bolek, as per http://www.dell.com/support/home/us/en/19/product- support/product/inspiron-14-5447-laptop/drivers/advanced an update to your computer's buggy and outdated BIOS is available (A08). If you update to this following https://help.ubuntu.com/community/BIOSUpdate does it change anything?
For more on BIOS updates and linux, please see https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette . Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful. As well, you don't have to create a new bug report. Once the BIOS is updated, if the problem is still reproducible: 1) Please provide the output of the following terminal command (not perform an apport-collect): sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date 2) Please make a comment specifically advising on if there was an improvement or not. 3) Please mark this report Status Confirmed. If it's not reproducible, please mark this as Invalid. Thank you for your understanding. ** Tags added: bios-outdated-a08 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu.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/1529995 Title: intel_pipe_config_compare Status in linux package in Ubuntu: Incomplete Bug description: intel_pipe_config_compare ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: linux-image-4.2.0-22-generic 4.2.0-22.27 ProcVersionSignature: Ubuntu 4.2.0-22.27-generic 4.2.6 Uname: Linux 4.2.0-22-generic x86_64 NonfreeKernelModules: fglrx ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: bolek 1493 F.... pulseaudio /dev/snd/controlC1: bolek 1493 F.... pulseaudio CurrentDesktop: KDE Date: Tue Dec 29 18:04:07 2015 HibernationDevice: RESUME=UUID=6bb7d3fa-a76a-40b0-90a7-63ec277db645 InstallationDate: Installed on 2015-12-17 (12 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) MachineType: Dell Inc. Inspiron 5447 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-4.2.0-22-generic.efi.signed root=UUID=8caa0631-15bd-4232-9535-d1238bf42ccd ro rootflags=subvol=@ quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.2.0-22-generic N/A linux-backports-modules-4.2.0-22-generic N/A linux-firmware 1.149.3 SourcePackage: linux UdevLog: UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/09/2014 dmi.bios.vendor: Dell Inc. dmi.bios.version: A04 dmi.board.name: 00HFXN dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: A04 dmi.modalias: dmi:bvnDellInc.:bvrA04:bd05/09/2014:svnDellInc.:pnInspiron5447:pvrA04:rvnDellInc.:rn00HFXN:rvrA00:cvnDellInc.:ct8:cvrA04: dmi.product.name: Inspiron 5447 dmi.product.version: A04 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1529995/+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