Hi, on Kubuntu 22.04 Desktop (Minimal Install), I'm getting an issue where, if the monitor is turned off during boot, when the monitor is turned on later, no video signal will be found.
Steps to reproduce:
- Fresh install Kubuntu 22.04, minimal install, autologin. Install all updates as of 9/9/2022.
- PCs we have tried: Dell Optiplex 7060, Lenovo ThinkCentre M73
- Monitor is connected via displayport.
- Verify Kubuntu has installed correctly and everything is working. Shut down.
- Turn off monitor via its power button.
- Turn on PC. Wait for Kubuntu to boot.
- Turn on Monitor. It shows "No Signal" and goes back to sleep. Expected behaviour: It displays the desktop as normal.
- Pressing Ctrl+Alt+F2 will wake the monitor with the command prompt. Pressing Ctrl+Alt+F1 to switch to desktop will put the monitor back to sleep again with No Signal.
- Connecting to the PC via a remote desktop software will only show a black screen instead of the desktop. GUI Applications autostarted via startup script will still be displayed, though.
- I haven't found any way to get the desktop to display, except for restarting the PC with the monitor turned on.
I have a specific use case where sometimes the monitor is off when a PC is booted, and it needs to function correctly when the monitor turns on later.
Hopefully this is reproduceable on your end, and a solution or workaround can be found. Happy to supply any further information if needed. Thanks.
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ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu82.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: build 825 F.... pulseaudio
CRDA: N/A
CasperMD5CheckResult: pass
DistroRelease: Ubuntu 22.04
InstallationDate: Installed on 2022-09-12 (0 days ago)
InstallationMedia: Kubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 (20220419)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 413c:301a Dell Computer Corp. Dell MS116 Optical Mouse
Bus 001 Device 004: ID 8087:0aaa Intel Corp. Bluetooth 9460/9560 Jefferson Peak (JfP)
Bus 001 Device 003: ID 0461:4e04 Primax Electronics, Ltd Lenovo Keyboard KB1021
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Dell Inc. OptiPlex 7060
Package: linux (not installed)
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.15.0-47-generic root=UUID=0fbbc1d9-9bfc-4328-b54c-ce0726462130 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 5.15.0-47.51-generic 5.15.46
RelatedPackageVersions:
linux-restricted-modules-5.15.0-47-generic N/A
linux-backports-modules-5.15.0-47-generic N/A
linux-firmware 20220329.git681281e4-0ubuntu3.4
Tags: jammy
Uname: Linux 5.15.0-47-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 07/06/2022
dmi.bios.release: 1.21
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.21.0
dmi.board.name: 0NC2VH
dmi.board.vendor: Dell Inc.
dmi.board.version: A01
dmi.chassis.type: 3
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.21.0:bd07/06/2022:br1.21:svnDellInc.:pnOptiPlex7060:pvr:rvnDellInc.:rn0NC2VH:rvrA01:cvnDellInc.:ct3:cvr:sku085A:
dmi.product.family: OptiPlex
dmi.product.name: OptiPlex 7060
dmi.product.sku: 085A
dmi.sys.vendor: Dell Inc.
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