Just some data about the brightness control in X60 tablet. I've only had this thing for about a week and overall things are quite sweet with Ubuntu feisty :-) The brightness _control_ works out of the box but the on screen display (provided by gnome-power-manager) does not get the right level, i.e. indication is broken. The hal is configured not to do any control in response to brightness keys as this would cause a loop: control generates key event which is caught, which causes control, which causes event, which.. etc. Anyway, for me the ACPI video module is _needed_ in order for the brightness control to work. If I remove the video module, acpi_listen does still see Fn+Home but Fn+End does not cause any events. Also the brightness level stays unchanged. When I have the ACPI video module loaded, the events reported by acpi_listen are down: video LCD0 00000087 00000000 ibm/hotkey HKEY 00000080 00005010 up: ibm/hotkey HKEY 00000080 00001010 video LCD0 00000086 00000000 ibm/hotkey HKEY 00000080 00005010 If I remove ibm_acpi module but have video module loaded, the situation is the same: the brightness control works, but indication not. I dumped /dev/nvram with different levels and looks like the brigtness level is at offset 0x5e lower nibble just like expected by the thinkpad-keys.c in hotkey-setup package: --- nvram-4.txt 2007-04-29 11:24:20.000000000 +0300 +++ nvram-5.txt 2007-04-29 11:24:25.000000000 +0300 @@ -3,7 +3,7 @@ 00000020 03 a5 00 fc 20 88 c1 01 00 7c 00 00 00 00 00 00 |.... ....|......| 00000030 00 00 08 40 b0 bb 00 63 bb d4 2f 07 d0 30 80 00 |...@...c../..0..| 00000040 00 00 00 00 c0 05 52 f8 01 1d 00 5b 0f 02 00 00 |......R....[....| -00000050 00 00 04 00 fe 38 ff a0 03 71 d0 06 13 c2 a4 f1 |.....8...q......| +00000050 00 00 04 00 fe 38 ff a0 03 71 d0 06 13 c2 85 f1 |.....8...q......| 00000060 c4 03 90 fe 00 06 71 00 03 12 fc 00 00 00 49 53 |......q.......IS| 00000070 b2 00 |..| 00000072 --- nvram-5.txt 2007-04-29 11:24:25.000000000 +0300 +++ nvram-6.txt 2007-04-29 11:24:29.000000000 +0300 @@ -3,7 +3,7 @@ 00000020 03 a5 00 fc 20 88 c1 01 00 7c 00 00 00 00 00 00 |.... ....|......| 00000030 00 00 08 40 b0 bb 00 63 bb d4 2f 07 d0 30 80 00 |...@...c../..0..| 00000040 00 00 00 00 c0 05 52 f8 01 1d 00 5b 0f 02 00 00 |......R....[....| -00000050 00 00 04 00 fe 38 ff a0 03 71 d0 06 13 c2 85 f1 |.....8...q......| +00000050 00 00 04 00 fe 38 ff a0 03 71 d0 06 13 c2 a6 f1 |.....8...q......| 00000060 c4 03 90 fe 00 06 71 00 03 12 fc 00 00 00 49 53 |......q.......IS| 00000070 b2 00 |..| 00000072 The ibm_acpi module seems to read the level from EC, offset 0x31 but for me the value there changes only if I control the brightness via e.g. /proc/acpi/ibm/brightness. Control via /proc/acpi/ibm/brightness is visible to /dev/nvram. So I suppose one way to fix the indication would be to make hal read the level via /dev/nvram. But I suppose it would be nice for /proc/acpi/ibm/brightness to also indicate the right level. For me the /proc/acpi/video/VID/LCD0/brightness shows always zero for the current brightness: levels: 100 30 30 40 50 60 70 80 90 100 current: 0 Can I provide some more info? Something from lshal: smbios.system.version = 'ThinkPad X60 Tablet' (string) smbios.system.product = '6363A7G' (string) smbios.system.manufacturer = 'LENOVO' (string) smbios.bios.release_date = '12/14/2006' (string) smbios.bios.version = '7JET19WW (1.04 )' (string) smbios.bios.vendor = 'LENOVO' (string) -- http://www.iki.fi/~ananaza/ ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ ibm-acpi-devel mailing list ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/ibm-acpi-devel
