On Sat, 30 Jun 2012, Mihai Basa wrote: > The following shows up in dmesg output when turning backlight up or down > (same message) on a Thinkpad T430, running Debian kernel package > linux-image-3.4-trunk-amd64, booted using "acpi_backlight=vendor > acpi_osi=Linux" > > [ 104.916804] thinkpad_acpi: unknown possible thermal alarm or keyboard > event received > [ 104.916812] thinkpad_acpi: unhandled HKEY event 0x6050 > [ 104.916816] thinkpad_acpi: please report the conditions when this event > happened to ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx > > > The backlight switching works, but the (Gnome?) on-screen display shows > level 1 of brightness if the command was to increase (irrespective of > current level), or 0 if it was to decrease. More levels of brightness are > available using the above boot options. Hmm? It works?! Can you change it using the sysfs interface? If you can, that means you're telling the SMBIOS firmware to mess directly with the GPU registers behind X.org's/kernel framebuffer's back. I am unsure whether that's a good idea or not. If you cannot change it through the sysfs interface of thinkpad-acpi, it means you should not load any brightness driver (neither ACPI or thinkpad-acpi, you can give it an option to disable just the brightness driver), and let userspace take care of it through X.org, which must be what is being able to change brightness on your thinkpad if the sysfs interface is not operational. -- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkness grind them. In the Land of Redmond where the shadows lie." -- The Silicon Valley Tarot Henrique Holschuh ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ ibm-acpi-devel mailing list ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/ibm-acpi-devel
