On Wed, May 23, 2012 at 03:19:14PM -0700, Kevin Oberman wrote: > On Wed, May 23, 2012 at 8:13 AM, Natacha Porté <nat...@instinctive.eu> wrote: > > Hello, > > > > I happen to be the owner of a brand new Lenovo Thinkpad X220. From a > > recent thread here I gather it almost works with FreeBSD, and the > > remaining problems are screen brightness and screen left unpowered at > > resume. Is that right? > > > > So my question is, how can I help make progress in any of these area? > > (though I admit I'm more interested in having the brightness problem > > solved than the resume one) > > > > I don't know anything about ACPI or about FreeBSD or Linux internals, > > but I'm quite proficient in C and somewhat used to navigate in unknown > > huge code bases. > > > > So I guess the first steps to help would be to first learn stuff. > > > > However I don't have much time available. I guess FreeBSD 11 would reach > > end-of-life before I could reach a level of understanding I find > > satisfying (though I admit I have high standards there), so I would have > > to prioritize. So my question is rather *what* should I learn to provide > > help as soon as possible? > > > > For example, if the brightness issue is just a matter of extracting the > > right numbers from linux kernel code and plug them into FreeBSD, I > > probably won't need to learn anything more about ACPI than what I would > > gather looking at the code. I guess if it was that simple someone would > > have already done it, but that illustrate well my point about > > prioritizing learning. > > > > Or is the barrier of entry too high for me to be of any use? > > If it has not been committed, the minor fix to make acpi_ibm work on > modern ThinkPads needs to be committed. Once done, the issues > mentioned need to be addressed.This includes getting brightness to be > setable from both the keypad hot-keys and from applications. ATM, I > can set the brightness, but making the hot-keys work will require the > ability to extract the current level so that it may be adjusted > plus/minus one. > > The other issue is volume control keys don't work. I suspect it will > be similar to brightness, but I don't know just how to figure it out. > > I should also mention that I don't have an X220. I have a T520, but > the issues seem to be identical, so fixing one will probably fix a lot > of recent ThinkPads.
About the key: Did you try loading "acpi_ibm", "sysctl dev.acpi_ibm.0.events=1", "cat /var/run/devd.pipe" and then press the keys. Does anything show up?
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