Christopher Penalver: > Without providing which kernels you tested nobody may understand why this > happened. I hadn't finished my testing. But i did test some of the mainline kernels below. I'm not certain that I installed them correctly. I was hoping to get the ubuntu kernels to build to see if I could get a negative result to confirm I'm testing properly. linux-image-4.15.0-041500-generic (no hdmi problem) linux-image-4.15.3-041503-generic (no hdmi problem) linux-image-4.15.18-041518-generic (no hdmi problem)
> Yes, the instructions previously provided. I went to https://wiki.ubuntu.com/Kernel/KernelBisection I then went to https://launchpad.net/ubuntu/bionic/+source/linux in an attempt to install previously built kernels, and installed the packages matching the pattern linux-headers-4.13.0-17-generic_4.13.0-17.20_amd64.deb (685.9 KiB) linux-headers-4.13.0-17_4.13.0-17.20_all.deb (10.4 MiB) linux-image-4.13.0-17-generic_4.13.0-17.20_amd64.deb (19.9 MiB) once I booted this kernel the system didn't modeswitch on bootup. It didn't crash, but I dont' think it was a proper test. Finally I attempted to build from source directly (perhaps I didn't have modules for the kernel version?) I checked out from git: git clone git://kernel.ubuntu.com/ubuntu/ubuntu- bionic.git Now I attempted to follow the linked wiki page from KernelBisection https://wiki.ubuntu.com/Kernel/BuildYourOwnKernel * sudo apt-get build-dep linux-image-$(uname -r) # this didn't work until I enabled the source repos * I have tried adding something like "+test1" to the chanelog in debian.master * I also had to install libusb-dev and libpci-dev perhaps this had something to do with me installing bionic using new minimal install option. I then did fakeroot debian/rules clean fakeroot debian/rules binary-headers binary-generic binary-perarch (which takes 45 minutes) but I only get the ../*_all.deb file. Also, should there be modules files? Sorry for the long post. I figured I had missed some instructions, thats why i asked first. -- 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/1768139 Title: Kernel crash when booting laptop with hdmi monitor connected Status in linux package in Ubuntu: Incomplete Bug description: When I boot a Dell Inspiron 7559 with an external monitor connected to the hdmi port I get a crash on bootup. I can see the following stack trace in journalctl: syslog contains: kernel: Missing switch case (6) in intel_prepare_dp_ddi_buffers Description: Ubuntu 18.04 LTS Release: 18.04 linux-image-4.15.0-20-generic: Installed: 4.15.0-20.21 Candidate: 4.15.0-20.21 Version table: *** 4.15.0-20.21 500 500 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 Packages 100 /var/lib/dpkg/status Linux exposure 4.15.0-20-generic #21-Ubuntu SMP Tue Apr 24 06:16:15 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux 3) What you expected to happen I expected the laptop to boot to the login screen. 4) What happened instead I see a blank screen after grub and have to hard power off the laptop. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-20-generic 4.15.0-20.21 ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17 Uname: Linux 4.15.0-20-generic x86_64 ApportVersion: 2.20.9-0ubuntu7 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Mon Apr 30 17:22:20 2018 InstallationDate: Installed on 2018-04-28 (2 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) SourcePackage: linux-signed UpgradeStatus: No upgrade log present (probably fresh install) This is a fresh install. I have modified grub defaults to include "acpi_osi=!Windows 2015" --- ApportVersion: 2.20.9-0ubuntu7 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: apatterson 1965 F.... pulseaudio CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 18.04 HibernationDevice: RESUME=UUID=7b947b8e-de50-4ab6-b7f3-254a5dea924a InstallationDate: Installed on 2018-04-28 (9 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) MachineType: Dell Inc. Inspiron 7559 Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-20-generic root=UUID=77f1cfec-1fe4-4201-9a91-9f00a5d7782b ro quiet splash "acpi_osi=!Windows 2015" ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17 RelatedPackageVersions: linux-restricted-modules-4.15.0-20-generic N/A linux-backports-modules-4.15.0-20-generic N/A linux-firmware 1.173 Tags: bionic wayland-session Uname: Linux 4.15.0-20-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dialout dip lpadmin plugdev sambashare sudo wireshark _MarkForUpload: True dmi.bios.date: 09/26/2017 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.2.5 dmi.board.name: 0H0CC0 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: Not Specified dmi.modalias: dmi:bvnDellInc.:bvr1.2.5:bd09/26/2017:svnDellInc.:pnInspiron7559:pvr1.2.5:rvnDellInc.:rn0H0CC0:rvrA00:cvnDellInc.:ct10:cvrNotSpecified: dmi.product.family: Inspiron dmi.product.name: Inspiron 7559 dmi.product.version: 1.2.5 dmi.sys.vendor: Dell Inc. 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