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Control intel backlight on FreeBSD
License: Other
This project forked from grembo/intel_backlight_fbsd
Control intel backlight on FreeBSD
License: Other
Would love to try this package out.
The backlight modulation frequency chosen by FreeBSD is unlucky in my case, as the CCFL transformer makes the laptop monitor casing vibrate rather loudly and most certainly annoyingly. So I am looking for a BSD equivalent to changing the modulation frequency as described here.
Unfortunately, intel_backlight instantly segfaults. "'intel_backlight' terminated by signal SIGSEGV (Address boundary error)"
Here is a coredump, of intel_backlight, compiled from ports with -DWITH_DEBUG:
intel_backlight.core.gz
This is another low-level system package segfaulting on FreeBSD 13: lonkamikaze/powerdxx#17
Hi all!
I recently bought a new laptop the Lenovo T490 and I'm trying to configure brightness adjustments.
When I run the intel_backlight utility, it reports negative values for me.
Changing the value does change the brightness although any value results in a unreadable "black screen".
I'm running CURRENT on the machine in question.
/home/dries]$ intel_backlight
Current backlight value: -2147483648% (24242/0)
After some googling I found this forum post of a person that has the same issue: https://forums.freebsd.org/threads/freebsd-noob-fighting-brightness-touchpad-intel-driver.66347/
I think the most obvious reason is that my laptop is not supported (Whiskey Lake i5-825U), any chance to get support for this? :-).
In Linux, I use the original version of this tool in order to turn off my Thinkpad X201's backlight. However, the FreeBSD port appears to have an 'offset' of 0.5% applied, preventing the light from ever being turned off. I can only assume this is meant as some sort of safety feature, but I've been unable to find any other means of turning my backlight off. setting min=0
and removing the 0.5 +
on the mathematical operations fixes this. This also brings it closer to the functionality of the original FreeDesktop.org version of the tool.
My fork has fixed this, but it's a sort of sloppy fix and it also allows the use of more precise numbers (with decimal places). I just don't feel comfortable making a pull request with it, because I didn't think of the program as a whole when I made my changes and just made them to get something working quickly. You can still look at the commit, if you want an idea of what I mean.
I was asked if I could port this over to NetBSD.
The obvious answer is yes but, that would require a release tag to patch and build from.
Do you guys have any plans to create a tag for this? Are there any license restrictions to it?
Thanks!
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