacOS installer, we will take a closer look on it.

IKS

As we have mentioned in another thread, we have also found a bug in vc4 driver, which might cause the boot loop. It is fixed by now and the new version will be included into the next release.

dorfi

Hey, thanks for the great support but somehow I still have no success with the touchscreen

It still says "Starting kernerl ..." then blackscreen for like 0,1sec and then quickly turns white and reboots :neutral: