https://bugzilla.kernel.org/show_bug.cgi?id=115011 Hans de Goede <jwrdegoede@xxxxxxxxxxxxxxxxx> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jwrdegoede@xxxxxxxxxxxxxxxx | |g --- Comment #12 from Hans de Goede <jwrdegoede@xxxxxxxxxxxxxxxxx> --- Hi Alex, (In reply to Alex Deucher from comment #10) > (In reply to Luya Tshimbalanga from comment #7) > > Created attachment 210281 [details] > > dmesg with 4.6.0-0.rc0.git13.1 > > > > dmesg report using latest git kernel i.e. 4.6.0-0. Same result: > > > > [ 7.498283] [drm:radeon_acpi_init [radeon]] *ERROR* Cannot find a > > backlight controller > > This message is harmless. Your laptop has two GPUs. The ATIF ACPI method > is used to notify the driver of backlight change events so the driver checks > to see if it exists. Depending on the board configuration, the secondary > GPU may or may not have access to the backlight controller. In this case it > does not. Mayebe we need to make the error a bit less scary then, e.g. : [drm:radeon_acpi_init [radeon]] *Warning* Cannot find a backlight controller, this is ussualy harmless on dual gpu systems Yes it is a bit long, but it will likely help to avoid future bug reports about this. Regards, Hans -- You are receiving this mail because: You are watching the assignee of the bug. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
