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 the external 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.
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 the external 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: /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/1874194
https:/
but sort of the reverse, in that the internal monitor is the problem.
Thank you for your help.
ProblemType: Bug 5.4.0-33- generic 5.4.0-33.37 ature: Ubuntu 5.4.0-33.37-generic 5.4.34 controlC2: david 2012 F.... pulseaudio controlC1: david 2012 F.... pulseaudio controlC0: david 2012 F.... pulseaudio esult: skip UUID=3b1a8a2e- 1937-4785- b4bb-49f9a251b2 92 /boot/vmlinuz- 5.4.0-33- generic root=UUID= 95b8de7f- 9de3-4cea- b947-e135a73894 8c ro ersions: restricted- modules- 5.4.0-33- generic N/A backports- modules- 5.4.0-33- generic N/A version: 00 :bvr1.7. 0:bd03/ 15/2019: svnDellInc. :pnInspiron3275 AIO:pvr1. 7.0:rvnDellInc. :rn04NJ6P: rvrA02: cvnDellInc. :ct13:cvr00: version: 1.7.0
DistroRelease: Ubuntu 20.04
Package: linux-image-
ProcVersionSign
Uname: Linux 5.4.0-33-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
/dev/snd/
/dev/snd/
CasperMD5CheckR
CurrentDesktop: ubuntu:GNOME
Date: Sun Jun 7 11:43:37 2020
HibernationDevice: RESUME=
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=
RelatedPackageV
linux-
linux-
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.
dmi.modalias: dmi:bvnDellInc.
dmi.product.family: Inspiron
dmi.product.name: Inspiron 3275 AIO
dmi.product.sku: 0855
dmi.product.
dmi.sys.vendor: Dell Inc.