Unfortunately, when the screen is black I have no ssh access >From a cold boot, When I press the power button, nothing happen, the screen >remains black, I don't even see the BIOS logo or FDE password key. (when USB-C >is plugged in) I'm having a feeling the kernel might not even be started and it could be a Hardware BIOS issue...
-- 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/1866852 Title: System Display black screen on reboot or after a clean shutdown with USB-C Dock Monitor Status in linux package in Ubuntu: Confirmed Bug description: I'm running focal devel and the latest kernel (see proc version below) Linux version 5.4.0-18-generic (buildd@lgw01-amd64-034) (gcc version 9.2.1 20200306 (Ubuntu 9.2.1-31ubuntu3)) #22-Ubuntu SMP Sat Mar 7 18:13:06 UTC 2020 Dock Monitor is supported very well with multiple usb devices plugged on the monitor. However on reboot I face a black screen with no ability to enter my FDE password. Both my Laptop screen and the attached usb-c display nothing I have to hard power off and reboot without the USB-C monitor plugged in. Otherwise A reboot cycle with the usb-c unplugged works perfectly. Also I tried to run ubuntu-bug linux or ubuntu-bug linux-image-generic without success. I would be happy to provide much more debugging information. I will attach then to the launchpad Bug # --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu18 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: mclemenceau 2988 F.... pulseaudio /dev/snd/controlC0: mclemenceau 2988 F.... pulseaudio /dev/snd/controlC1: mclemenceau 2988 F.... pulseaudio CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 20.04 InstallationDate: Installed on 2020-01-05 (64 days ago) InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017) MachineType: HP HP Spectre x360 Convertible 13-ae0xx NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair Package: linux (not installed) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-18-generic root=/dev/mapper/vgubuntu-root ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 5.4.0-18.22-generic 5.4.24 RelatedPackageVersions: linux-restricted-modules-5.4.0-18-generic N/A linux-backports-modules-5.4.0-18-generic N/A linux-firmware 1.186 Tags: focal Uname: Linux 5.4.0-18-generic x86_64 UpgradeStatus: Upgraded to focal on 2020-01-23 (47 days ago) UserGroups: adm cdrom dip libvirt lpadmin lxd plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 06/14/2018 dmi.bios.vendor: AMI dmi.bios.version: F.21 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: 83B9 dmi.board.vendor: HP dmi.board.version: 56.41 dmi.chassis.type: 31 dmi.chassis.vendor: HP dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAMI:bvrF.21:bd06/14/2018:svnHP:pnHPSpectrex360Convertible13-ae0xx:pvr:rvnHP:rn83B9:rvr56.41:cvnHP:ct31:cvrChassisVersion: dmi.product.family: 103C_5335KV HP Spectre dmi.product.name: HP Spectre x360 Convertible 13-ae0xx dmi.product.sku: 2TV18AS#ABA dmi.sys.vendor: HP To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1866852/+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
