Hi expert.
I'm trying to build android following AOSP guide and push it to my device, nexus 5.
Cuz I need Lollipop 5.1.1 so, I've build it with lunch aosp_hammerhead-userdebug configuration.
But after finish build, and i try "fastboot flushall -w" on bootloader boot..
it seems writing is done correctly -- at least whe i see the log.
However after finishing write, and reboot the device. it hangs on Google log, and it dosen't process anymore...
I don't know why this happen although i follow AOSP guide.
Please give your precious tip..
Thank you.
In general, GPU drivers are closed source and supplied by vendors because GPU technology is a highly litigious area. GPU vendors tend to keep their trade secrets close and avoid patent and legal exposure by releasing their drivers as binary blobs. Binary blobs in the AOSP "external" or vendor trees can be problematic in terms of version and change-log information.
First make sure you're actually getting the Adreno (Qualcomm GPU) OpenGLES driver "libEGL_adreno.so" in your AOSP tree build tree. Then, check to make sure it is in the system image you're flashing. If it is there and not loading, check the AOSP version/label you are using to see if others are having issues. You may have to use an older, stable version or modify the configuration files to load the proper driver but I haven't don't any research in your specific case. I hope this helps a bit. Please, let us know what you find.