Bug 109232 - Raven Ridge with ABM enabled turns display off erroneously on mostly black colored windows
Summary: Raven Ridge with ABM enabled turns display off erroneously on mostly black co...
Status: NEW
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/AMDgpu (show other bugs)
Version: XOrg git
Hardware: Other All
: medium normal
Assignee: Default DRI bug account
QA Contact:
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Reported: 2019-01-06 17:42 UTC by Samantha McVey
Modified: 2019-03-14 08:09 UTC (History)
4 users (show)

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Attachments
xorg log (42.40 KB, text/plain)
2019-01-06 17:42 UTC, Samantha McVey
no flags Details
dmesg log (191.56 KB, text/plain)
2019-01-06 17:43 UTC, Samantha McVey
no flags Details

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Description Samantha McVey 2019-01-06 17:42:53 UTC
Created attachment 142986 [details]
xorg log

With ABM off and brightness at the minimum (0), the screen is on but low brightness. If you set ABM to 4 and then maximize a black terminal window, the screen will for all intents and purposes turn itself off. When going back to a bright screen it will turn on again. By on and off here I don't mean actually off, but the brightness is almost not visible.

I am using a Lenovo A485
Comment 1 Samantha McVey 2019-01-06 17:43:10 UTC
Created attachment 142987 [details]
dmesg log
Comment 2 Samantha McVey 2019-01-06 18:27:23 UTC
I logged the actual and brightness settings with 1 second delay:

actual: 771 brightness: 0  abm level: 0 
actual: 771 brightness: 0  abm level: 0 
actual: 771 brightness: 0  abm level: 0 
actual: 771 brightness: 0  abm level: 0

ABM is turned to 4

/* Screen is on initially, but */
actual: 593 brightness: 0  abm level: 4 
actual: 428 brightness: 0  abm level: 4
/* About here the screen is basically off */
actual: 368 brightness: 0  abm level: 4
actual: 339 brightness: 0  abm level: 4


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