High contrast bug

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LehKeda

LehKeda

Senior Member
Jan 26, 2014
768
671
My little cave
Hi,
it has been a long time since the last discussion about high contrast bug and here we are discussing it again .
This morning "Muh Hisyam Kamil" has sent me his dmesg log and I found that
[ 8055.440820] 66D
[ 8055.590956] 66U
[ 8059.959035] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 100
[ 8059.959059] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 22
[ 8059.977964] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 99
[ 8059.977987] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 22
[ 8060.013459] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 98
[ 8060.013481] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 22
[ 8060.025496] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 95
[ 8060.025519] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 22
[ 8060.043586] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 91
[ 8060.043607] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 23
[ 8060.058801] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 88
[ 8060.058823] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 23
[ 8060.078772] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 85
[ 8060.078798] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 23
[ 8060.092008] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 81
[ 8060.092031] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 24
[ 8060.108827] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 78
[ 8060.108850] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 24
[ 8060.128235] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 75
[ 8060.128258] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 25
[ 8060.142150] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 71
[ 8060.142171] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 25
[ 8060.163874] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 68
[ 8060.163904] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 26
[ 8060.175561] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 65
[ 8060.175585] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 26
[ 8060.193389] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 61
[ 8060.193411] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 26
[ 8060.208609] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 58
[ 8060.208631] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 27
[ 8060.225783] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 55
[ 8060.225806] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 27
[ 8060.242260] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 51
[ 8060.242283] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 28
[ 8060.258772] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 48
[ 8060.258795] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 28
[ 8060.278017] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 45
[ 8060.278045] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 28
[ 8060.328830] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 41
[ 8060.328853] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 29
[ 8060.346277] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 38
[ 8060.346306] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 29
[ 8060.408776] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 37
[ 8060.408800] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 29
[ 8060.425322] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 33
[ 8060.425346] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 30
[ 8060.693047] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 24
[ 8060.693070] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 31
[ 8060.743916] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 23
[ 8060.743938] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 31
[ 8060.859006] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 21
[ 8060.859032] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 31
[ 8060.875243] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 19
[ 8060.875267] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 32
[ 8062.108925] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 20
[ 8062.108949] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 32
[ 8062.125551] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 24
[ 8062.125574] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 31
[ 8062.142152] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 27
[ 8062.142175] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 31
[ 8062.162943] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 30
[ 8062.162965] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 30
[ 8062.175797] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 34
[ 8062.175821] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 30
[ 8062.192087] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 37
[ 8062.192109] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 29
[ 8062.210260] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 40
[ 8062.210283] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 29
[ 8062.225554] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 44
[ 8062.225577] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 29
[ 8062.242007] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 47
[ 8062.242030] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 28
[ 8062.260576] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 50
[ 8062.260598] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 28
[ 8062.275670] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 54
[ 8062.275693] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 27
[ 8062.292031] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 57
[ 8062.292053] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 27
[ 8062.310856] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 60
[ 8062.310879] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 27
[ 8062.328084] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 64
[ 8062.328107] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 26
[ 8062.343660] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 67
[ 8062.343683] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 26
[ 8062.359139] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 70
[ 8062.359162] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 25
[ 8062.392392] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 72
[ 8062.392416] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 25
[ 8062.408633] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 73
[ 8062.408656] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 25
Click to expand...
Click to collapse

The screen brightness starts at so high density and gradually decreases to low value (from 100 to 73) and when I take kmsg log while I open my device i found that
<4>[96652.836489] 116D
<4>[96652.976105] 116U
<4>[96653.221964] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 163
<4>[96653.453635] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 163
<4>[96653.453648] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 16
Click to expand...
Click to collapse
so if look at the density values you would see a huge difference between the 2 devices. I assume that might be a kernel issue
I've created this thread so that all further discussions would be here and If there's something to test you guys post the results here .
 
  • Like
Reactions: Sansky12, dabakale and M. Hisyam Kamil
Sansky12

Sansky12

Senior Member
Feb 19, 2017
57
8
Ranchi
I dont think you guys still work on this device.....but still....
I've noticed that high contrast bug appears when the device goes into deepsleep and then is woken up by the user..... @LahKedathat app from that guy on FB works by not letting the device into deepsleep.....you already know this, don't you?.
 
RJinxed

RJinxed

Senior Member
Jun 9, 2015
201
126
Sansky12 said:
I dont think you guys still work on this device.....but still....
I've noticed that high contrast bug appears when the device goes into deepsleep and then is woken up by the user..... @LahKedathat app from that guy on FB works by not letting the device into deepsleep.....you already know this, don't you?.
Click to expand...
Click to collapse

deepsleep is a feature where the cpu frequency would go to the lowest clock when the screen is off. if you disabled this, it'll drain your battery alot by still running at full frequency even if you're not using it.
 
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  • 3
    LehKeda
    LehKeda
    Hi,
    it has been a long time since the last discussion about high contrast bug and here we are discussing it again .
    This morning "Muh Hisyam Kamil" has sent me his dmesg log and I found that
    [ 8055.440820] 66D
    [ 8055.590956] 66U
    [ 8059.959035] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 100
    [ 8059.959059] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 22
    [ 8059.977964] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 99
    [ 8059.977987] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 22
    [ 8060.013459] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 98
    [ 8060.013481] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 22
    [ 8060.025496] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 95
    [ 8060.025519] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 22
    [ 8060.043586] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 91
    [ 8060.043607] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 23
    [ 8060.058801] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 88
    [ 8060.058823] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 23
    [ 8060.078772] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 85
    [ 8060.078798] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 23
    [ 8060.092008] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 81
    [ 8060.092031] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 24
    [ 8060.108827] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 78
    [ 8060.108850] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 24
    [ 8060.128235] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 75
    [ 8060.128258] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 25
    [ 8060.142150] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 71
    [ 8060.142171] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 25
    [ 8060.163874] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 68
    [ 8060.163904] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 26
    [ 8060.175561] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 65
    [ 8060.175585] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 26
    [ 8060.193389] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 61
    [ 8060.193411] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 26
    [ 8060.208609] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 58
    [ 8060.208631] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 27
    [ 8060.225783] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 55
    [ 8060.225806] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 27
    [ 8060.242260] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 51
    [ 8060.242283] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 28
    [ 8060.258772] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 48
    [ 8060.258795] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 28
    [ 8060.278017] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 45
    [ 8060.278045] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 28
    [ 8060.328830] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 41
    [ 8060.328853] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 29
    [ 8060.346277] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 38
    [ 8060.346306] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 29
    [ 8060.408776] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 37
    [ 8060.408800] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 29
    [ 8060.425322] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 33
    [ 8060.425346] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 30
    [ 8060.693047] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 24
    [ 8060.693070] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 31
    [ 8060.743916] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 23
    [ 8060.743938] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 31
    [ 8060.859006] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 21
    [ 8060.859032] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 31
    [ 8060.875243] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 19
    [ 8060.875267] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 32
    [ 8062.108925] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 20
    [ 8062.108949] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 32
    [ 8062.125551] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 24
    [ 8062.125574] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 31
    [ 8062.142152] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 27
    [ 8062.142175] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 31
    [ 8062.162943] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 30
    [ 8062.162965] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 30
    [ 8062.175797] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 34
    [ 8062.175821] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 30
    [ 8062.192087] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 37
    [ 8062.192109] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 29
    [ 8062.210260] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 40
    [ 8062.210283] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 29
    [ 8062.225554] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 44
    [ 8062.225577] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 29
    [ 8062.242007] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 47
    [ 8062.242030] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 28
    [ 8062.260576] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 50
    [ 8062.260598] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 28
    [ 8062.275670] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 54
    [ 8062.275693] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 27
    [ 8062.292031] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 57
    [ 8062.292053] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 27
    [ 8062.310856] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 60
    [ 8062.310879] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 27
    [ 8062.328084] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 64
    [ 8062.328107] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 26
    [ 8062.343660] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 67
    [ 8062.343683] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 26
    [ 8062.359139] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 70
    [ 8062.359162] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 25
    [ 8062.392392] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 72
    [ 8062.392416] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 25
    [ 8062.408633] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 73
    [ 8062.408656] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 25
    Click to expand...
    Click to collapse

    The screen brightness starts at so high density and gradually decreases to low value (from 100 to 73) and when I take kmsg log while I open my device i found that
    <4>[96652.836489] 116D
    <4>[96652.976105] 116U
    <4>[96653.221964] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 163
    <4>[96653.453635] [BACKLIGHT] ktd253b_backlight_update_status ==> user_intensity : 163
    <4>[96653.453648] [BACKLIGHT] ktd259b_backlight_update_status ==> tune_level : 16
    Click to expand...
    Click to collapse
    so if look at the density values you would see a huge difference between the 2 devices. I assume that might be a kernel issue
    I've created this thread so that all further discussions would be here and If there's something to test you guys post the results here .
    View

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