Yes, it worked on 18.04. The problem came with the upgrade to 20.04. -- 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/1882442
Title: Upgrade from 18.04 to 20.04 deactivates internal monitor in display manager Status in linux package in Ubuntu: Incomplete Status in linux package in Fedora: Unknown Bug description: output of lsb_release -rd: Description: Ubuntu 20.04 LTS Release: 20.04 I recently upgraded from 18.04 to 20.04 and was using MATE. When the upgrade was run my external HDMI monitor was plugged in, after the update, when I reboot, the internal monitor shows the beginning of the boot process (I deactivated 'silent splash' by editing grub.cfg) then it switches to the HDMI monitor and the internal monitor goes dark. I can also get the tty consoles on the external monitor but not on the internal monitor. In MATE it was a real problem because the panel is apparently still on the invisible part of the desktop; I used a tty to install gnome, then I could get the display settings by right-clicking on the desktop, and setting the monitors to mirror, so I can reach applications, etc. Computer is a Dell Inspiron 3275 AIO with touch screen and Intel on-board video, I think. I had no problems with Ubuntu 18.04 with MATE. The problem seems to be similar to this bug: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1874194 but sort of the reverse, in that the internal monitor is the problem. Thank you for your help. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.4.0-33-generic 5.4.0-33.37 ProcVersionSignature: Ubuntu 5.4.0-33.37-generic 5.4.34 Uname: Linux 5.4.0-33-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: david 2012 F.... pulseaudio /dev/snd/controlC1: david 2012 F.... pulseaudio /dev/snd/controlC0: david 2012 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Sun Jun 7 11:43:37 2020 HibernationDevice: RESUME=UUID=3b1a8a2e-1937-4785-b4bb-49f9a251b292 InstallationDate: Installed on 2020-03-07 (91 days ago) InstallationMedia: Ubuntu-MATE 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) MachineType: Dell Inc. Inspiron 3275 AIO ProcFB: 0 amdgpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-33-generic root=UUID=95b8de7f-9de3-4cea-b947-e135a738948c ro RelatedPackageVersions: linux-restricted-modules-5.4.0-33-generic N/A linux-backports-modules-5.4.0-33-generic N/A linux-firmware 1.187 SourcePackage: linux UpgradeStatus: Upgraded to focal on 2020-06-06 (1 days ago) dmi.bios.date: 03/15/2019 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.7.0 dmi.board.name: 04NJ6P dmi.board.vendor: Dell Inc. dmi.board.version: A02 dmi.chassis.type: 13 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: 00 dmi.modalias: dmi:bvnDellInc.:bvr1.7.0:bd03/15/2019:svnDellInc.:pnInspiron3275AIO:pvr1.7.0:rvnDellInc.:rn04NJ6P:rvrA02:cvnDellInc.:ct13:cvr00: dmi.product.family: Inspiron dmi.product.name: Inspiron 3275 AIO dmi.product.sku: 0855 dmi.product.version: 1.7.0 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1882442/+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
