Re: [Regression] ACPI: video: Change how we determine if brightness key-presses are handled #forregzbot

[Thorsten Leemhuis <regressions@leemhuis.info>]

TWIMC: this mail is primarily send for documentation purposes and for
regzbot, my Linux kernel regression tracking bot. These mails usually
contain '#forregzbot' in the subject, to make them easy to spot and filter.

On 13.07.22 07:54, Thorsten Leemhuis wrote:
> [CCing Hans, who authored 3a0cf7ab8d ("ACPI: video: Change how we
> determine if brightness key-presses are handled")]
> 
> On 13.07.22 07:27, Ben Greening wrote:
>> (resending because of HTML formatting)
>> Hi, I'm on Arch Linux and upgraded from kernel 5.18.9.arch1-1 to
>> 5.18.10.arch1-1. The brightness keys don't work as well as before.
>> Gnome had 20 degrees of brightness, now it's 10, and Xfce went from 10
>> to 5. Additionally, on Gnome the brightness keys are a little slow to
>> respond and there's a bit of a stutter. Don't know why Xfce doesn't
>> stutter, but halving the degrees of brightness for both makes me
>> wonder if each press is being counted twice.
>>
>> Reverting commit 3a0cf7ab8d in acpi_video.c and rebuilding
>> 5.18.10.arch1-1 fixed it.
> 
> BTW, in case someone gets slightly confused like I was here:
> 3a0cf7ab8d is a mainline commit that was backported to 5.18.y as
> 1ed81b354d8c recently.
> 
>> The laptop is a Dell Inspiron n4010 and I use "acpi_backlight=video"
>> to make the brightness keys work. Please let me know if there's any
>> hardware info you need.
>>
>> #regzbot introduced: 3a0cf7ab8d

Sorry, regzbot got confused by something, so let's mark this as resolved
manually:

#regzbot fixed-by: 5ad26161a371e4