於 日，2012-01-22 於 14:17 +0100，Artur Flinta 提到： > Hi Joey! > > > #define KEY_BRIGHTNESSDOWN 224 > > #define KEY_BRIGHTNESSUP 225 > > > > Suggest you can try to run the following command before run X-windows: > > > > setkeycodes e054 224 > > setkeycodes e04c 225 > > I've run above commands (setkeycodes), and started X-window, then > pressed several times brightness keys... and noticed something like > this in dmesg: > > [107404.053624] pkexec[11999]: aflinta: Executing command [USER=root] > [TTY=unknown] [CWD=/home/aflinta] > [COMMAND=/usr/libexec/gsd-backlight-helper --set-brightness 5] > [107405.449578] pkexec[12003]: pam_systemd(polkit-1:session): Failed > to create session: Invalid argument > [107405.450971] pkexec[12003]: aflinta: Executing command [USER=root] > [TTY=unknown] [CWD=/home/aflinta] > [COMMAND=/usr/libexec/gsd-backlight-helper --set-brightness 6] > [107405.923167] pkexec[12011]: pam_systemd(polkit-1:session): Failed > to create session: Invalid argument > [107405.924625] pkexec[12011]: aflinta: Executing command [USER=root] > [TTY=unknown] [CWD=/home/aflinta] > [COMMAND=/usr/libexec/gsd-backlight-helper --set-brightness 4] > [107406.197956] pkexec[12019]: pam_unix(polkit-1:session): session > opened for user root by (uid=1000) > [107406.199010] pkexec[12019]: aflinta: Executing command [USER=root] > [TTY=unknown] [CWD=/home/aflinta] > [COMMAND=/usr/libexec/gsd-backlight-helper --set-brightness 2] > > But brightness haven't changed. I think that this is quite similar to > my first tries to directly write brightness value to Yes, you are right. At least we fix the hotkey event problem. > /sys/class/backlight/acpi_video0/brightness (as described in my first > post) - but without any success. > Yes! we still need fix the problem with backlight control. Please kindly give me the result after add the following debug parameter: acpi.debug_level=0xF acpi.debug_layer=0xFFFFFFFF log_buf_len=5M And, Did you try the following kernel parameter? acpi_backlight=vendor Please try it! There has a write brightness command 0x06 in WHCM method, WHCM call by WMAA. I think might need implement 0x06 command support in hp-wmi.c, currently, I didn't see it. -- 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
