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HomeClockworkMod (CWM) Recovery easy install for RK3066 and RK3188 -- TWRP/CWM Flash-Tool and root for RK3288
 Please donate to support OMA and CrewRKTablets firmware work, thank you !
Firmware Guru
2013/06/11
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fine.
netlars
Per aspera ad astra, we rock the Tablets !
 If you like our firmwares, please consider making a donation to support our work.
Thank you!
2012/12/30
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- Mediacom M810C, Prestigio PMP5080B, Nextbook Next 8p, BQ Kepler, yifang M803C (OEM) >>> you may use the latest kernel of xteam/yatto
- I'm using perfectly well CrewRKTablets_RK29_Loox_CM10.1_4.2.2_v1.2.4 with original kernel_308_820_dmtech, which is the original of Yifang M900HC, the problem is that is annoying slow (a poor 2948 in Antutu 4).Â
- In the same tablet I have had XTEAM 4.13 by Yatto, android 4.1.1, system ext3, with the awesome kernel they installed in version 4.12, with support for zRAM, that you suggested to use in the paragraph above. This work great in the same M900HC with an impressive speed. (Overlocked and zRAM)
When I use such kernel by Yatto with your rom, happens the issue stated in OP. IMHO there is something related with ext4 (ROM) and ext3 (kernel). (No idea if this is right)
I want to have both worlds, or at least, a kernel capable of overlock and zRAM.
PD. I've been using fine, in CM10.1, the new "Google Home Launcher" or GEL (Google Experience Launcher), which is awesome for me... ¡it just need a better speed!.
Tablet Master-G G-820c (Yifang M900HC) 8" - RK2918
Tablet Onn 07HD (Yifang M7000NBD) 7"- AML8726-MXS
Tablet Onn 07DX (Yifang M7000KD) 7" - RK3066
Tablet Onn 07D (Yifang M7100KLD) 7"- RK3026
Phablet Samsung Galaxy Note 3
Cellphone Samsung Galaxy Trend
Moderator
Firmware Guru
2012/11/19
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I'm not sure if I understand you in the right manner, but the kernel is not formatted with ext3.
Did you make a complete flash, inkluding eraseidb and format_nand?
It's not clear for me how you installed the XTeam Kernel.
Per aspera ad astra, we rock the Tablets !
If you like our firmwares, please consider making a donation to support our work.
Thank you!
2012/12/30
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JochenKauz said
I'm not sure if I understand you in the right manner, but the kernel is not formatted with ext3.Did you make a complete flash, inkluding eraseidb and format_nand?
It's not clear for me how you installed the XTeam Kernel.
I don't know about kernels... I'm just a cook:
I was thinking that in kernel it's stated the type of file format (ext3, ext4)
I install the kernel using both ways: using loader and kernel, and doing a complete flash (erase IDB and OMA's modules). In both fails hanging in a loop.
I've tested many kernels using first method. Best suitable have been Mediacom-M820c3G which is compatible with my tablet, with issues in WiFi and battery status.
In fact I just need a kernel for Mediacom-M820c NO-3G, the one I use is original Mediacom-820c (Yifang M900HC).
As I've said I've had long time Xteam rom in my tablet. But as android 4.1.1, it has some limitations (beside of ext3).
Tablet Master-G G-820c (Yifang M900HC) 8" - RK2918
Tablet Onn 07HD (Yifang M7000NBD) 7"- AML8726-MXS
Tablet Onn 07DX (Yifang M7000KD) 7" - RK3066
Tablet Onn 07D (Yifang M7100KLD) 7"- RK3026
Phablet Samsung Galaxy Note 3
Cellphone Samsung Galaxy Trend
Moderator
Firmware Guru
2012/11/19
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Normally the kernels should be ready for ext3/ext4.
Do you know if yatto has published the sources for the zRam enabled kernel? I have looked at his github and did not found anything..
Per aspera ad astra, we rock the Tablets !
If you like our firmwares, please consider making a donation to support our work.
Thank you!
2012/12/30
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JochenKauz said
Normally the kernels should be ready for ext3/ext4.Do you know if yatto has published the sources for the zRam enabled kernel? I have looked at his github and did not found anything..
Did you try this:
https://github.com/yatto/xteam31/tree/master/kernel
 Uff! is from 2 years ago
Tablet Master-G G-820c (Yifang M900HC) 8" - RK2918
Tablet Onn 07HD (Yifang M7000NBD) 7"- AML8726-MXS
Tablet Onn 07DX (Yifang M7000KD) 7" - RK3066
Tablet Onn 07D (Yifang M7100KLD) 7"- RK3026
Phablet Samsung Galaxy Note 3
Cellphone Samsung Galaxy Trend
Moderator
Firmware Guru
2012/11/19
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Yepp, thats the problem.
Yatto published here the zRam patch, but I have not seen his kernel sources updated.
Per aspera ad astra, we rock the Tablets !
If you like our firmwares, please consider making a donation to support our work.
Thank you!
Contributor
2013/02/27
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I've published the last Kernel Source !
If you like there is a mod to Zram: the snappy compression mode.
JochenKauz said
Yepp, thats the problem.Yatto published here the zRam patch, but I have not seen his kernel sources updated.
Moderator
Firmware Guru
2012/11/19
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Hi yatto,
okay, so the sources are the latest ones, but without the config changes.
But what do you mean with "snappy compression mode"?
Per aspera ad astra, we rock the Tablets !
If you like our firmwares, please consider making a donation to support our work.
Thank you!
2012/12/30
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yattodettaman said
I've published the last Kernel Source !If you like there is a mod to Zram: the snappy compression mode.
Tante gracie caro Yatto!!!Â
I just hope that with this help to have a kernel for Yifang M900HC (Mediacom 820c, Dmtech 820)
Of course, JochenHauz have to do the trick.
But what do you mean with "snappy compression mode"?
 IMHO he is just giving a name to zRAM
Tablet Master-G G-820c (Yifang M900HC) 8" - RK2918
Tablet Onn 07HD (Yifang M7000NBD) 7"- AML8726-MXS
Tablet Onn 07DX (Yifang M7000KD) 7" - RK3066
Tablet Onn 07D (Yifang M7100KLD) 7"- RK3026
Phablet Samsung Galaxy Note 3
Cellphone Samsung Galaxy Trend
Contributor
2013/02/27
Offline
Google's Snappy data compression library is a faster alternative to LZO,
Zram currently uses LZO compression. With Snappy, it uses less CPU time and is thus more useful. On compressible input it compresses ~2.5x faster than LZO
and decompresses ~1.5-2x faster than LZO. On incompressible input, it skips the input at 100x faster than LZO and decompresses ~4x faster than LZOThe sacrifice in compression ratio is small.
Zram's LZO and Snappy support can be independently enabled at compile time and each zram device can switch between compression methods when unused.
When only a single compression method was enabled at compile time, no idirection penalty is incurred.
I've applied this patch :
http://www.spinics.net/lists/linux-driver-devel/msg13998.html
http://www.spinics.net/lists/linux-driver-devel/msg13999.html
To optimize Zram i enabled in the kernel :
CONFIG_CGROUP_MEM_RES_CTLR= y
CONFIG_CGROUP_MEM_RES_CTLR_SWAP=y
By default, the Linux kernel swaps in 8 pages of memory at a time. When using ZRAM, the incremental cost of reading 1 page at a time is negligible and may help in case the device is under extreme memory pressure.
To read only 1 page at a time, i added the following to init.rc:
write /proc/sys/vm/page-cluster 0
I also added the KSM support to the kernel :
CONFIG_KSM=y
and then i added add the following lines to
init.rc file:
write /sys/kernel/mm/ksm/pages_to_scan 100
write /sys/kernel/mm/ksm/sleep_millisecs 500
write /sys/kernel/mm/ksm/run 1
Whit these Mods the kernel run much better and the battery performance too.
Joken, You're right, there is no commit to the kernel source, but i've no time, sorry.
regards, Yatto
The following users say thank you to yattodettaman for this useful post:
DaremoS, JochenKauz
Contributor
2013/02/27
Offline
howto rock with CM10.1 by crewrktablets if yu have a Mediacom 810c or PMP5080B or BQKEPLER.
1) Download theRom cm10.1 1.2.4 from: http://crewrktablets.arctablet.com/?wpfb_dl=1300
Flash it but you have to use this files, instead of original ones :
a) this Paramters file: Zippyshare.com - parameter422
b) this Boot.img : Zippyshare.com - boot.img
3) this kernel.img : Zippyshare.com - CM10_kernel.img
After flashing the rom, reboot in recovery and run this scripts:
Format Nand zip : http://crewrktablets.arctablet.com/?wpfb_dl=635
Service jar Fix (iVery importatnt to avoid Bootloops): Zippyshare.com - CrewRKTablets_CM10.1_124_service_fix.zip
USB Bluetooth Support Patch: http://crewrktablets.arctablet.com/?wpfb_dl=1311
Zram Support patch: http://crewrktablets.arctablet.com/?wpfb_dl=1388
Xteam has made a new kernel for cm10.1 by crewrktablets with :
USB CSR Bluetooth Support
Zram Support (you have to enable it in developer settings)
KSM Support (you have to enable it in developer settings)
Fix camera and e Rotation
regards,
Xteam
The following users say thank you to yattodettaman for this useful post:
Oma7144
Moderator
Firmware Guru
2012/10/06
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Excellent yatto!
We should make this available for many users. Is it ok when I publish this on our blog?
Maybe you have some screenshots for presentation.
- Oma -
Per aspera ad astra, we rock the Tablets !
If you like our firmwares, please consider making a donation to support our work.
Thank you!
Contributor
2013/02/27
Offline
Yes, Of course, You can publish it ! 
I have no screenshot, because that is your rom. I didn't make any mod to the system. I only make a Kernel for your cm10.1 and a fix for service.jar to avoid botloop with my kernel that have the battery fix inside !
That's all.
I added Ksm in the kernel and in the boot.img like i wrote some post ago.... and battery life is much better !
Enable KSM in your kernels....
Bye....
P.S. KitKat ? Any News for rk29 ?!? 
regard,
yatto
The following users say thank you to yattodettaman for this useful post:
Oma7144
Moderator
Firmware Guru
2012/10/06
Offline
Here we go: http://crewrktablets.arctablet.com/?p=3143
Let's rock CM11 together ... netlars will get in touch with you.
- Oma -
Per aspera ad astra, we rock the Tablets !
If you like our firmwares, please consider making a donation to support our work.
Thank you!
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