16bit banding bug after NoDo

[VonCrisp]

Has anyone else experienced the banding 16bit bug after updating to NoDo?

More info here: http://wmpoweruser.com/has-the-htc-update-caused-some-windows-phones-to-go-16-bit/

These constant issues are getting to me.

I have an Omnia 7!

To see if you have banding you can install WP Bench of the market place > Display > Gradient test (If transitions are not smooth = banding)

For the Fix please see below:

http://www.youtube.com/watch?v=Z45p1-0822Y
(Thanks for the link: Saijo)

Please note that the registry settings show minor performance differences depending on the phone model used. (Please read the thread for more info)

Warning: A known bug after changing the registry entries is the Red Screen Bug

Current Mango demo units still show banding (24/5/11)

 

[bennyj71]

Has anyone else experienced the banding 16bit bug after updating to NoDo?

More info here: http://wmpoweruser.com/has-the-htc-update-caused-some-windows-phones-to-go-16-bit/

These constant issues are getting to me.

I have an Omnia 7!

I don't have the issue. First thing first, did you use a hack to get NoDo?

 

[thenewperson]

I experienced this issue before and after NoDo unfortunately.

 

[DaFlake]

I have banding on my Focus. I updated to NoDo using the count method.

Sent from my SGH-i917 using XDA Windows Phone 7 App

 

[VonCrisp]

I don't have the issue. First thing first, did you use a hack to get NoDo?

I unbranded my DTM JJ6 rom with the Samsung unbrander to get pre Nodo, then 5 sec disconnection trick to get NoDo.


My firmware, boot version didnt change when updating to NoDo:

pda i8700XXJJ6
phone i8700XXJJ6
csc i8700DTMJJ6

OS: 7.0.7390.0

firmware 2424.10.10.6
hw 3.15.0.4
radio 2424.10.10.6
hw 0.0.0.800
boot 4.10.1.9
soc 0.36.2.0

I will try to use the back up created by Zune to revert back to pre NoDo tonight to see if it will help.

Dont know what the cause of this issue is.

 

[amtrakcn]

Yes I do have this issue. I think this is universal after Nodo update.

I found a soln confirmed for SAMSUNG DEVICES by changing the following keys:

HKLM\Drivers\Display\Primary\PrimBPP dword 32
HKLM\Drivers\Display\Primary\bpp dword 32
HKLM\Drivers\Display\Primary\PanelBPP dword 32

Then reboot.
There will be a slight performance degrade after change.


BTW Originally the color in Picture hub is fine. The preview mode is 16bit but if you look at it at original size it's 32bit.

 

[cbebop7]

isnt this an issue with all SAMOLEDs in general? I am still on pre pre NoDo (7004) and have this issue. ATT Samsung Focus

 

[amtrakcn]

isnt this an issue with all SAMOLEDs in general? I am still on pre pre NoDo (7004) and have this issue. ATT Samsung Focus

This is not related to the screen material, it's some software configuration.

 

[webwalk®]

Yes I do have this issue. I think this is universal after Nodo update.

I found a soln by changing the following keys:

HKLM\Drivers\Display\Primary\bpp dword 32
HKLM\Drivers\Display\Primary\PanelBPP dword 32

Then reboot.


BTW Originally the color in Picture hub is fine. The preview mode is 16bit but if you look at it at original size it's 32bit.

it actually depends on your bootloader, or the firmware that comes with the bootloader.

every phone with bootloader above 1.26 should have the gradient color issue.

TMODE 1.25 no issue
HTC EU 1.26 no issue

HTC EU 1.28 issue
HTC EU 1.30 issue

i didnt try other versions..

now the NODO update by zune didnt include updated bootloader/firmware
so if u had bootloader 1.26 or lower and updated your phone to nodo (os version 7390) then this wont affect your bootloader.

the htc update seems to update the bootloader, while i wish they would send the updated bootloader to mozart's, they color brand throphys and HD7 xD

1.30 bootloader on mozart has autofocus (i want that!)

great job on the fix im goin to try it....

 

[tiny17]

I can see it on my HTC Arrive.

 

[amtrakcn]

Or maybe it's Firmware/System mixed issue. Samsung, LG and HTC (DVP not sure) phones all have such problem.

it actually depends on your bootloader, or the firmware that comes with the bootloader.

every phone with bootloader above 1.26 should have the gradient color issue.

TMODE 1.25 no issue
HTC EU 1.26 no issue

HTC EU 1.28 issue
HTC EU 1.30 issue

i didnt try other versions..

now the NODO update by zune didnt include updated bootloader/firmware
so if u had bootloader 1.26 or lower and updated your phone to nodo (os version 7390) then this wont affect your bootloader.

the htc update seems to update the bootloader, while i wish they would send the updated bootloader to mozart's, they color brand throphys and HD7 xD

1.30 bootloader on mozart has autofocus (i want that!)

great job on the fix im goin to try it....

 

[ScottSUmmers]

Tried the registry fix on my HTC arrive and no effect

Bootloader is 1.25.230506
firmware: 2305.06

it actually depends on your bootloader, or the firmware that comes with the bootloader.

every phone with bootloader above 1.26 should have the gradient color issue.

TMODE 1.25 no issue
HTC EU 1.26 no issue

HTC EU 1.28 issue
HTC EU 1.30 issue

i didnt try other versions..

now the NODO update by zune didnt include updated bootloader/firmware
so if u had bootloader 1.26 or lower and updated your phone to nodo (os version 7390) then this wont affect your bootloader.

the htc update seems to update the bootloader, while i wish they would send the updated bootloader to mozart's, they color brand throphys and HD7 xD

1.30 bootloader on mozart has autofocus (i want that!)

great job on the fix im goin to try it....

 

[amtrakcn]

Tried the registry fix on my HTC arrive and no effect

Bootloader is 1.25.230506
firmware: 2305.06

The registry fix only applies to your home screen, lock screen and apps.

The internal browser rendering engine (IE, Email) will stay 16bit, which looks bad.

 

[ScottSUmmers]

The registry fix only applies to your home screen, lock screen and apps.

The internal browser rendering engine (IE, Email) will stay 16bit, which looks bad.

Don't know what to tell ya. I applied the value of 32 to every value that referenced BPP. Still no change. If HTC put a 16-bit display in my phone I'm not happy because everything in a Google search says this phone should be 24-bit.

 

[amtrakcn]

Don't know what to tell ya. I applied the value of 32 to every value that referenced BPP. Still no change. If HTC put a 16-bit display in my phone I'm not happy because everything in a Google search says this phone should be 24-bit.

Did you reboot after change?
Also how did you evaluate the color? Directly go to the page will always see the image banded...

 

[tiny17]

The registry fix only applies to your home screen, lock screen and apps.

The internal browser rendering engine (IE, Email) will stay 16bit, which looks bad.

Also on HTC Arrive. Applied registry fix and it had no effect on the above.

 

[amtrakcn]

Also on HTC Arrive. Applied registry fix and it had no effect on the above.

Maybe that only works on Samsung devices? I will modify the post.

 

[ScottSUmmers]

Did you reboot after change?
Also how did you evaluate the color? Directly go to the page will always see the image banded...

yup rebooted each and every time i made a change. I went straight to my pictures hub and lock screen. no change. I even used the picture of the chick on the wmpoweruser blog posting.

 

[amtrakcn]

yup rebooted each and every time i made a change. I went straight to my pictures hub and lock screen. no change. I even used the picture of the chick on the wmpoweruser blog posting.

So it won't work on HTC phones
I applied this on my Focus and the color is fine now. Just the animations are slightly less fluid.

 

[ScottSUmmers]

So it won't work on HTC phones
I applied this on my Focus and the color is fine now. Just the animations are slightly less fluid.

Yeah I guess not. Thanks for the help. I guess I'll just have to hit up HTC to see what's the deal with that