Some background info:
I'm the author of PPP Widget which is an app that enables mobile data connections on Android devices with USB host capabilities - even if they are WiFi-only.
It turned out that many Android devices have the drivers for 3G sticks already on board, included with the stock kernel. The one large exception are Samsung devices ...
I started to provide the missing drivers as modules (mostly "ppp_async" and "option" which depends on "usb_wwan"). That worked well for some Google devices and also for Samsung devices running ICS, using the source packages from
http://opensource.samsung.com/
In their JB kernels though, Samsung enabled the "MODVERSION" option. Furthermore, compiling the modules with the officially recommended toolchain resulted in a different "module_layout" checksum than in the modules provided in the firmware.
This prevents using any additonal modules on the devices. "insmod" refuses to load these modules.
The only explanation for this problem is that the custom device configuration provided in the source packages does not match the configuration of the device kernel.
This is the case for all GT-P31xx and GT-P51xx models as far as I can tell.
My take is that Samsung is required to provide the correct kernel configuration under the rules of the GPL. Maybe anyone else wants to contact Samsung on this behalf; I already did several times - still waiting for an answer ...
That's the reason why I build everyting from source including the GPU driver and lost exFAT support http://forum.xda-developers.com/showthread.php?t=1859227 and the boot image result http://forum.xda-developers.com/showthread.php?t=1855700 .
ketut.kumajaya said:
That's the reason why I build everyting from source including the GPU driver and lost exFAT support
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Unfortunately, replacing the kernel is no option for end users. The modules I provide are going into a folder on the sdcard, and can be "insmod'ed" from there with no problem - once their magic string and the "modversions" are matching the kernel on the device. The latter is the wall I'm hitting ...
JFDee said:
Unfortunately, replacing the kernel is no option for end users. The modules I provide are going into a folder on the sdcard, and can be "insmod'ed" from there with no problem - once their magic string and the "modversions" are matching the kernel on the device. The latter is the wall I'm hitting ...
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Thanx alot for such a great development. ...
Adi™
Creator Of Sungsonic™HD
I have received a reply from Samsung. They have updated the JB open source package for GT-P3110, GT-P5110 and GT-N7100 (which previously included a config file from 3.0.15 for a kernel version of 3.0.31 !!).
Unfortunately, the modversions of the compiled kernel are still different and incompatible. I have replied with these finding.
Waiting again ...
BTW, the only recent kernel config consistent with the actual device kernel that I have found is for the GT-N8000 (3.0.31). So it is possible to provide a matching configuration.
JFDee said:
I have received a reply from Samsung. They have updated the JB open source package for GT-P3110, GT-P5110 and GT-N7100 (which previously included a config file from 3.0.15 for a kernel version of 3.0.31 !!).
Unfortunately, the modversions of the compiled kernel are still different and incompatible. I have replied with these finding.
Waiting again ...
BTW, the only recent kernel config consistent with the actual device kernel that I have found is for the GT-N8000 (3.0.31). So it is possible to provide a matching configuration.
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If You will start to work with kernel I'm willing to beta test with my P5110. Only issue for me is that I need to know what 3G dongle to buy (well need it anyway so would prefer an advice from someone who know something about it). I'm living in Poland and Ireland (once here once there) so I can even test LTE modems (well donations here, myself can spend up to ~50€ on 3G one) because in Wroclaw, Poland I heard it's quite good, also I got H+/H on SGSII here. While in Ireland signal is not THAT strong due to fact most of places are quite remote (except Dublin, Galway etc). Hope I can help in either way
This is what I wrote to Samsung concerning the botched configuration file provided with the latest GT-P3110 kernel source:
Thank you for the source code update.
However, I have asked for the kernel configuration that matches exactly the kernel on the GT-P3110.
I have compiled the kernel from the provided update, but the module layout checksum does *not* match the one from the kernel running on my device.
On the device: module_layout 0xb5a27644
From source: module_layout 0x143474f1
I have used the recommended toolchain "CodeSourcery 2010q1" and the unchanged config file provided with the source ("android_espresso_omap4430_r04_user_defconfig").
Please be aware that you are obliged by the GPL to provide the correct config file for the binary kernel that you are distributing.
As a side note: the configuration provided with the kernel source for the GT-N8000 *does* match the kernel on the device, so there is no doubt that it is possible to get the configuration right.
Other Android vendors are just enabling the "embedded" config file in the kernel, so that the correct configuration is simply available on the device as "/proc/config.gz". This is so much less trouble. I suggest that you enable this option for Samsung kernels too.
Regards,
...
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The GT-N8010 is also in the same situation you describe - config for 3.0.15 and jb stock kernel at 3.0.31, can't build working modules for stock.
davp, there seems to have been some activity at the Samsung open source center after my messages.
I suggest you make yourself heard as well. Use the "Inquiry" button next to the package download link in the table for your device.
To be able to add working modules to the device, the kernel configuration for the source has to be 100% compatible. It does not matter if any closed drivers are missing as we don't want to replace the kernel - but all those general debugging config options should be correct.
BTW, there is a history of similar issues:
http://forum.xda-developers.com/showthread.php?t=1123643
The kernel source for the GT-P3110 has been updated once more, and this time they have fixed the configuration.
With the latest JB update we can actually build working modules for the current firmware.
I confirmed this to the Samsung people and reminded them of the other devices in need of this fix: GT-P3100, GT-P5100, GT-P5110, GT-N7100 and probably more (like the GT-N8010).
JFDee said:
The kernel source for the GT-P3110 has been updated once more, and this time they have fixed the configuration.
With the latest JB update we can actually build working modules for the current firmware.
I confirmed this to the Samsung people and reminded them of the other devices in need of this fix: GT-P3100, GT-P5100, GT-P5110, GT-N7100 and probably more (like the GT-N8010).
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So for now we might get stock kernel which will support 3G modems via USB OTG? How about other kernels such as CM10.1?
I'm looking for good 3G dongle then Any advices?
Additional kernel modules for stock JB P31xx (tested) and P51xx (untested), contains:
- usb_wwan, ppp_async, and option module for PPP Widget
- dns_resolver, md4, and cifs module for cifs/samba filesystem support
- sunrpc, lockd, and nfs module for nfs filesystem support
Kernel config file attached.
FTDI Single Port Serial Driver added.
cifs.ko not working on P3100 JB 4.1.2 (stock rooted)
ketut.kumajaya said:
Additional kernel modules for stock JB P31xx (tested) and P51xx (untested), contains:
- usb_wwan, ppp_async, and option module for PPP Widget
- dns_resolver, md4, and cifs module for cifs/samba filesystem support
- sunrpc, lockd, and nfs module for nfs filesystem support
Kernel config file attached.
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Hi ketut.kumajaya,
I'm trying to use cifs.ko but i get:
/system/lib/modules # insmod cifs.ko
insmod: can't insert 'cifs.ko': unknown symbol in module or invalid parameter
I have:
/system/lib/modules # uname -a
Linux localhost 3.0.31-1084989 #1 SMP PREEMPT Mon Mar 25 14:53:07 KST 2013 armv7l GNU/Linux
I tried other cirs.ko with same result.
Can you give me some clues of what can I do?
Thank you.
Try insmod in order:
insmod dns_resolver.ko
insmod md4.ko
insmod cifs.ko
If something goes wrong, see the kernel messages using dmesg.
ketut.kumajaya said:
Try insmod in order:
insmod dns_resolver.ko
insmod md4.ko
insmod cifs.ko
If something goes wrong, see the kernel messages using dmesg.
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Great!!!
That's the solution.
In my Tab 10.1 4.0.4 I'm loading (different kernel and different modules, of course):
insmod cifs.ko
insmod md4.ko
insmod nls_utf8.ko
So I was not thinking I should use a different order.
Thank you.
I'm looking for a how to on compiling modules for a stock ROM. Is this even possible? My ultimate goal is to either get an external usb wifi adapter working, or compile a different kernel mod for our internal wifi card(one with monitor mode).
*chirp* *chirp* Darn those loud crickets... No seriously... ANYONE?
Take a look at this
http://forum.xda-developers.com/showthread.php?t=1974362
And modify it too what you need.
I don't think its possible to recompile our kernel driver for monitor mode.. you might wanna google "hashcode github maserati" and search through the github.
Sent from my XT894 using xda app-developers app
I've got USB OTG working, I'm trying to get it working with modules that aren't currently compiled. It's not just the wireless driver, but there are several modules that could be compiled, like a dvd drive.
I appreciate the help though
Wrong question?
Maybe I am asking the wrong question? I am trying to get a piece of hardware working with my phone. It works fine in several flavors of linux and has a driver source available(display link). How do I go about getting this to work?
Desperate for proper cifs support, I tried out the STOCK PLUS rom from the forum but unfortunately it doesn't seem to support unicode characters (I assume the dev hasn't included nls_utf8.ko).
So what I'll do is to compile cifs.ko, nls_utf8.ko, md4.ko myself for the newest build of Ouya firmware that I can obtain, and share them here with people.
However since I'm a noob on this I need somebody to first give me a direction on how to compile the kernel modules. I've searched online but there doesn't seem to be a good tutorial anywhere. Apparently for many people it should be a piece-of-cake task though. If someone does respond and teache me the instructions then I'll do all the manual work and compile these things.
Hopefully eventually this post would be helpful for other people as well - I might compile other modules on demand and share here if I learn how in the end.
EDIT:
OK, apparently you'd need to configure the kernel and compile it with utf8 support.
1. clone this repo: https://github.com/ouya/ouya_1_1-kernel
2. follow the step-by-step kernel configuration tutorial at http://forum.xda-developers.com/showthread.php?t=2110842
3. note when you run 'make menuconfig'; remember to tick the utf8 option in the native language support section
I haven't had time to do this but theoretically it should give you the correct result.
Additional note:
Although STOCK PLUS does not support utf8 charset for smb (confirmed); it does support utf8 for nfs so you can instead do a nfs setup.
With no custom kernels available for us on stock, I decided to try to build one from source. Then add a few governors and maybe a few other things but first I need to get a stock one fully working. I have got it working except for the WiFi will not even turn on. Ive tried placing the modules in /system/lib/modules and just about everything else I can find to try but it will not work. Has anyone been able to get a kernel compiled with working WiFi? If so what am I missing here?
Edit: I think it may have to do with wlan.ko. It is not compiling with make or make modules. I downloaded the source code for it on Moto's Git but I'm not sure how to get it to compile. There is no Makefile in the source. Any ideas?
Check out my git: https://github.com/zwliew/victara/commits/kitkat. It has the relevant commits to compile the wifi module.
zwliew said:
Check out my git: https://github.com/zwliew/victara/commits/kitkat. It has the relevant commits to compile the wifi module.
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Ok, I got the module to build but it says the file size is 41.2mb. This seems very large. Also, will this need to be renamed to pronto_wlan because in /system/lib/modules there is a pronto folder with that module located in it?
/wiki/Motorola_Moto_G5s(motorola-montana)
The kernel used is from motorola's repository, since working usb networking is a must have, I'm not so sure if I can rely on lineageos kernel(I'm not sure if it is a matter of a kernel or of the vendor/device tree I decided to play it safe) , so I decided to start from scratch.
Right now on the roadmap:
1. Clean up the messy commits and start from a new branch.
2. Get merged into postmarketos official repository. (I can do so right now, but I rather go back and re-do the commits, remove the unnecessary changes).
3. Fix DPI settings, default ones are optimized for Desktop.
4. Find out the right pixelformat to use with osk-sdl those will translate into charging/battery-sdl and Filesystem Encryption.
5. Get wifi, gps ,accelerometer, bluetooth audio working. (Wifi and accelerometer doesn't work for 100%, )
test gps/get it working, get accelerometer working ,fix DPI.
6. Lastly mainlining kernel, which is required to get the WIP postmarketos modem driver and 3D Acceleration working.
Optional:
1. Porting MultiROM and patching a kernel to support kexec-hardboot patch on our device.
Once I will get my internet back I will work on @up things and provide:
1. Instructions on getting this linux distribution compiled.
2. Fastboot bootable kernel and sdcard image. I would prefer for you to boot a kernel and using sdcard over a flashable zip image for now, disappointment guaranteed.
WIFI networking most likely doesn't work since I haven't created device/firmware-montorola-montana package with wifi firmware.
If you want to contribute hit me up, I have a very slow connection and possibly have it for couple of days, so I might not be able to do any work for some time.
I don't have enough posts to make a DEVDB nor a development thread, so take it as [Q&A] thread that will hopefully get me to the minimal number of posts I require.
I also can't post outside links apparently the repositories I here present are relative to postmarketos wiki, github, gitlab or codeaurora git.
Repositories:
Kernel:
/kubast2/kernel-msm
Wlan kernel module and firmware:
/MotorolaMobilityLLC/vendor-qcom-opensource-wlan-prima
/quic/la/platform/vendor/qcom-opensource/wlan/prima/tree/
For configs I use a twrp image of stock oreo, I will need to use some config files from that backup image in place of the wlan driver provided configs.
Device and proprietary repositories by the montana development team will be useful for reference of existing blobs and configuration files, while other device ports from postmarketos repository will be useful for reference on when they need to be placed within the rootfs of postmarketos:
/montanadevelopment
/postmarketOS/pmaports
Stock kernel is 32-bit, which is why USB tethering works on LOS14.1, which is 32-bit. Take a look at their trees:
github.com/kayesk
USB tethering fixed in ARM64.
JarlPenguin said:
USB tethering fixed in ARM64.
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Alright thanks, I don't have notifications for xda-developers, I will build on the basis of your kernel and push the change.
I see your kernel is already on a mainlining effort front.
kubast2-farelka said:
Alright thanks, I don't have notifications for xda-developers, I will build on the basis of your kernel and push the change.
I see your kernel is already on a mainlining effort front.
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Actually it was fixed in init scripts. Are you still working on this project?