HillClimber, thank you for taking the time to report this bug and trying to help make Ubuntu better. However, the upstream kernel is not a software package provided by the official Ubuntu repositories. Because of this and as outlined in https://wiki.ubuntu.com/Kernel/MainlineBuilds the Ubuntu project can not support or fix your particular bug. Please report this bug to the provider of the software package. Thanks!
If you are interested in learning more about software repositories and Ubuntu, check https://help.ubuntu.com/community/Repositories. ** No longer affects: linux (Ubuntu) ** Project changed: linux => linux (Ubuntu) ** Changed in: linux (Ubuntu) Importance: Unknown => Undecided ** Changed in: linux (Ubuntu) Status: Unknown => New ** Changed in: linux (Ubuntu) Remote watch: Linux Kernel Bug Tracker #108981 => None ** Changed in: linux (Ubuntu) Status: New => Invalid -- 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/1524122 Title: XPS 15 (9550) Won't boot with 4.4 Status in linux package in Ubuntu: Invalid Bug description: Neither 4.4rc3 nor 4.3rc4 will boot on my Dell XPS 15 (9550). 4.3 boots fine. The boot process halts with "ALERT! /dev/disk/by-uuid/<uuid> does not exist", although the UUID does exist, and other kernels boot fine. I'm attaching a screenshot of the console boot log. I apologize that it is hard to read, because my screen is 3840x2160 and each line is less that 2mm high. Here's my grub stanza: load_video gfxmode $linux_gfx_mode insmod gzio if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi insmod part_gpt insmod ext2 if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root 7e2ed448-28a7-465e-a5b0-58db19b2711a else search --no-floppy --fs-uuid --set=root 7e2ed448-28a7-465e-a5b0-58db19b2711a fi echo 'Loading Linux 4.4.0-040400rc4-generic ...' linux /boot/vmlinuz-4.4.0-040400rc4-generic root=UUID=7e2ed448-28a7-465e-a5b0-58db19b2711a ro quiet splash i915.preliminary_hw_support=1 i915.enable_ips=0 $vt_handoff echo 'Loading initial ramdisk ...' initrd /boot/initrd.img-4.4.0-040400rc4-generic Possibly related is the following warning when i update-initramfs: $ sudo update-initramfs -u update-initramfs: Generating /boot/initrd.img-4.4.0-040400rc4-generic W: Possible missing firmware /lib/firmware/i915/skl_guc_ver4.bin for module i915 Please let me know what other info would be helpful. Thanks! --- ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 CurrentDesktop: Unity DistroRelease: Ubuntu 15.10 InstallationDate: Installed on 2015-11-18 (20 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) Package: linux (not installed) Tags: wily Uname: Linux 4.3.0-040300-generic x86_64 UnreportableReason: The running kernel is not an Ubuntu kernel UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo users video wireshark _MarkForUpload: True To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1524122/+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
