On Sam, 2010-11-06 at 15:36 +0100, Prof. Dr. Klaus Kusche wrote: > On 2010-11-02 08:20, Michel DÃnzer wrote: > > On Mon, 2010-11-01 at 16:09 +0100, Prof. Dr. Klaus Kusche wrote: > >> On my Dell Precision M6500, backlight power switching does not work, > >> neither by using bl_power in /sys/backlight/... > > > > Please provide the full path of the file you're using. > > > >> nor by using DPMS: > >> * Any changes of bl_power are simply and silently ignored > >> (no effect, except that brightness is set to minimum), > >> although brightness tuning works fine > >> (in other words: Both the generic ACPI BIOS driver and the in-kernel > >> Dell laptop backlight driver can control backlight brightness, > >> but not backlight power). > >> * If DPMS becomes active, the screen contents on the internal display > >> slowly becomes garbled or fades away (so video output drivers > >> seem to be off), but the backlight remains on > >> (which is very bad for battery power). > >> The external screen (on display port) behaves even worse: > >> It enters energy saving mode (backlight off) and immediately wakes up > >> again, continuously cycling the backlight power every few seconds. > >> > >> Another problem which optically looks the same: > >> Zapping the X server (Xorg 1.9.1, radeon 6.13.2) with Ctrl-Alt-Bksp > >> leaves the system in an undefined state: > >> * Similar to DPMS, the display fades away or gets garbled > >> (video output off), but the backlight remains on. > >> * It does not switch to the text console automatically, > >> nor is it possible to switch manually with Ctrl-Alt-Fn. > >> > >> Configuration: > >> * Kernel 2.6.35.7-grsec > >> * Radeon DRM with KMS > >> * Radeon framebuffer with backlight control enabled > >> * The Radeon chip is a JUNIPER 0x1002:0x68A0, > >> the kernel should contain all the microcode needed for it. > >> * The displays are LCD1: INTERNAL_UNIPHY and DFP1: INTERNAL_UNIPHY1 > > > > Please provide the full Xorg.0.log file and dmesg output. > > I've sent the full logs on Nov 2nd. > Did they arrive? Yes, as should be evident from the list archives. > Did they provide any insight? > > Anything else I can do / try / provide? I'm out of ideas unfortunately, hopefully someeone else can jump in. -- Earthling Michel DÃnzer | http://www.vmware.com Libre software enthusiast | Debian, X and DRI developer _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
