Problem still persists after updating kernel to 3.8.0-31. Workarounds mentioned in bug descriptions still needed.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-signed in Ubuntu. https://bugs.launchpad.net/bugs/1222197 Title: Dell XPS 13 screen always on lowest dim with 3.8.0-30 kernel Status in “linux-signed” package in Ubuntu: Confirmed Bug description: Since installing the latest kernel 3.8.0-30 on my Dell XPS 13, I can only use the screen on lowest dim/brightness. Hardware keys as well as System Settings have no effect on the dim level. I already had issues with the brightness settings before. To make hardware keys and System Settings brightness settings work I added echo 0 > /sys/class/backlight/intel_backlight/brightness to /etc/rc.local and a custom /etc/pm/sleep.d/resume_brightness script. Things tried - remove "echo 0 > /sys/class/backlight/intel_backlight/brightness" from previously mentioned scripts - add grub boot options "acpi_osi=Linux acpi_backlight=vendor acpi_osi='!Windows 2012'" Workaround: - keep utilizing "echo 0 > /sys/class/backlight/intel_backlight/brightness" in both scripts - boot using the 3.8.0-29 kernel This is a regression. ProblemType: Bug DistroRelease: Ubuntu 13.04 Package: linux-signed-image-3.8.0-30-generic 3.8.0-30.44 ProcVersionSignature: Ubuntu 3.8.0-29.42-generic 3.8.13.5 Uname: Linux 3.8.0-29-generic x86_64 ApportVersion: 2.9.2-0ubuntu8.3 Architecture: amd64 Date: Sat Sep 7 18:09:08 2013 InstallationDate: Installed on 2013-03-28 (162 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha amd64 (20130328) MarkForUpload: True SourcePackage: linux-signed UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-signed/+bug/1222197/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
