With acpi enabled (I guess) I can't change my brightness using the fn-keys on my HP ProBook 4510s (VC207EA) with an ATI chip based card. Fix: Patch attached with submission follows:
Responsible Changed From-To: freebsd-i386->freebsd-acpi Assign to ACPI team.
The brightness change part of acpi-video is based on ACPI specification 4.0 paragpraph B.7 Maybe the notebook doesn't support it. The acpidump -dt may help. Also, it's necesarry to compile kernel with ACPI_DEBUG, then setup debug messages in loadr.conf, then check the BIOS will generate the required notifications. Dan
Short summary for PR/145306: I asked the David to turn on ACPI debugging. There are some notification (so we know we got debugging output properly) but none of them are related to brightness keys. David DEMELIER wrote: >>> I added them and I got a big output in dmesg but still no message when pressing fn-keys. > No message at all, like I didn't do anything Then no good news. I can't help you. Your BIOS doesn't create the notification required by ACPI specification section B.7 Your's acpidump show that the notification may be sent, but we know the prerequisites that's need to be fulfilled. It may be a initialisation of something or so. If you have older than lates version of system BIOS (e.g. F.12 revision) the upgrade may help: http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareIndex.jsp?lang=en&cc=us&prodNameId=3934829&prodTypeId=321957&prodSeriesId=3934828&swLang=13&taskId=135&swEnvOID=4056#120 May be someone smarter may help better to you. You should save output of: 1. acpidump -dt 2. devinfo -vr 3. dmesg after boot with ACPI debugging turned on somewhere then send URL to the PR so anyone can read it. I'm sorry I have no better response to you ... Dan
Hi, I have a HP Probook 4310s and the same problem. On linux, I can change the brightness using fn-keys. I found a linux bug-report about this problem: https://bugzilla.kernel.org/show_bug.cgi?id=15054 Thank you. [bugmeister note: moved to http://people.freebsd.org/~linimon/tmp/hp-probook.asl due to immense size.]
Did you update your firmware? Do you have acpi_hp.ko loaded? I see that brightness is still not implemented here but you may find other useful things. Please see - man 4 acpi_hp for more details. You may also have better luck with newer version of FreeBSD :-) Thanks, Hiren
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