Public bug reported:
After an unattended update from Ubuntu, the external monitor stopped
working. The monitor works fine if I log into Windows.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSignature: Ubuntu 5.11.0-38.42~20.04.1-generic 5.11.22
Uname: Linux 5.11.0-38-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.20
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: skip
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Wed Oct 20 13:52:16 2021
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
DkmsStatus:
xpad, 0.4, 5.11.0-36-generic, x86_64: installed
xpad, 0.4, 5.11.0-37-generic, x86_64: installed
xpad, 0.4, 5.11.0-38-generic, x86_64: installed
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
Intel Corporation Device [8086:9a60] (rev 01) (prog-if 00 [VGA controller])
Subsystem: Acer Incorporated [ALI] Device [1025:1539]
NVIDIA Corporation Device [10de:2520] (rev a1) (prog-if 00 [VGA controller])
Subsystem: Acer Incorporated [ALI] Device [1025:153a]
InstallationDate: Installed on 2021-09-11 (38 days ago)
InstallationMedia: Ubuntu 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819)
MachineType: Acer Nitro AN515-57
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.11.0-38-generic
root=UUID=3262607a-bb5e-4ffc-8e4d-c697a539cb73 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/29/2021
dmi.bios.release: 1.3
dmi.bios.vendor: Insyde Corp.
dmi.bios.version: V1.03
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: Scala_TLS
dmi.board.vendor: TGL
dmi.board.version: V1.03
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V1.03
dmi.ec.firmware.release: 1.2
dmi.modalias:
dmi:bvnInsydeCorp.:bvrV1.03:bd04/29/2021:br1.3:efr1.2:svnAcer:pnNitroAN515-57:pvrV1.03:sku0000000000000000:rvnTGL:rnScala_TLS:rvrV1.03:cvnAcer:ct10:cvrV1.03:
dmi.product.family: Nitro 5
dmi.product.name: Nitro AN515-57
dmi.product.sku: 0000000000000000
dmi.product.version: V1.03
dmi.sys.vendor: Acer
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.105-3~20.04.2
version.libgl1-mesa-dri: libgl1-mesa-dri 21.0.3-0ubuntu0.3~20.04.3
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.11-1ubuntu1~20.04.2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20200226-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal ubuntu
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https://bugs.launchpad.net/bugs/1947826
Title:
External monitor stopped working after update
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