http://bugzilla.novell.com/show_bug.cgi?id=621524 http://bugzilla.novell.com/show_bug.cgi?id=621524#c0 Summary: display backlight controls not working Classification: openSUSE Product: openSUSE 11.3 Version: RC 2 Platform: x86-64 OS/Version: openSUSE 11.3 Status: NEW Severity: Major Priority: P5 - None Component: Kernel AssignedTo: kernel-maintainers@forge.provo.novell.com ReportedBy: mail@andreas-demmer.de QAContact: qa@suse.de Found By: --- Blocker: --- User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.9.2.6) Gecko/20100625 Firefox/3.6.6 ( .NET CLR 3.5.30729; .NET4.0C) With kernel 2.6.34, I am unable to change the display brightness: The display backlight always stays 100% bright even when on battery or using a energy-saving power plan, sucking my battery dry in no time. I had a look at /proc/acpi/video to had a look at the brightness information, but the only folders there are GFX0 and PEGP, none of them contains an LCD subfolder. :-( It seems that brightness information is stored in: * GFX0/DD01/brightness * GFX0/DD02/brightness * PEGP/DD01/brightness * PEGP/DD02/brightness Writing "50" into this files (for 50% brightness) does not change the brightness. Interesting detail: xbacklight now sais the brightness was 50% but its not. Setting the brightness directly with xbacklight also does not work. Xorg detects backlight controls: "(II) intel(0): found backlight control interface /sys/class/backlight/acpi_video1", but there is also a acpi_video0. I have written different values in the "brightness" file of both entries but nothing happened. I suspect this to be an issue of the switchable graphics or the BIOS: My notebook (HP Envy 14) comes with switchable graphics, see bugs 621522 and 619869. Reproducible: Always -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.