http://bugzilla.kernel.org/show_bug.cgi?id=14548
--- Comment #7 from Ian Smith <[email protected]> 2009-11-09 18:24:26 --- With "acpi_backlight=vendor" there are some changes, although neither keyboard, nor brightness slider in kde control panel, nor writing to brightness from the terminal has any effect. The change is that the symlink to acpi_video0 is replaced with acer-wmi (the actual location is ../../devices/platform/acer-wmi/backlight/acer-wmi). The contents of this directory are also different. There are 5 files: - actual_brightness - bi_power - brightness - max-brightness - uevent Also 3 sub-directories: - device (actually a symlink to ../../acer-wmi) - power - subsystem (symlink to ../../../../../class/backlight) It occurred to me that writing to "actual_brightness" might work, but I got a "Permission denied" error, and, checking the properties, found that file is read-only, even for root. Do you need either an acpidump or lspci while the machine is in this state? BTW, one thing possibly worth mentioning is that I can get the keyboard to control brightness by booting with "acpi=off". Of course that's not a very acceptable work-around because I lose battery monitoring. -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching the assignee of the bug. ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ acpi-bugzilla mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
