From: bugzilla-daemon@kernel.org
To: platform-driver-x86@vger.kernel.org
Subject: [Bug 214899] ideapad-laptop: brightness hotkeys not working
Date: Mon, 13 Jun 2022 10:30:41 +0000 [thread overview]
Message-ID: <bug-214899-215701-fdkVoT8KsH@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-214899-215701@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=214899
--- Comment #32 from Hans de Goede (jwrdegoede@fedoraproject.org) ---
(In reply to Johannes Penßel from comment #31)
> Thank you for your help!
You're welcome and thank you for your work on this, your APCI debugging skills
are impressive!
> My understanding of ACPI is limited, but my guess would be that for some
> reason, \_SB.PC00.LPCB.EC0._REG gets evaluated before _SB.PC00._INI, thus
> leaving the former with an incorrect value for OSYS. AFAICT, this does not
> look too dissimilar from the issue in the bugzilla thread you linked.
Yes, I believe that that is what is happening too.
Looking at the code I have an idea how to fix this, I'm testing a patch for
this now (to make sure it does not regress things on other hw, or at least on
my laptop).
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next prev parent reply other threads:[~2022-06-13 10:55 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-31 19:28 [Bug 214899] New: ideapad-laptop: platform backlight device not working bugzilla-daemon
2021-11-01 19:35 ` [Bug 214899] " bugzilla-daemon
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2021-11-04 21:22 ` bugzilla-daemon
2021-11-15 14:28 ` bugzilla-daemon
2022-02-17 1:20 ` [Bug 214899] ideapad-laptop: brightness hotkeys " bugzilla-daemon
2022-02-17 1:21 ` bugzilla-daemon
2022-04-12 18:45 ` bugzilla-daemon
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