On Wednesday 31 December 2008 13:33:28 Zhang Rui wrote: > the ACPI video backlight I/F on your laptop is broken. > could you please boot with acpi_backlight=vendor and see if it works at > before? > > BTW: please attach the output of "grep . /proc/acpi/video/*/*/*" in > 1. 2.6.28 kenrel & boot with "acpi_backlight=vendor" /proc/acpi/video/VGA/CRTD/brightness:<not supported> /proc/acpi/video/VGA/CRTD/EDID:<not supported> /proc/acpi/video/VGA/CRTD/info:device_id: 0x0100 /proc/acpi/video/VGA/CRTD/info:type: UNKNOWN /proc/acpi/video/VGA/CRTD/info:known by bios: no /proc/acpi/video/VGA/CRTD/state:state: 0x1d /proc/acpi/video/VGA/CRTD/state:query: 0x00 /proc/acpi/video/VGA/DVID/brightness:<not supported> /proc/acpi/video/VGA/DVID/EDID:<not supported> /proc/acpi/video/VGA/DVID/info:device_id: 0x0120 /proc/acpi/video/VGA/DVID/info:type: UNKNOWN /proc/acpi/video/VGA/DVID/info:known by bios: no /proc/acpi/video/VGA/DVID/state:state: 0x1d /proc/acpi/video/VGA/DVID/state:query: 0x00 /proc/acpi/video/VGA/LCDD/brightness:<not supported> /proc/acpi/video/VGA/LCDD/EDID:<not supported> /proc/acpi/video/VGA/LCDD/info:device_id: 0x0110 /proc/acpi/video/VGA/LCDD/info:type: UNKNOWN /proc/acpi/video/VGA/LCDD/info:known by bios: no /proc/acpi/video/VGA/LCDD/state:state: 0x1f /proc/acpi/video/VGA/LCDD/state:query: 0x01 > 2. an earlier working kernel, say 2.6.26. /proc/acpi/video/VGA/CRTD/brightness:<not supported> /proc/acpi/video/VGA/CRTD/EDID:<not supported> /proc/acpi/video/VGA/CRTD/info:device_id: 0x0100 /proc/acpi/video/VGA/CRTD/info:type: UNKNOWN /proc/acpi/video/VGA/CRTD/info:known by bios: no /proc/acpi/video/VGA/CRTD/state:state: 0x1d /proc/acpi/video/VGA/CRTD/state:query: 0x00 /proc/acpi/video/VGA/DVID/brightness:<not supported> /proc/acpi/video/VGA/DVID/EDID:<not supported> /proc/acpi/video/VGA/DVID/info:device_id: 0x0120 /proc/acpi/video/VGA/DVID/info:type: UNKNOWN /proc/acpi/video/VGA/DVID/info:known by bios: no /proc/acpi/video/VGA/DVID/state:state: 0x1d /proc/acpi/video/VGA/DVID/state:query: 0x00 /proc/acpi/video/VGA/LCDD/brightness:levels: 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 /proc/acpi/video/VGA/LCDD/brightness:current: 13 /proc/acpi/video/VGA/LCDD/EDID:<not supported> /proc/acpi/video/VGA/LCDD/info:device_id: 0x0110 /proc/acpi/video/VGA/LCDD/info:type: UNKNOWN /proc/acpi/video/VGA/LCDD/info:known by bios: no /proc/acpi/video/VGA/LCDD/state:state: 0x1f /proc/acpi/video/VGA/LCDD/state:query: 0x01 Thanks, Kel. -- 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
