Romuald, as per http://www.dell.com/support/drivers/us/en/19/Product/xps-13-l321x-mlk an update is available for your BIOS (A10). If you update to this following https://help.ubuntu.com/community/BiosUpdate , does it change anything? If it doesn't, could you please both specify what happened, and provide the output of the following terminal command: sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful. For more on BIOS updates and linux, please see https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette . Thank you for your understanding. ** Description changed: 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. + under Windows and is compliant for both UEFI and Bios mode. 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. - 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. + WORKAROUND: 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. 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. ** Tags added: bios-outdated-a10 ** Tags removed: kernel-bug-exists-upstream ** Tags added: kernel-bug-exists-upstream-v3.12-rc3 ** Tags added: regression-release ** Summary changed: - Plymouth screen refresh is bad when Live USB is started in UEFI mode + [Dell XPS 13 L322X] Plymouth screen refresh is bad when Live USB is started in UEFI mode ** Summary changed: - [Dell XPS 13 L322X] Plymouth screen refresh is bad when Live USB is started in UEFI mode + 8086:0166 [Dell XPS 13 L322X] Plymouth screen refresh is bad when Live USB is started in UEFI mode ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete ** Changed in: linux (Ubuntu) Importance: Medium => Low -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1234546 Title: 8086:0166 [Dell XPS 13 L322X] Plymouth screen refresh is bad when Live USB is started in UEFI mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1234546/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs