Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.18 kernel[0].
If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.18-rc1-utopic/ ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1382909 Title: Dell XPS 15Z Requires Kernel Parameters to Boot Correctly Status in “linux” package in Ubuntu: Incomplete Bug description: Filed at Chris P's request, this bug is still present on both the Ubuntu 14.04 kernel (3.13) as well as the latest mainline kernel (3.17). In addition the mainline kernel causes additional issues with regards to brightness control. I have used the boot param noapic to run Ubuntu on this laptop since 12.04, however acpi=off, acpi=noirq or acpi_backlight=vendor dell_laptop.backlight=0 all also fix the issue. Using the last option however causes poor brightness control as the dell backlight driver is not properly optimized. Related Reports: * https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1082244 * https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1072891 * https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1048141 ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-37-generic 3.13.0-37.64 ProcVersionSignature: Ubuntu 3.13.0-37.64-generic 3.13.11.7 Uname: Linux 3.13.0-37-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: michael 2066 F.... pulseaudio CurrentDesktop: Unity Date: Sun Oct 19 15:50:18 2014 HibernationDevice: RESUME=UUID=79996bc0-bea3-4008-9182-e2afa0585224 InstallationDate: Installed on 2014-01-31 (260 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) MachineType: Dell Inc. Dell System XPS 15Z ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-37-generic root=UUID=4c859e77-4949-474c-9531-c6da9ef27187 ro noapic quiet splash RelatedPackageVersions: linux-restricted-modules-3.13.0-37-generic N/A linux-backports-modules-3.13.0-37-generic N/A linux-firmware 1.127.7 SourcePackage: linux UpgradeStatus: Upgraded to trusty on 2014-04-16 (185 days ago) dmi.bios.date: 09/07/2012 dmi.bios.vendor: Dell Inc. dmi.bios.version: A12 dmi.board.name: 060G42 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: 0.1 dmi.modalias: dmi:bvnDellInc.:bvrA12:bd09/07/2012:svnDellInc.:pnDellSystemXPS15Z:pvr:rvnDellInc.:rn060G42:rvrA00:cvnDellInc.:ct8:cvr0.1: dmi.product.name: Dell System XPS 15Z dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1382909/+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
