[Q] Nook color banding? - Nook Color General

Hey guys just installed cm7.0.3 on my new nook color last night. I noticed today theres some pretty bad banding on it. For instance, if I open up the stock android calculator app, the buttons that have numbers on them have a clear distinct line about halfway down where as on my phone (nexus 1) it's just a smooth gradient. Is there a way to fix this? It's also very noticeable on the music widget

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Banding on images/backgrounds with gradients?

So, maybe its just me, but i notice that my nook, on any rom, does not seem to do well when displaying images that have subtle gradients. i have attached an image that i wanted to use for my background - it looks great on screen, but like crap on the nook. Anyone else notice this? I love the screen in general, but looking at that image makes it feel like i am using an 8-bit screen...
Divine_Madcat said:
So, maybe its just me, but i notice that my nook, on any rom, does not seem to do well when displaying images that have subtle gradients. i have attached an image that i wanted to use for my background - it looks great on screen, but like crap on the nook. Anyone else notice this? I love the screen in general, but looking at that image makes it feel like i am using an 8-bit screen...
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Click to collapse
I've found it can display images fine, but that when setting it as the wallpaper it messes up the gradient and also tends to make the image blurry, as though its changing the resolution (despite the image being 1200x1024 or whatever its suppose to be(possibly 1024x1200)
Color Banding with live wallpapers enabled
Hijacking this thread.
Is anyone else noticing color banding on NC with live wallpapers enabled?
For example, take a look at your desktop with the two settings:
1. Livewallpaper + analog clock widget
2. Regular wallpaper + analog clock widget
The clock displays horrible banding in test case #1. I tested this on 7.0.3. stable and several nightlies since. I've see a few posts on this in the other device forums but most of them seem to be issues with the supported bit depth of the actual screen itself or wallpapers in general so I wasn't sure if they were applicable.
Is this an Android issue or an issue with the rom? Something else?
MattJ951 said:
I've found it can display images fine, but that when setting it as the wallpaper it messes up...
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Click to collapse
I recommend Wallpaper Set and Save, free in the Market, to fix that problem.
https://market.android.com/details?id=com.android.wallpapersetandsave
It's a funny old app, made for Cupcake I think and hasn't been changed since then. The UI is small and kind of odd looking. Changing the default settings won't stick on my Nook Color. It really wants your wallpaper to be in SDCard/wallpapers. So it barely works, but it does make wallpaper look better.
Thanks for the suggestion. I've tried that app before but it looked like it was only for regular wallpapers (where I'm not really seeing the banding)? That or I'm dense and overlooking something.
Also where are the stock wallpapers normally stored on cm7 install?
Sent from my HTC Vision using Tapatalk
You know, there were a lot of people who noticed banding on the HD2 roms, and it did seem to vary between various roms. I never really noticed it (perhaps I used the good roms), so didn't follow it much, and couldn't say if there was a fix. But, there should be many threads on it in the HD2 android section.
I've also noticed pretty severe banding in gradients for both jpeg and png images.
Divine_Madcat said:
So, maybe its just me, but i notice that my nook, on any rom, does not seem to do well when displaying images that have subtle gradients. i have attached an image that i wanted to use for my background - it looks great on screen, but like crap on the nook. Anyone else notice this? I love the screen in general, but looking at that image makes it feel like i am using an 8-bit screen...
Click to expand...
Click to collapse
As said, use something besides Gallery and it'll look fine. I use Wall Switcher and have some 20 jpg's in a directory and it switches 'em every 15 minutes, but there are lots of options.
It's not the NC, the ROM... it's the app you're using to set the background.
Just to clarify, the entire desktop starts exhibiting banding (icons, Widgets) and not just the desktop background. Almost as if the os is switching color depth. Can you guys reproduce this on your cm7 installs? Maybe I need to post screens or something.
This ONLY happens when I select a livewallpaper. Regular wallpapers dont affect the widgets and desktop icons like this. If its a matter or how im setting the live wallpaper, How do you set a live wallpaper using gallery or any other apps? What directory are they stored? Thanks.
Sent from my Nook Color
7 replies and not one person mentions that the nook's screen is only 16 bit... of course there will be gradients, its a small issue and when I noticed it with a space themed background went ''meh'', and used a different one.
Kokanee483 said:
7 replies and not one person mentions that the nook's screen is only 16 bit... of course there will be gradients, its a small issue and when I noticed it with a space themed background went ''meh'', and used a different one.
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Click to collapse
Ah. Well that would make more sense. I always thought the display was 24-bit because people are always comparing it to the Ipad screen. The clock does look distractingly bad though haha...maybe I'm just anal.
Just added some screenshots using the Grass Live Wallpaper versus one of the stock CM7 ones. For posterity.
Go to the app store and download "Large Image Viewer" it will solve all your problems. The nook color screen is an IPS display, the same as the ipad and much better than other andriod tablets. Large Image Viewer is a very fast hi res viewer and no, I am in no way affiated with them.
Tom
tommewborn said:
Go to the app store and download "Large Image Viewer" it will solve all your problems. The nook color screen is an IPS display, the same as the ipad and much better than other andriod tablets. Large Image Viewer is a very fast hi res viewer and no, I am in no way affiated with them.
Tom
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Errr...thanks but how is that related to this thread? haha
Dalingrin's OC kernels are 16-bit, stock is 24-bit. It's about that simple.
I campaigned for a way to switch live, and at one point he considered just such a kernel mod but I don't think it ever went anywhere.
Rodney
rhester72 said:
Dalingrin's OC kernels are 16-bit, stock is 24-bit. It's about that simple.
I campaigned for a way to switch live, and at one point he considered just such a kernel mod but I don't think it ever went anywhere.
Rodney
Click to expand...
Click to collapse
Finally some info related to my question. Going back to the stock kernel fixed the banding issue with live wallpapers. Thank you! If anyone else is interested...details are in the OC Kernel thread (search banding, color bit depth, etc.). Wish this was explicitly stated in the OC kernel OP.
Live Wallpaper Banding
Divine_Madcat said:
So, maybe its just me, but i notice that my nook, on any rom, does not seem to do well when displaying images that have subtle gradients. i have attached an image that i wanted to use for my background - it looks great on screen, but like crap on the nook. Anyone else notice this? I love the screen in general, but looking at that image makes it feel like i am using an 8-bit screen...
Click to expand...
Click to collapse
I'm noticing the same thing. The screen seems to handle gradients in regular wallpapers fine, but gradients in Live Wallpapers look horrible. Like someone stated it's like it's changing bit-depth. I'm on a stock, totally virgin Nook Color. Does anyone know how to work around this? I'm building Live Wallpapers and what looks fine on other devices looks terrible on the Color.

[Q] Weatherbug Weather Alerts not visiable

Top of the day to you all,
Shortly after rooting my Nook I had to install weatherbug and over all the program works as expected except for one small problem. When I go to read a weather alert the screen appears as black and I am able to see the alert title, however the actual text underneath I can't read. I tried to change the text color but still can't read it. Any suggestions?
I found My-Cast weather lite works better than wb

[Q] Color Calibration on ICS?

Has anyone figured out how to adjust the screen colors under ICS yet? I used to use Chainfire3D's Nightmode to adjust the colors in GB, but that no longer works in ICS.
And before anyone asks "why?", I am a photographer and I view my photos on my TP. By default the colors are way off (~7200k white point).
Chainfire3D allowed me to adjust the colors where they were relatively close to 6500k across the board.
On my Epic 4g I use Voodoo Color, which is obviously for Galaxy S series devices only.
Maybe something like this could be ported?
Woohoo, I can confirm that Night Mode is working again under 4.0.4 and I am quite happy to have a color calibrated Touchpad again!
The only problem is that it also applies the adjustments to the recents thumbnails, thus doubling the correction (this would also be true for any screenshots).

ICS white contact list Battery Drain

Hi
Since going to ICS CM9 I noticed that a lot of the OS is white instead of black, particularly the contact list and text message screens which we use a lot. This surely must be draining the battery a lot. Is there a way to change it back to black ie invert it?
Also the 2nd screen which comes up when reading a long SMS message is not present in ICS (the large white font on black background). I miss that. HAs anyone tried getting that back?
I don't want to go back to gingerbread but its looking like I might have to!
Inverted google apps, search for it, or you can get a theme like blue infinitum.

[Q] Lollipop Update - White Button and Menu Background Color?

Sorry if this has been asked but I Googled and couldn't find much (I suspect because of the keywords- it wants to show me how to change the background or how it's available in white)... but, after the 5.0 update, there is one "annoyance" setting that I'm hoping can be reverted. Everything is now white instead of black (menus, app drawer, etc.). Can this be reverted to the darker theme easily?
As far as I know there is no way to revert to the "black theme".
Oddly, G's news app has a dark theme built in, but thats the only one I can find

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