cros login screen avatars/photos are heavily saturated |
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Issue descriptionUserAgent: Mozilla/5.0 (X11; CrOS x86_64 10575.22.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.26 Safari/537.36 Platform: 10575.22.0 (Official Build) dev-channel eve Steps to reproduce the problem: 1. boot up (or log out of) a cros device 2. add an extra user or two to the device 3. highlight one of the accounts What is the expected behavior? The photo for the selected account should be displayed at natural saturation levels and less saturated when de-selected. What went wrong? The photo for the selected account has the saturation levels bumped up from the natural de-selected levels. Did this work before? N/A Chrome version: 67.0.3396.26 Channel: beta OS Version: 10575.22.0 Flash Version:
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May 11 2018
+eddych I believe this is due to CABC
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Jul 9
eddych@ does not seem to be available, should we find another owner?
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Jul 10
Sorry that I missed this bug. Yes, the phenomena is related to CABC. When the majority of screen is dark, we will dim the backlight to save power, resulting in very un-saturated colors, and when screen content gets brighter (e.g. when account is selected) the backlight brightness gets bumped up and the screen content saturation will appear to increase a lot. We have a separate issue that is related to screen flicker caused by CABC. The fix will solve both flicker and un-saturated color, and is rolled out to dogfooders. https://bugs.chromium.org/p/chromium/issues/detail?id=750456#c25
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Nov 21
Confirmed that this is due to CABC in the platform and not a UI issue. |
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Comment 1 by ovanieva@chromium.org
, May 11 2018Owner: zalcorn@google.com
Status: Assigned (was: Unconfirmed)