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|Wallpaper Causes Crashes And Bootloops On Samsung Devices by KrazyDave16(m): 10:43am On Jun 06|
There's been an uproar in the Samsung community, and the recent one caused by a wallpaper. Seems unrealistic I know but since Samsung has been having a pretty bad year, from the Exynos movement to complaints about the screen.
Twitter user and Samsung leakster @universeIce tweeted a warning about a certain wallpaper which caused his Samsung device to crash and bootloop. Unfortunately, most users didn't take his warning seriously and ended up using said image as a wallpaper. Their reactions... You get the idea.
Digging through some sites and sources, a reddit user xanaxdroid_ found out why the image caused devices to crash. The crash was caused because the image had the embedded color profile Google/Skia/E3CADAB7BD3DE5E3436874D2A9DEE126, which he assumed was encoded incorrectly to crash systemui since Android uses Skia in their frameworks. What this means is the code in SystemUI is trying to read the exposure of the photo. The histogram code can't read the exposure correctly which causes it to crash. In layman's terms, the color profile used on the image is RGB as opposed to sRGB that Android uses. Normally all images are supposed to be converted to sRGB unless specified by the developer but in this case there's a rare bug that calculates the luminance of each pixel of the image to exceed 255 and the image luminance is 257.
He went on to remove the color profile and has since then not experienced any crashes whatsoever. Several reddit users pointed out that the color profile can be removed from the image or any image that has a color profile wrongly implemented by using Photoshop, Gimp, Ms paint or what I call the best solution for the non-tech community, screenshot.
Should you ever get curious to try this - no I'm not dropping links to the bugged image - the only solution apart from a hard reset is to be quick in changing your wallpaper. There's a 10-second window from when you gain control of your phone to change the wallpaper to a bug free one. Unless you're the Flash, a renowned keyboard warrior or you have the gallery icon on your home screen a hard reset/factory reset is the only way around this.
With this recent development, Google is aware of this issue and are conducting it's own tests to see if they can fix the issue and determine if it might be an exploit. For your information, a single pixel or two in this case is what's causing the whole issue, not the image itself.
Should you want the full works, drop by on XDA.
Update 1 - it affects some devices apart from Samsung.
Update 2 - Android 10 below are affected. Though not all devices are but I advise you not to play Russian roulette with your phone. LineageOS devs dropped a patch for this problem on Gerrit. Links should be available on their telegram group.
Sources - XDA, Reddit, Twitter
*Attached a screenshot of the image of you want to use*
|Re: Wallpaper Causes Crashes And Bootloops On Samsung Devices by falcon01: 11:00am On Jun 06|
This one wont crash it because it has been altered. I did it on an s20 ultra and it crashed
|Re: Wallpaper Causes Crashes And Bootloops On Samsung Devices by Victr101(m): 11:56am On Jun 06|
it's the real image that crashes Sammy phones. this is a screenshot
|Re: Wallpaper Causes Crashes And Bootloops On Samsung Devices by OneKinGuy(m): 1:22pm On Jun 06|
It crashes on any phone that's runs Android 10.
Here is the original wallpaper incase you wanna try it.
Here is the reason
|Re: Wallpaper Causes Crashes And Bootloops On Samsung Devices by sunshineV: 5:53pm On Jun 06|
u see am? and all of una dey shout la click la bend
|Re: Wallpaper Causes Crashes And Bootloops On Samsung Devices by ahmemmygrey(m): 5:57pm On Jun 06|
La click la true
|Re: Wallpaper Causes Crashes And Bootloops On Samsung Devices by yusfatedeeprof(m): 6:11pm On Jun 06|
Who would have thought a WALLPAPER will crash "almighty" SAMSUNG devices
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