On Wed, Apr 14, 2010 at 11:40 AM, Matthew Garrett <mjg59@xxxxxxxxxxxxx> wrote: > On Wed, Apr 14, 2010 at 05:23:22PM +0100, Alan Jenkins wrote: > >> I suggest you contact the ACPI video maintainer, Zhang Rui >> <rui.zhang@xxxxxxxxx>, and attach the output of "dmidecode". The best >> way would probably be to report the problem on bugzilla.kernel.org (on >> the ACPI video driver). Thanks for pointers. Its sometimes difficult to know were to ask for help. I found two bugzilla reports that are related: Mentions exact bug that I'm seeing but doesn't document the acpi_backlight=vendor work around. I've added my information to it: https://bugzilla.kernel.org/show_bug.cgi?id=15182 Similar issue reported by an HP Mini and a 1005P user: https://bugzilla.kernel.org/show_bug.cgi?id=15532 >> >> I think it will indeed be possible to blacklist your machine, because >> someone has already anticipated this problem :-). > > dmi blacklisting is almost certainly wrong. It's more likely that > eeepc-laptop shouldn't be registering a backlight if > acpi_video_backlight_support() is true, but we'll then want to > investigate whether we also need to send the keyboard events through. Does the acpi-video logic not have logic on its own to send key events? So I guess laptops that don't have custom modules to handle this type of stuff don't get visual feedback from gnome-power-manager? The visual indication is very nice to have although its a "feature" that today the event isn't making it to gnome-power-manager. If it got involved, it would probably write to the /sys/* interfaces and I'd get the non-linear brightness changes even for Fn-* changes. If ACPI video driver can be fixed to stop non-linear part then I'd like to have the events somehow. If you guys think letting key event go threw is correct behavior then I may be able to provide a patch to eeepc-laptop for this. Chris -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
