Hi,
I have downloaded kernel sources from HTC for wildfire and compiled zImage. using unpack and repack scripts I successfully installed the boot.img via update.zip. Now I see the device reboots fine, but I cannot unlock the screen, and none of the keys are functional.
I have no Idea what is still missing or have I done something wrong?? your help is need here.
Indeed I tried to compile jacobs kernel image from github but no luck.
Regards
bram
Has anyone else made any serious attempts at compiling a kernel? Prompted by doctorow's thread about the wakelock issue, I got interested in compiling a kernel so it could actually be fixed. For anyone who's tried at all, there are obviously some missing files in Lenovo's release.
I tried copying over the missing files from ASUS's Zenfone kernel release (since it uses the same SoC and their kernel had all the files that make was complaining about). Between that and commenting out some references to a nonexistent tablet_config.h header, it managed to at least finish compiling. Unfortunately I don't have a bootloader-unlocked device to test on yet, so I'm not terribly confident that it actually works.
P.S.: I'm not really sure if this belongs in the dev section or not? Sorry if it's in the wrong place, but I can't start threads there anyway at my current post count.
iampanis said:
I tried copying over the missing files from ASUS's Zenfone kernel release (since it uses the same SoC and their kernel had all the files that make was complaining about). Between that and commenting out some references to a nonexistent tablet_config.h header, it managed to at least finish compiling. Unfortunately I don't have a bootloader-unlocked device to test on yet, so I'm not terribly confident that it actually works.
Click to expand...
Click to collapse
Interesting, I haven't even gotten that far when I tried to compile them. The sources are most likely not up to date or even representative of the actual firmware kernel. For example, when I looked at the battery driver, I noticed in the published sources, the polling interval was hard-coded in such a way that it would completely ignore the setting of the poll_interval kernel parameter. But we know that this is not true for the actual firmware which is in fact respecting the setting of said parameter.
@Grarak and me have managed to get the messy "source code" of Lenovo to build. I have additionally added some security patches and stripped some kernel modules. Since we don't want to violate the GPL like Lenovo, we have pushed the kernel to GitHub.
Bear in mind that there may be some issues, given the kernel is a work in progress. It boots on stock as well as on cm-12.1, though.
Olivier said:
@Grarak and me have managed to get the messy "source code" of Lenovo to build. I have additionally added some security patches and stripped some kernel modules. Since we don't want to violate the GPL like Lenovo, we have pushed the kernel to GitHub.
Bear in mind that there may be some issues, given the kernel is a work in progress. It boots on stock as well as on cm-12.1, though.
Click to expand...
Click to collapse
Same kernel works for both 830f and 1050f?
Could you please post a compiled kernel? (which I assume can be flashed simply via fastboot)
Thanks!
raenye said:
Same kernel works for both 830f and 1050f?
Could you please post a compiled kernel? (which I assume can be flashed simply via fastboot)
Thanks!
Click to expand...
Click to collapse
Sure, here you go: kernel-yt2-20160327.img. I think it will boot on 1050F.
Olivier said:
Sure, here you go: kernel-yt2-20160327.img. I think it will boot on 1050F.
Click to expand...
Click to collapse
Hello, I have a 1050F too is somebody tried this kernel on 1050F? Is it possible to support wake gesture kernel extensions with this kernel?
Olivier said:
Sure, here you go: kernel-yt2-20160327.img. I think it will boot on 1050F.
Click to expand...
Click to collapse
I was able to unlock bootloader, install TWRP and flash this kernel via fastboot on both 830F and 1050F.
It works fine (and the battery life seems better since there's no wakelock bug).
Thanks!
Looking forward to alpha-grade CM....
raenye said:
I was able to unlock bootloader, install TWRP and flash this kernel via fastboot on both 830F and 1050F.
It works fine (and the battery life seems better since there's no wakelock bug).
Thanks!
Looking forward to alpha-grade CM....
Click to expand...
Click to collapse
Did you use.
Fastboot Flash recovery recoveryname.img.
or
Fastboot flash boot bootname.img
To send it to the tablet.
corasman said:
Did you use.
Fastboot Flash recovery recoveryname.img.
or
Fastboot flash boot bootname.img
To send it to the tablet.
Click to expand...
Click to collapse
The kernel goes to the boot partition. So 2nd option.
raenye said:
The kernel goes to the boot partition. So 2nd option.
Click to expand...
Click to collapse
Thanks ,I'll give it a try.
O.K tried this
I put the file in to my ADB folder
from a command prompt I typed Fastboot flash boot c:/adb/kernel-yt2-20160327.img and it returned
FAILED (remote: unknown command) any suggestion please.
corasman said:
Thanks ,I'll give it a try.
O.K tried this
I put the file in to my ADB folder
from a command prompt I typed Fastboot flash boot c:/adb/kernel-yt2-20160327.img and it returned
FAILED (remote: unknown command) any suggestion please.
Click to expand...
Click to collapse
Using windows? paths are c:\directory\file and not c:/directory/file
I used the fastboot executable from the tethered recovery package.
Checklist:
Did you unlock bootloader? it won't boot otherwise.
Did you backup current boot partition from TWRP/CWM?
Did you boot the tablet in fastboot mode? (down+pwr)
Can fastboot detect your tablet? (fastboot devices)
raenye said:
Using windows? paths are c:\directory\file and not c:/directory/file
I used the fastboot executable from the tethered recovery package.
Checklist:
Did you unlock bootloader? it won't boot otherwise.
Did you backup current boot partition from TWRP/CWM?
Did you boot the tablet in fastboot mode? (down+pwr)
Can fastboot detect your tablet? (fastboot devices)
Click to expand...
Click to collapse
Yes to all.
I wondered if the command slashes were the right way / or \ the way I used is what I used to unlock the bootloader and install TWRP.
I have tried the slashes the other way and get the same result, as in \ .
raenye said:
I was able to unlock bootloader, install TWRP and flash this kernel via fastboot on both 830F and 1050F.
It works fine (and the battery life seems better since there's no wakelock bug).
Thanks!
Click to expand...
Click to collapse
Hmm, I'm getting a high battery_wake_lock (on the April OTA firmware) -- even when running this kernel!
Any idea how can this be?
Hi,
I was trying to play a little bit with kernel provided by @Olivier and @Grarak ...
1. Binary Image kernel-yt2-20160327.img boots up fine on 1050l, but LTE is not working. Rest seems to be fine...
2. In next steps I replaced initrd.img with a little modified stock one - and LTE started to work - I removed from initrd almost all modules leaving only bcm43241.ko.
3. Battery wakelock problem seems not be resolved - brief check at bq27x00_battery.c in repository shows that wake_lock is still set under bq27x00_battery_suspend_resume()
... so I trying to fix this battery driver but I have problem with kernel - I can compile it successfully, but it doesn't boot
@Olivier:
1. Which branch was used to build kernel-yt2-20160327.img?
2. Which config did you use ?
My procedure using android-ndk-r12b toolchain:
# git clone ...github.com/lenovo-yt2-dev/android_kernel_lenovo_baytrail
# export PATH=~/android_yoga/toolchain/bin:$PATH
# export CROSS_COMPILE=x86_64-linux-android-
# export ARCH=x86
# make cyanogenmod_YT2_10_defconfig --- if this right config?
# make -j8 ----- lot's of warninigs, but kernel is compiled sucesfully.
# abootimg --create boot_test5.img -f bootimg.cfg -k bzImage -r initrd.img ---- bzImage from arch/x86/boot
> fastboot.exe flash boot boot_test5.img
... kernel stuck somewhere, it's doesn't even come to Zygote phase (lenovo animation). Is there any way to see kernel boot messages ?
Hi
I would also like to experiment with the Kernel, but I need to unlock the bootloader. unfortunately the thread is deleted files and I can not, can anyone help me even for private?
I have a 1380F in KitKat
Kind regards
airmalaga said:
Hi
I would also like to experiment with the Kernel, but I need to unlock the bootloader. unfortunately the thread is deleted files and I can not, can anyone help me even for private?
I have a 1380F in KitKat
Kind regards
Click to expand...
Click to collapse
I used this procedure: mobility.forumsee.com/a/m/s/p12-9574-0973888--yoga-tab-unlocking-daaa-deee-daaa-dooo.html
Patched ESP file I found on another forum: forum.android.com.pl/topic/259763-odblokowanie-bootloader%C3%B3w-yoga-tab-2/#entry4598175
For me it worked on Lolipop, but I as know bootloader changed arch x32->x64 during Lolipop->KK upgrade... I don't know if this esp will work on KK (at least do backup of ESP and boot partitions before).
---------- Post added at 12:07 PM ---------- Previous post was at 11:52 AM ----------
BTW: I was able finally to compile and startup my modified kernel using CM building engine from this thread .
I removed all wakelock code from bq27x00_battery_x8.c
For 1050L I merged: kernel from @Olivier repository + my patch on bq27x00_battery_x8.c + my initrd based on stock + stock Lolipop.
First tests seems to be very promising:
- finally NO battery_wakelock in Wakelock Detector
- LTE is working
- GPS is working
- Sound system is working
- No crashed till now
If anybody is interested i can attach img file.
Thx :good:
jasfasola said:
I used this procedure: mobility.forumsee.com/a/m/s/p12-9574-0973888--yoga-tab-unlocking-daaa-deee-daaa-dooo.html
Patched ESP file I found on another forum: forum.android.com.pl/topic/259763-odblokowanie-bootloader%C3%B3w-yoga-tab-2/#entry4598175
For me it worked on Lolipop, but I as know bootloader changed arch x32->x64 during Lolipop->KK upgrade... I don't know if this esp will work on KK (at least do backup of ESP and boot partitions before).
---------- Post added at 12:07 PM ---------- Previous post was at 11:52 AM ----------
BTW: I was able finally to compile and startup my modified kernel using CM building engine from this thread .
I removed all wakelock code from bq27x00_battery_x8.c
For 1050L I merged: kernel from @Olivier repository + my patch on bq27x00_battery_x8.c + my initrd based on stock + stock Lolipop.
First tests seems to be very promising:
- finally NO battery_wakelock in Wakelock Detector
- LTE is working
- GPS is working
- Sound system is working
- No crashed till now
If anybody is interested i can attach img file.
Click to expand...
Click to collapse
jasfasola said:
I removed all wakelock code from bq27x00_battery_x8.c
For 1050L I merged: kernel from @Olivier repository + my patch on bq27x00_battery_x8.c + my initrd based on stock + stock Lolipop.
Click to expand...
Click to collapse
Cool, could you push your patch to GitHub?
jasfasola said:
First tests seems to be very promising:
- finally NO battery_wakelock in Wakelock Detector
- LTE is working
- GPS is working
- Sound system is working
- No crashed till now
Click to expand...
Click to collapse
The kernel should be working, but the ALS is broken (seems to be a sensor from Avago) - you'll notice that if you use automatic brightness.
Olivier said:
The kernel should be working, but the ALS is broken (seems to be a sensor from Avago) - you'll notice that if you use automatic brightness.
Click to expand...
Click to collapse
Fixed. That was quite easy. Driver al3320 was in place. The problem was permissions set by script init.byt_t_ffrd8.rc in initrd. By default it's root/root, but it should be system/system. I already corrected paths and checked it - it's working. If you could give me permission to repo I can push the patch.
BTW: I see lot's of things are being hard-coded into initrd scripts. Since we changed config kernel, all those scripts must be checked. I can try to do it in free time...but some things are platform depended so, another original initrd from lolopop on 830f would be nice to compare...
jasfasola said:
so, another original initrd from lolopop on 830f would be nice to compare...
Click to expand...
Click to collapse
What do you need exactly? @jasfasola
I just spent a few days compiling this kernel. Fixed the paths and whatnot for RNDIS, etc. Its compiling fine but upon packing it with AnyKernel2 and flashing, I get a System Destroyed message, where I have to boot a TWRP img via fastboot and restore a working boot.img. I tried a brand new kernel source with no edits as well, same issue. What am I missing?
I did a make for tissot-perf_defconfig first, then I built it with make -j4 (i have 4 threads). Compiles to a Image.gz-dtb, place it in the AnyKernel2 root and zip it and flash. Flashes fine, boot fails before boot anim.
I tried manually packing the kernel into a boot.img i pulled from a TWRP backup (RR), but fastboot complains its missing DTB no matter which kitchen I use (AIK, Carliv Image Kitchen). Maybe this is the issue?
Thanks!
PS: I'm running it on top of RR 8.1 if that affects anything.
Also is there a Telegram I can join for these questions?
edit: tried pulling the config from a stock boot img using extract-ikconfig. still the same issue booting.
I've build a custom ROM for mako, following the instructions in the lineageos wiki. Everything went fine, I've got the installer package, and installed it, following the install instructions in the wiki.
But now, the device doesn't boot. "Google" appears on the screen, and than nothing happens. I've tried with a nightly build from lineageos, and this works flawless. So what am I missing with my own build?
Found it. I've skipped the step extracting binary blobs and putting them into the source. The build ends without error, even missing the blobs. But the system is not usable without them. After adding the blobs, the self build image booted as expected.
Extracting from the installed nightly missed some executables (e.g. efsks) so the build process failed. But I was able to extract them from the image file itself.