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From: bugzilla-daemon@bugzilla.kernel.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 203439] amdgpu: [REG 4.20 -> 5.0] Brightness minimum level is too high
Date: Fri, 26 Apr 2019 16:58:41 +0000	[thread overview]
Message-ID: <bug-203439-2300-bPdaqSW6QW@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-203439-2300@https.bugzilla.kernel.org/>

https://bugzilla.kernel.org/show_bug.cgi?id=203439

Nicholas Kazlauskas (nicholas.kazlauskas@amd.com) changed:

           What    |Removed                     |Added
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                 CC|                            |nicholas.kazlauskas@amd.com

--- Comment #2 from Nicholas Kazlauskas (nicholas.kazlauskas@amd.com) ---
At some point we started reading the ACPI backlight caps to respect the actual
backlight range for the panel. We map the backlight level specified by the user
from 0-255 to that range.

In the case where the caps aren't valid we use a default minimum brightness
that's non-zero since some panels will flash when the backlight level goes to
zero.

While I don't know offhand the reasoning for 12 specifically I also don't think
we'll be dropping it back down to zero.

Wouldn't DPMS off give you what you want in this case?

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  parent reply	other threads:[~2019-04-26 16:58 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-26 16:39 [Bug 203439] New: amdgpu: [REG 4.20 -> 5.0] Brightness minimum level is too high bugzilla-daemon
2019-04-26 16:41 ` [Bug 203439] " bugzilla-daemon
2019-04-26 16:58 ` bugzilla-daemon [this message]
2019-04-26 17:59 ` bugzilla-daemon
2020-10-03 11:42 ` bugzilla-daemon
2020-10-03 11:45 ` bugzilla-daemon
2021-11-24  2:44 ` bugzilla-daemon

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