This sounds like two separate issues:
1. Needing to wake the TV with the remote. I would hazard a guess that's
a feature/bug of the TV firmware. TVs generally don't expect to be used
as monitors and may not implement power mode switching reliably like a
proper monitor. Most likely it's designed to respond to the remote only.
I don't think this is a software bug in Ubuntu, but probably in the TV
itself...
2. Windows get moved and resized. This should only happen if the monitor
(TV) is seen to be unplugged. But indeed sometimes power saving modes do
get confused for the monitor being unplugged. I wonder though if this is
also a problem with the TV failing to sleep correctly and instead
disconnecting from the computer... Can you test a (non-TV) monitor on
the same HDMI port?
** Package changed: xorg (Ubuntu) => xorg-server (Ubuntu)
** Changed in: xorg-server (Ubuntu)
Status: New => Incomplete
** Summary changed:
- HDMI connected monitor wakeup problems
+ HDMI connected TV wakeup problems
** Summary changed:
- HDMI connected TV wakeup problems
+ [amdgpu] HDMI connected TV wakeup problems
** Package changed: xorg-server (Ubuntu) => xserver-xorg-video-amdgpu
(Ubuntu)
** Tags added: amdgpu
** Tags added: multimonitor
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https://bugs.launchpad.net/bugs/1892427
Title:
[amdgpu] HDMI connected TV wakeup problems
Status in xserver-xorg-video-amdgpu package in Ubuntu:
Incomplete
Bug description:
The setup here is critical to understanding the problem. A laptop is
connected via HDMI to a TV monitor. Two displays are thus available to
the OS. Everything works great both in mirror display and regular
display. At the end of day, I lock the user account and the display
manager (DM) tells the monitors to blank (sleep?). When I touch the DM
and login the laptop display livens up and looks good. However, the TV
display often doesn't and I need to wake up the TV with the TV control
stick. This works OK, and the second display comes back. And all the
windows associated with that display return from sleep OK. *HOWEVER*,
all the geometry for those windows (term windows is one example) are
lost. I can see the windows in the term overview, but I cant get to
them on the second display.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xorg 1:7.7+13ubuntu3
ProcVersionSignature: Ubuntu 4.15.0-112.113~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-112-generic x86_64
.tmp.unity_support_test.0:
ApportVersion: 2.20.1-0ubuntu2.24
Architecture: amd64
CompizPlugins: No value set for
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
Date: Thu Aug 20 17:00:58 2020
DistUpgraded: Fresh install
DistroCodename: xenial
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
Advanced Micro Devices, Inc. [AMD/ATI] Carrizo [1002:9874] (rev c8) (prog-if
00 [VGA controller])
Subsystem: Hewlett-Packard Company Carrizo [103c:8348]
InstallationDate: Installed on 2018-04-20 (853 days ago)
InstallationMedia: Ubuntu 16.04.4 LTS "Xenial Xerus" - Release amd64
(20180228)
MachineType: HP HP Laptop 17-ak0xx
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-112-generic
root=UUID=79cc5ed4-f740-450d-9a89-c5b4f899d10e ro quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/02/2017
dmi.bios.vendor: Insyde
dmi.bios.version: F.06
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: 8348
dmi.board.vendor: HP
dmi.board.version: 42.20
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.chassis.version: Chassis Version
dmi.modalias:
dmi:bvnInsyde:bvrF.06:bd11/02/2017:svnHP:pnHPLaptop17-ak0xx:pvrType1ProductConfigId:rvnHP:rn8348:rvr42.20:cvnHP:ct10:cvrChassisVersion:
dmi.product.family: 103C_5335KV HP Notebook
dmi.product.name: HP Laptop 17-ak0xx
dmi.product.version: Type1ProductConfigId
dmi.sys.vendor: HP
version.compiz: compiz 1:0.9.12.3+16.04.20171116-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.91-2~16.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.5-0ubuntu0~16.04.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.5-0ubuntu0~16.04.1
version.xserver-xorg-core: xserver-xorg-core N/A
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A
xserver.bootTime: Wed Aug 5 16:27:12 2020
xserver.configfile: default
xserver.errors:
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.19.6-1ubuntu4.1~16.04.2
xserver.video_driver: amdgpu
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