Date: Thu, 9 Nov 2023 13:15:34 -0600 From: Jason Bacon <bacon4000@gmail.com> To: Cy Schubert <Cy.Schubert@cschubert.com>, Emmanuel Vadot <manu@bidouilliste.com> Cc: "Dr. Amr Osman" <dr3mro@gmail.com>, freebsd-hackers@freebsd.org Subject: Re: Brightness 100% when connect or disconnect charger Message-ID: <745ddec4-e2eb-48a6-a903-33821e80d73a@gmail.com> In-Reply-To: <20231109161317.2F063245@slippy.cwsent.com> References: <CAEYFr1DV%2BHpBpUX9gs4CCM887aJnJybJMozPct6X=kFgw8g_ZQ@mail.gmail.com> <20231109091931.983f45f8fad4305569faddcb@bidouilliste.com> <20231109161317.2F063245@slippy.cwsent.com>
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On 11/9/23 10:13, Cy Schubert wrote: > In message <20231109091931.983f45f8fad4305569faddcb@bidouilliste.com>, > Emmanuel > Vadot writes: >> On Wed, 8 Nov 2023 21:57:21 +0200 >> "Dr. Amr Osman" <dr3mro@gmail.com> wrote: >> >>> Hello, >>> I have installed freeBSD 14rc4 on Lenovo Thinkpad x270 and xfce desktop and >>> when I >>> 1) connect the charger >>> 2) disconnect the charger >>> 3) resume from suspend >>> The LCD brightness is 100% which is really disturbing specially when I am >>> in dark room >> >> I don't have the issue on my Thinkpad X390 with suspend/resume but I >> do have it with the charger. >> I'm pretty sure that it's a hardware thing and we can't do anything >> about it without having some framework for sensors that can handle >> power supply connection/disconnection and events. >> >>> hw.acpi.video.lcd0.economy: 20 >>> hw.acpi.video.lcd0.fullpower: 30 >>> I have loaded acpi_video and acpi_ibm >>> and if I tried to adjust brightness it goes suddenly from 100 to 20 if I >>> press fn +f5/f6 >> >> You shouldn't need to load acpi_video on modern laptop, backlight(9) >> and backlight(8) is enought (if you have drm loaded). > > What I'm about to discuss is not a backlight issue but a unplug the power > supply and plug it back in issue on my Acer 4752. > > When 9a4bc5208fad (acpica: Import ACPICA 20221020) was committed, WOL no > longer worked on my Acer 4752. > > Howerver after I unplugged it from the power supply and plugged it back in, > only then would it recognize the WOL packet. This was a regression in > 9a4bc5208fad. (I did create a local patch to revert part of 9a4bc5208fad.) > > Probably not a FreeBSD issue per se but acpica contrib issue. > > Just to be thorough, is the BIOS fully up-to-date? -- Life is a game. Play hard. Play fair. Have fun.
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