Work-In-Progress Registry Fix Available for WP7 Color Banding


Windows Phone 7 users started noticing last week that after receiving all available updates, their phones didn’t look quite as pretty as they used to. The updates apparently decreased the bit depth used to display images, downgrading output to 16-bit and resulting in “banding” artifacts appearing in pictures with smooth color gradients. Although it’s not yet accessible to all users, there’s now a WIP fix available for those able to edit their phones’ registry, letting you customize bit depth settings.

The biggest caveat is that you’ll need a developer-unlocked phone in order to make these registry tweaks, and with no ChevronWP7 anymore, many users are going to be out of luck for now. After some experimentation over what values to modify, a group of users on the XDA-Developers forum have found good success with:

HKLMDriversDisplayPrimaryPrimBPP dword 32

HKLMDriversDisplayPrimarybpp dword 32

HKLMDriversDisplayPrimaryPanelBPP dword 24

Those values at the end of each line represent bit depth, changing them back from 16. Some users have noted during their tests modifying these values that pushing things too high can decrease smartphone performance; the updates lowering them seem to have done so in an effort to extract more speed from the devices.

This isn’t a 100% fix, as you may still notice banding in some parts of the OS, but it’s a start. The best option might be to offer a user-configurable display setting for making the adjustments yourself, trading speed for looks. What do you think, Microsoft?

Source: XDA-Developers forum

Via: WMPoweruser

Thanks: Frodo Nu

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About The Author
Stephen Schenck
Stephen has been writing about electronics since 2008, which only serves to frustrate him that he waited so long to combine his love of gadgets and his degree in writing. In his spare time, he collects console and arcade game hardware, is a motorcycle enthusiast, and enjoys trapping blue crabs. Stephen's first mobile device was a 624 MHz Dell Axim X30, which he's convinced is still a viable platform. Stephen longs for a market where phones are sold independently of service, and bandwidth is cheap and plentiful; he's not holding his breath. In the meantime, he devours smartphone news and tries to sort out the juicy bits Read more about Stephen Schenck!