I was able to get UEFI working with kernel 3.11.0-12-generic on my XPS 13 L322x HD
I booted into my XPS bios setup, navigated to the boot tab, and configure the setting as below; Secure Boot: Disable Load Legacy Option Rom: Enabled Boot List Option: UEFI As stated in my previous comment (#12) I had the backlight and screen refresh issues. Now I can see my desktop and adjust my brightness. -- 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/1234546 Title: Plymouth screen refresh is bad when Live USB is started in UEFI mode Status in “linux” package in Ubuntu: Confirmed Bug description: Test computer : Dell XPS 13 L322x with Intel Graphics HD4000. I burnt a Live Ubuntu Gnome 13.10 USB, first with the Beta 1, and with the 2013-09-30 daily image. This USB key has been created with Rufus under Windows and is compliant for both UEFI and Bios mode. If I boot on the key in Bios mode, no problem, I see the first screen in text mode (Install, test only...). After having chosen "test only", I see the Gnome footprint and everything runs. If I boot the key in UEFI mode (SecureBoot is disabled), I see the first screen. After having chosen "test only", plymouth starts but the screen refresh frequency is bad, so I have many footprints on the screen, etc. Everything seems to run fine also, except this screen refresh frequency. ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: plymouth 0.8.8-0ubuntu8 ProcVersionSignature: Ubuntu 3.11.0-9.16-generic 3.11.2 Uname: Linux 3.11.0-9-generic x86_64 ApportVersion: 2.12.5-0ubuntu1 Architecture: amd64 Date: Thu Oct 3 09:00:43 2013 DefaultPlymouth: /lib/plymouth/themes/ubuntu-gnome-logo/ubuntu-gnome-logo.plymouth InstallationDate: Installed on 2013-09-22 (10 days ago) InstallationMedia: Ubuntu-GNOME 13.10 "Saucy Salamander" - Alpha amd64 (20130903) MachineType: Dell Inc. Dell System XPS L322X MarkForUpload: True ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-9-generic.efi.signed root=UUID=529ee009-cfab-4b00-832d-5390f382f988 ro quiet splash vt.handoff=7 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-9-generic.efi.signed root=UUID=529ee009-cfab-4b00-832d-5390f382f988 ro quiet splash vt.handoff=7 SourcePackage: plymouth TextPlymouth: /lib/plymouth/themes/ubuntu-gnome-text/ubuntu-gnome-text.plymouth UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/15/2013 dmi.bios.vendor: Dell Inc. dmi.bios.version: A09 dmi.board.name: 0PJHXN 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.:bvrA09:bd05/15/2013:svnDellInc.:pnDellSystemXPSL322X:pvr:rvnDellInc.:rn0PJHXN:rvrA00:cvnDellInc.:ct8:cvr0.1: dmi.product.name: Dell System XPS L322X dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1234546/+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