Date: Fri, 11 Jun 2010 02:27:37 +0200 From: Dan Lukes <dan@obluda.cz> To: David DEMELIER <demelier.david@gmail.com> Cc: freebsd-mobile@freebsd.org Subject: Re: kern/145306: [acpi]: Can't change brightness on HP ProBook 4510s Message-ID: <4C1182F9.1040608@obluda.cz> In-Reply-To: <AANLkTiljw3RrWR53HibhZb0R1V0D0mJL3lIvlRu9gCM_@mail.gmail.com> References: <201004031619.o33GJBHd043318@freefall.freebsd.org> <4BB868E3.50206@obluda.cz> <o2ub3954bba1004040824m3e888839o47ca4417be2ffe06@mail.gmail.com> <4BB8D649.4020608@obluda.cz> <k2wb3954bba1004041450s24edc3efq1a3a887e7319ccc@mail.gmail.com> <4BB98CB0.6090108@obluda.cz> <j2hb3954bba1004050103wca765d9aua042fca0f014a268@mail.gmail.com> <4BBA0AEE.7030606@obluda.cz> <m2lb3954bba1004050922r73f2ba9fie4c9745addd80f08@mail.gmail.com> <4BBA10A0.9050700@obluda.cz> <h2qb3954bba1004050938ta6097919l97011d0cffc8a284@mail.gmail.com> <4BBA1BC1.1080002@obluda.cz> <AANLkTiljw3RrWR53HibhZb0R1V0D0mJL3lIvlRu9gCM_@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
David DEMELIER wrote: >>>>> I got a big output in dmesg but still no message when pressing fn-keys. >> Then no good news. I can't help you. Your BIOS doesn't create the >> notification required by ACPI specification section B.7 > Just one information I noticed today : when booting without ACPI > enabled (it does not boot it stops at a certain point (can't > remember)) I can change the brightness With no ACPI the brightness may remain driven by BIOS. With ACPI the responsibility may be switched to OS, but the interface doesn't follow ACPI specification section B.7. I assume there is a proprietary interface to do it. Or proprietary initialization that turn on standard interface, at least. > maybe there is a problem between freebsd ACPI <-> the laptop screen Maybe. You got some notifications but not those related to brightness keys. I doesn't assume there is problem with receiving one type of ACPI notification while other can be received with no problem ... Dan
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4C1182F9.1040608>