Kamal: Many thanks for your patience and help. I was able to find the patches as you instructed me. I applied the ones from natty on linux-2.6.38-rc6 sources from Debian repositories (package linux-source-2.6.38-rc6). All the patches succeded at once except for the one called "drm/i915/panel: Fix application of legacy backlight value" (on file drivers/gpu/drm/i915/intel_panel.c). The kernel was compiled and installed without problems. /sys/class/backlight/intel_backlight interface was created and works fine at the moment. It was necessary to use "acpi_backlight=vendor" parameter to use the hotkeys. I'm using a Dell Studio 1558 with intel graphics by the way. I will try to apply the patches on current stable release linux-2.6.37 and make "intel_panel.c patch" work. Please let me know if I should paste my results in a different place, since this is an Ubuntu bug report and I'm working on Debian.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/568611 Title: Screen brightness control fails on Dell Studio 1558 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
