On 04/12/2009 06:14 PM, Henrique de Moraes Holschuh wrote: > On Sat, 11 Apr 2009, Andrew Morton wrote: > >>> With latest git kernel, I'm no longer able to control my Thinkpad (W500) >>> brightness, although I can still control the backlight, bluetooth etc. >>> > > Niels, something just occourred to me. Is your problem the hotkeys, or the > brightness control itself? Check /sys/class/backlight/*, please. What do > you have in there? Does it work? > Hi Henrique, The directory is empty - this is when I used 2.6.30-rc1 (latest git) from yesterday. I'll keep retrying with the latest git kernels though. The only additional observations I can provide is: 1) pulling/plugging the power cord does actually have an effect on the brightness. 2) resuming form hibernate - Xorg is blank, until I simultaneously press a keyboard key and touch the synaptics pad. But I have this problem in 2.6.28/2.6.29 as well, and I guess it could either be vesafb or ACPI related, as it also happened when I used s2disk in a console session outside of X. In 2.6.29.1: lrwxrwxrwx 1 root root 0 Apr 12 20:01 /sys/class/backlight/acpi_video0 -> ../../devices/virtual/backlight/acpi_video0 which contains: drwxr-xr-x 3 root root 0 Apr 12 20:01 ./ drwxr-xr-x 3 root root 0 Apr 12 20:01 ../ -r--r--r-- 1 root root 4096 Apr 12 20:02 actual_brightness -rw-r--r-- 1 root root 4096 Apr 12 20:02 bl_power -rw-r--r-- 1 root root 4096 Apr 12 20:02 brightness -r--r--r-- 1 root root 4096 Apr 12 20:01 max_brightness drwxr-xr-x 2 root root 0 Apr 12 20:02 power/ lrwxrwxrwx 1 root root 0 Apr 12 20:01 subsystem -> ../../../../class/backlight/ -rw-r--r-- 1 root root 4096 Apr 12 20:01 uevent max_brightness = 15 and echoing values [0-15] to brightness controls it as expected, or just using the standard thinkpad keys (Fn-Home to increase). > If it is the hotkeys, make sure you either have the legacy ACPI events > enabled in kconfig, or that you have something tied to the thinkpad-acpi > input device (no, HAL doesn't do it _yet_, it just forwards the events to > X.org)... > I'm not sure what provides the "glue", other than "it works" in 2.6.29.1 and 2.6.28.9 with OpenSUSE 11.1 with xorg-x11-server-7.4-41.8. Would it help if I send the ACPI parts of my .config? These are based on the default /proc/config.gz that comes with the distro. # Power management and ACPI options CONFIG_ACPI=y CONFIG_ACPI_SLEEP=y CONFIG_ACPI_PROCFS=y CONFIG_ACPI_PROCFS_POWER=y CONFIG_ACPI_SYSFS_POWER=y CONFIG_ACPI_PROC_EVENT=y CONFIG_ACPI_AC=m CONFIG_ACPI_BATTERY=m CONFIG_ACPI_BUTTON=m CONFIG_ACPI_VIDEO=m CONFIG_ACPI_FAN=m CONFIG_ACPI_DOCK=y CONFIG_ACPI_PROCESSOR=m CONFIG_ACPI_HOTPLUG_CPU=y CONFIG_ACPI_THERMAL=m CONFIG_ACPI_CUSTOM_DSDT_FILE="" # CONFIG_ACPI_CUSTOM_DSDT is not set CONFIG_ACPI_BLACKLIST_YEAR=2001 # CONFIG_ACPI_DEBUG is not set # CONFIG_ACPI_PCI_SLOT is not set CONFIG_ACPI_CONTAINER=m CONFIG_ACPI_SBS=m CONFIG_X86_ACPI_CPUFREQ=m CONFIG_X86_POWERNOW_K7_ACPI=y CONFIG_X86_POWERNOW_K8_ACPI=y CONFIG_HOTPLUG_PCI_ACPI=m CONFIG_HOTPLUG_PCI_ACPI_IBM=m CONFIG_PNPACPI=y CONFIG_BLK_DEV_IDEACPI=y CONFIG_ATA_ACPI=y CONFIG_PATA_ACPI=m CONFIG_THINKPAD_ACPI=m # CONFIG_THINKPAD_ACPI_DEBUGFACILITIES is not set # CONFIG_THINKPAD_ACPI_DEBUG is not set CONFIG_THINKPAD_ACPI_BAY=y CONFIG_THINKPAD_ACPI_VIDEO=y CONFIG_THINKPAD_ACPI_HOTKEY_POLL=y CONFIG_ACPI_WMI=m # CONFIG_ACPI_ASUS is not set CONFIG_ACPI_TOSHIBA=m Regards, Niel -- 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
