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maurossi / linux

android-x86 kernels
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Kernel 4.12 restart during boot #9

Closed emelcher closed 6 years ago

emelcher commented 6 years ago

First I compiled with standard kernel using these commands:

mkdir android-x86 cd android-x86 repo init -u http://scm.osdn.net/gitroot/android-x86/manifest -b marshmallow-x86 repo sync --no-tags --no-clone-bundle export PATH=/usr/java/jdk1.7.0_80/bin:$PATH . build/envsetup.sh lunch android_x86_64-user m -j6 iso_img

Boot on my Positivo ZX3020 (CPU Z3735G) o.k., but no touch screen. Linux (CentOS) with kernel 4.12 has touch screen working on this tablet. I did new compilation inserting the commands

cd kernel git remote add maurossi https://github.com/maurossi/linux git fetch maurossi kernel-4.12 git checkout FETCH_HEAD cd ..

after repo sync.

Booting in debug mode, the tablet restart after second exit. Only a few lines appear and the screen becomes black immediately so I am unable to read anything.

Am I doing the compilation the right way? How can I get detailed debugging log?

emelcher commented 6 years ago

The line feeds of the command sequence got lost, here they are again:

`mkdir android-x86

cd android-x86 export PATH=/usr/java/jdk1.7.0_80/bin:$PATH repo init -u http://scm.osdn.net/gitroot/android-x86/manifest -b marshmallow-x86 repo sync --no-tags --no-clone-bundle cd kernel git remote add maurossi https://github.com/maurossi/linux git fetch maurossi kernel-4.12 git checkout FETCH_HEAD cd .. . build/envsetup.sh lunch android_x86_64-user m -j4 iso_img `

maurossi commented 6 years ago

Hi, I'm having similar problem with kernel-4.13 and kernel-4.14rc(s) with oreo-x86 (where in principle swiftshader should allow booting for any non drm HW accelerated like VESA boot option), but during kernel release cycles I remember I could boot nougat with kernel-4.12 and kernel-4.13

I tried several times to submit dmesg commands without success, I need to try to use serial console with Null modem cable to see if I can get message output

I my case reboot happened with all GPUs and also in normal boot (not associated to DEBUG). Mauro

emelcher commented 6 years ago

LineageOS compiled with kernel 4.15 resolves this issue.

... repo init -u git://git.osdn.net/gitroot/android-x86/manifest -b nougat-x86 -m cm.xml ... git fetch maurossi kernel-4.15 ...

Touch screen is working now. More details see http://lad.dsc.ufcg.edu.br/lad/pmwiki.php?n=Lad.Tablet