Re: NetBSD 9.3 amd64 won't turn off display backlight

[Damien Boureille <damien.boureille%gmail.com@localhost>]

Thanks. I tried that, however this has dependencies on X, and even then, it wouldn't work.
I also tried blacklisting i915drmdkms, booting from both BIOS and UEFI, and using genfb instead of acpivga.

So far the best I found is to unplug the LVDS cable from the motherboard and use an external display instead. It could be more handy but at least I can turn off the display now.

D.B.

> On 17 Jan 2023, at 23:13, RVP <rvp%SDF.ORG@localhost> wrote:
> 
> On Thu, 29 Dec 2022, Damien Boureille wrote:
> 
>> I'm running NetBSD 9.3-amd64 GENERIC on a Dell Precision M4600 (Sandy Bridge) mobile workstation, used as a server.
>> 
>> Closing the lid will not turn off the backlight, which conducts and builds up heat inside the case.
>> [...]
>> I'm using an i915 chipset:
>> 
>> # pcictl pci0 list
>> 000:00:0: Intel Sandy Bridge (mobile) Host Bridge (host bridge, revision 0x09)
>> 000:02:0: Intel Sandy Bridge (mobile) GT2+ Integrated Graphics Device (VGA display, revision 0x09)
>> (...)
>> 
> 
> Since you have an Intel card, you can install the `intel_backlight'
> package, and call it in the `/etc/powerd/scripts/lid_switch' script.
> 
> -RVP
>