Date: Wed, 28 Oct 2015 12:55:54 +0100 From: Jan Bramkamp <crest@rlwinm.de> To: freebsd-acpi@freebsd.org Subject: Re: brightness control stopped working Message-ID: <5630B7CA.4040300@rlwinm.de> In-Reply-To: <86vb9s9eva.fsf@posteo.de> References: <86vb9s9eva.fsf@posteo.de>
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On 27/10/15 22:32, aeuii@posteo.de wrote: > Hello freebsd-acpi@, > > I have lenovo ThinkPad Edge E145 laptop and the LCD brightness control > stopped working somewhere between 10.2-RELEASE and 10.2-RELEASE-p6. > > I used to adjust the brightness using Fn-☼- and Fn-☼+ buttons and it > always worked (during boot, in X, text console). Now, it works only > in the loader, before the system boots. > > I tried alternative methods listed below, but non had any effect. > > Please help! ;) > > Thank you in advance, > Stefan > > > ** acpi_call > > acpi_call -v -p '\VBRU' > > Path: \VBRU > Number of arguments: 0 > ioctl: Device not configured > > no effect Is the acpi_call kernel module loaded? > ** acpi_ibm > > sysctl dev.acpi_ibm.0.lcd_brightness=7 > > values change, but no effect > > > ** acpi_video > > sysctl hw.acpi.video.lcd0.brightness=50 > hw.acpi.video.lcd0.brightness: 50 -> # > > no effect > > > pressing Fn+(sun)+- buttons has no effect, but logs: > > can't evaluate \134_SB_.PCI0.VGA_.LCD_._BQC - AE_NOT_FOUND If the buttons generate events for devd you can execute whatever commands work for you. `cat /var/run/devd.pipe` logs all events consumed by devd from /dev/devctl. If the acpi_ibm module generates events for the function keys the output of said command will log them. The key-value pairs contain all the information needed to write matching event handlers in devd.conf. Did you try xbacklight? The changes between 10.2-RELEASE and 10.2-RELEASE-p6 shouldn't break your backligh controls. However lots of ports changed in that timeframe and maybe one of those changes e.g. a X.org driver update caused your problem.
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