Comment 16 for bug 1882442

I already tried that, it V4.1.5 worked with both Ubuntu 18.04 and 20.04. I
put in an earlier comment about this.

On Wed, Jul 8, 2020 at 10:40 AM Kai-Heng Feng <email address hidden>
wrote:

> Can you please test kernel v4.15, which is used by 18.04:
> https://kernel.ubuntu.com/~kernel-ppa/mainline/v4.15.18/
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> 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
>