[NAND][ROM] CyanogenMod 7 : kernel updates

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CoolrunnerII

Senior Member
Jan 27, 2012
132
226
Trondheim
I have tested the new kernel now. For the first time charging the battery fully and then discharging.

The results are positive, but not spectacular. With light use you would get about 30 hours with the old kernel.

Now I just passed 30 hours and still the battery is at 3750 mV. The phone dies at about 3650, and with some luck I may get 40 hours.

So I found one cause of battery drain, and probably still have one or two more to find. :p
 
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C

CoolrunnerII

Senior Member
Jan 27, 2012
132
226
Trondheim
When the phone had been on for about 46 hours the 3g modem turned off, so I guess that is the usable battery time.

Almost two days is really great compared to 30 hours we got previously.
 
C

CoolrunnerII

Senior Member
Jan 27, 2012
132
226
Trondheim
wallaceff said:
What's next on your list?
Click to expand...
Click to collapse

First I have to finnish with the pannel driver. It looks like it was worked on intensively for a while, and then just dropped when it started behaving more or less.

It actually freezes the cpu for more than a second after pressing the power button. So that is one of the reasons it takes 3-4 seconds before getting a picture. Sometimes it even takes so long time to get the picture on the screen that it goes back to suspend before showing the unlock-screen.

I am also going to connect the phone to an external power supply and measure what the battery drain in suspend is now. Depending on that I'll know what areas may increase the battery life even more.
 
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kuskro

kuskro

Senior Member
Sep 6, 2009
361
312
CoolrunnerII said:
First I have to finnish with the pannel driver. It looks like it was worked on intensively for a while, and then just dropped when it started behaving more or less.

It actually freezes the cpu for more than a second after pressing the power button. So that is one of the reasons it takes 3-4 seconds before getting a picture. Sometimes it even takes so long time to get the picture on the screen that it goes back to suspend before showing the unlock-screen.

I am also going to connect the phone to an external power supply and measure what the battery drain in suspend is now. Depending on that I'll know what areas may increase the battery life even more.
Click to expand...
Click to collapse

Hi, just tell you that I disabled suspend (wakelock) with a script for init.d and the wifi works without problems with your last stable kernel (neither misconnections nor disconnections). Also, I think that the current suspend process drains the battery because when I disabled it the phone consumed less battery. Maybe a temporary solution is disable suspend from the kernel.

Best.
 
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kuskro

kuskro

Senior Member
Sep 6, 2009
361
312
CoolrunnerII said:
Maybe you can use fastboot and flash the latest boot.img file (The one with LCD power off) into your phone, and then check if you still get lost keys.

I haven't had the problem on my phone in a long time, but I think the fix in the latest kernel should fix your problem. But I need someone to test it.

CRII
Click to expand...
Click to collapse

Well, I was testing your last kernel (the one with LCD power off) on ZeamDroid and it works pretty well (screen artifacts aren't important). I got some wifi disconnections but it's dued to the suspend problem, as soon as I disabled the wakelock the wifi problems disappeared. I could not give you feedbacks about screen brightness because I disabled it via modifying the framework but I think I can manually turn it on again (I will try it later).

I going to do minor changes over the last ZeamDroid version to have this kernel working on it. I think it can help you to get more feedback about it, so today I'll release a new version of ZeamDroid with your new kernel.

I making some tests about the battery duration with and without suspend process. I will tell you something about later.

Many thanks for your work, you are the only one that can give light to our old xperia x1. Please, I beg you help to solve wifi problems to have wifi-tether working.

PD: I think that the hw key bugs that people mentioned over your rom are because of the default lockscreen and the animations. Disabling the animations is ok but not enough, you need to disable the lockscreen, also.
 
Last edited:
C

CoolrunnerII

Senior Member
Jan 27, 2012
132
226
Trondheim
kuskro said:
Well, I was testing your last kernel (the one with LCD power off) on ZeamDroid and it works pretty well (screen artifacts aren't important). I got some wifi disconnections but it's dued to the suspend problem, as soon as I disabled the wakelock the wifi problems disappeared. I could not give you feedbacks about screen brightness because I disabled it via modifying the framework but I think I can manually turn it on again (I will try it later).

I going to do minor changes over the last ZeamDroid version to have this kernel working on it. I think it can help you to get more feedback about it, so today I'll release a new version of ZeamDroid with your new kernel.

I making some tests about the battery duration with and without suspend process. I will tell you something about later.

Many thanks for your work, you are the only one that can give light to our old xperia x1. Please, I beg you help to solve wifi problems to have wifi-tether working.

PD: I think that the hw key bugs that people mentioned over your rom are because of the default lockscreen and the animations. Disabling the animations is ok but not enough, you need to disable the lockscreen, also.
Click to expand...
Click to collapse

Hi

I haven't looked into wifi tethering at all. Maybe you could summarize what the problems are? and what steps you would expect to do to get wifi tethering and where it goes wrong.

If tethering needs ipv4 routing you at least have to load all the networking modules that are included in the boot.img files I have uploaded. (They are not included in the ota package)

I have a feeling you may have to turn off power saving in the wifi-card to get it working. That is something I have looked into before, but never figured out. It should be possible to do a ugly work-around to make it work anyway, but I hope to avoid that.
 
kuskro

kuskro

Senior Member
Sep 6, 2009
361
312
CoolrunnerII said:
Hi

I haven't looked into wifi tethering at all. Maybe you could summarize what the problems are? and what steps you would expect to do to get wifi tethering and where it goes wrong.

If tethering needs ipv4 routing you at least have to load all the networking modules that are included in the boot.img files I have uploaded. (They are not included in the ota package)

I have a feeling you may have to turn off power saving in the wifi-card to get it working. That is something I have looked into before, but never figured out. It should be possible to do a ugly work-around to make it work anyway, but I hope to avoid that.
Click to expand...
Click to collapse

I lack experience, too. But I'm sure that part of the problems aren't in the kernel, I think that the problem is in iptables, wpa_suplicant and tiwlan.ini and maybe we need to boot a new wlan.ko module through init.d. Does the kernel support netfilter (CONFIG_NETFILTER, CONFIG_IP_NF_IPTABLES and CONFIG_NETFILTER_XT_MATCH_MAC)?

Now, I'm overwhelmed because of my job and I can find time to modify the rom. Sorry.
 
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  • 31
    Z
    zargloub
    Hi, i work on kernel only, from Alexander's repository.
    You can update only the kernel whith fastboot, using boot img from archive.
    Of course, given "as it", if your phone may unlikely be damaged, i'm not responsible for it. I'm just sharing with interrested people work i do for myself.

    ###############################################
    February 8th 2012
    g3434d04 http://www.file-upload.net/download-4098661/update.zip.html

    This new corrects :
    * framebuffer that isn't updated after resume while there isn't external event.
    (black screen when out of suspend)
    * battery management

    Remaining to do :
    * libgps
    * Fix the Wifi indicator up in the status bar to correspond to its signal strength + wifi & BT mac adress
    * Wifi crash when connected and device suspended
    * When go to plane mode and come back from it, phone call terminate immediatly.
    * Often, data connexion need to be relaunched
    * better camera support + frontal camera
    * fat partition on sdcard at boot (but not prioritary on my mind, and might not be a kernel problem).
    * fm radio
    * Light sensor for the LCD

    ###############################################
    February 10th 2012
    g9aa4109 : http://www.file-upload.net/download-4103743/update.zip.html
    The same, reverting modif for volume keys :
    g3803607 : http://www.file-upload.net/download-4104515/update.zip.html
    Found battery datasheet :) : http://www.digchip.com/datasheets/parts/datasheet/280/DS2746-pdf.php
    There's a register to correct accum capacity register increase. Added support of it when battery seems full and not charging anymore.
    Found more information about the accu capacity register. So i modifyed the comportement (accum value correction) for low value.
    But not tested, battery still not low enough.
    Edit : low value accum value correction does not work at all. You should not use this version. Ill reread datasheet monday.
    Edit2: bug of shame found :-s
    unsigned char i2c_msg[3];
    i2c_msg[0] = r;
    - i2c_msg[2] = v & 0xFF;
    + i2c_msg[1] = v & 0xFF;
    i2c_master_send(pclient, i2c_msg, 2);
    ###############################################
    February 13th 2012
    From now, only boot.img will be sended jerrytan93 will make complete packages. You can update kernel with fastboot or use his package.
    g392f03a : http://www.file-upload.net/download-4112252/boot.img.html
    Correct previous bug.
    Add default accum bias value at startup.
    Low voltage accum correction not yet working ...
    ###############################################
    February 13th 2012
    gc1c1691 : http://www.file-upload.net/download-4112793/boot.img.html
    Battery : Correct bug about temperature value, fake value was read when changing ACR and Android was shutting down, and so, could update low power ACR correction.
    ###############################################
    February 14th 2012
    g8b7498e : http://www.file-upload.net/download-4116028/boot.img.html
    Stop using BIAS to control accum value, and modify them manually
    ###############################################
    February 15th 2012
    g7d2b8de : http://www.file-upload.net/download-4118062/boot.img.html
    Improve high voltage end charge detection and add near conditions
    ###############################################
    February 15th 2012
    ge8a16dd http://www.file-upload.net/download-4119224/boot.img.html
    Again battery management correction, and removing battery logs. I hope last version. Testing until tomorow.
    ###############################################
    February 20th 2012
    gb3f6c5b http://www.file-upload.net/download-4132262/boot.img.html
    Battery improvments again : better support of low voltage (and low power correspond now to 15%), prevent indicator from going lower than 15% when voltage is still correct.
    EDIT : !!!!!!! DO NOT USE !!!! After some days, problems appears. Switch back to previous ge8a16dd
    ###############################################
    February 28th 2012
    gf111062 http://www.file-upload.net/download-4154237/boot.img.html
    * New battery improvment : correct very high values for acr, does not go up to 100% values when plug/unplug
    * backlight : pass better values to hardware
    * From now, modules are included, so you can do modprobe, for example for nat
    ###############################################
    March 1st 2012
    g7b652eb http://www.file-upload.net/download-4158027/boot.img.html
    Minor updates on brightness : lower values for leds, higher maximum value for backlight
    ###############################################
    March 19th 2012
    g7e16eb7 http://www.file-upload.net/download-4197091/boot.img.html
    Higher maximum value for backlight, some improvements on battery managing.
    From now, packaged with neopeek's modified rootfs. Corrects bug on minimum cpu freq value and others, like netd daemon launch (interfaces android with network events ...)
    ###############################################
    March 22th 2012
    g21761cf http://www.file-upload.net/download-4204721/boot.img.html
    correction for battery (end charge detection and low value shutdown). I hope last modif on this driver. Seems ok now.
    wifi : correction on signal level read from chip, but android still gets bad values.
    ###############################################
    March 23th 2012
    gbe0fc00 http://www.file-upload.net/download-4206990/boot.img.html
    wifi : revert previous modification
    ###############################################
    April 4th 2012
    gc30016e http://www.file-upload.net/download-4239101/boot.img.html
    Diffs from March 19th (g7e16eb7) version :
    acr battery register management tries to make better ...
    minimum cpu freq down to 19 (actualized in boot.img-ramdisk/init.kovsky.rc too)
    prevent from keys wake up screen (when in your pocket)
    This version seems not working well, but i don't know wich commit you'll have to revert :)
    I won't work anymore on the kernel, because my battery is dead and i will buy a new phone.
    ###############################################
    june, 11th 2012
    g62c777c http://www.file-upload.net/download-4435319/boot.img.html
    Battery improvment with brand new one Elibl bought to me. (thanks !) :)
    ###############################################
    june, 11th 2012
    gc7e3fa8 http://www.file-upload.net/download-4435456/boot.img.html
    Change NAVI_SILVER_RIGHT to KEY_SEARCH
    ###############################################
    june, 14th 2012
    g57e5113 http://www.file-upload.net/download-4444937/boot.img.html
    low battery voltage from 3.4V to 3.5V
    ###############################################
    june, 19th 2012
    gfd19c03 http://www.file-upload.net/download-4459644/boot.img.html
    Add commit from CoolrunnerII : " Do not turn on auto focus vdd (kovsky_af_vdd(1)). Auto focus control doesn't work anyway. Without power the lens is in infinite focus length that give ok images at more than a meter distance."
    Not tested.
    ###############################################
    june, 29th 2012
    gf3ce616 http://www.file-upload.net/download-4489319/boot.img.html
    Add commit from CoolrunnerII : "fix for the lost call bug."
    Not tested.

    ###############################################
    ###############################################
    Some people asked me how to rebuild boot.img. Here is a way to do.
    You should use debian whith classic dev tools packages (arm gcc, git, etc ...).
    It's easyier to make a script to make compilation and resend by fastboot.

    # Get boottools
    git clone https://github.com/AndroidRoot/BootTools.git
    cd BootTools
    make
    cd ..

    # Get and build kernel (if you want to use mine)
    git clone git://gitorious.org/~poussevin/linux-on-qualcomm-s-msm/tp-alex-linux-xperia.gi
    t -b android-2.6.35

    cd tp-alex-linux-xperia
    cp arch/arm/configs/htc_msm_android_defconfig .config
    make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi- TARGET_BOARD_PLATFORM=msm7k
    make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi- TARGET_BOARD_PLATFORM=msm7k modules
    rm -rf modules_path
    mkdir modules_path
    make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi- TARGET_BOARD_PLATFORM=msm7k INSTALL_MOD_PATH=modules_path modules_install
    cd ..

    # Recreate bootdir
    rm -rf newboot
    mkdir newboot
    cd newboot/

    # Unpack original boot.img
    export PATH=../BootTools/:$PATH
    cp ../boot.img .
    ../BootTools/unpack-bootimg.sh boot.img
    rm -rf boot.img-ramdisk/lib

    # Replace image
    cp ../tp-alex-linux-xperia/arch/arm/boot/zImage boot.img-kernel

    # Change minimum cpu freq
    sed -i 's/min_freq 122880/min_freq 19200/g' boot.img-ramdisk/init.kovsky.rc

    # Add modules
    cp -rf ../tp-alex-linux-xperia/modules_path/* boot.img-ramdisk

    # Rebuild boot.img
    rm boot.img-ramdisk.cpio.gz
    cd boot.img-ramdisk
    find . | cpio -o -H newc | gzip > ../boot.img-ramdisk.cpio.gz
    cd ..
    mkbootimg --cmdline "fbcon=rotate:2 smd_rpcrouter.hot_boot=1 no_console_suspend" --kernel boot.img-kernel --ramdisk boot.img-ramdisk.cpio.gz -o boot_new.img
    cp boot_new.img ../boot.img
    cd ..
    rm -rf newboot
    View
    10
    Z
    zargloub
    Hi, thank all for your proposals, Elibl said he send me one.
    I didn't realied so many people were using this kernel.
    So i have a wonderfull phone for everyday (Defy+ is a good choice), and when i'll have an alive battery and some time i'll continue to work on the kernel.
    View
    9
    Z
    zargloub
    For now battery is still near the x1 on my desk. I got it back from my daugther,
    Lot of work this month, but i'll have a look as soon as i'll have some free time. Don't worry :)
    View
    7
    C
    CoolrunnerII
    I think I finally have gotten somewhere with the battery drain. Alex had written some code to turn of power to the LCD-panel, but he had put a "return;" in front of it. I removed it and Voilá: Lower battery drain :D

    You do get some artifacts on the screen when going out of suspend. I think this is just an annoyance, but I have just tested it since last night.

    I just uploaded a boot.img file.
    View
    4
    Z
    zargloub
    Peteflyman said:
    The percentage is calculated from Volt readings and not storage capacity (mAh) :)
    Click to expand...
    Click to collapse

    It's a bit more complicated.
    There's an internal register in the battery, that increase or decrease, managed by battery chip.
    We can correct values, when we estimate it's not good, in the driver (for example, if you don't do anything, the register grows while it's pluged, even if charge finished).
    We estimate in the driver the "full" value of this register, and calculate ratio with it.
    View

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