[Bug 1813820] [NEW] Waking from Suspend causes screen to appear with grey static (like a TV with no signal)

Public bug reported:

I am running Kubuntu 18.10. This is the PH517-61 Acer Predator Helios
500 with the Ryzen processor. My first issue I need to deal with is
Suspend. I have temporarily disabled suspend in the kcmshell5
configuration. If I do let the laptop suspend and then hit the keyboard
I get what appears to be a 1950s TV with no signal. At this point I
manually power down and then power up again and am able to view things
on screen.

Running these commands I get this information:
$ journalctl -b -g suspend
Compiled without pattern matching support

$ journalctl -b -p3
-- Logs begin at Sun 2019-01-27 22:00:42 CST, end at Mon 2019-01-28 21:01:54 CST. --
Jan 28 20:40:33 craig-Predator-PH517-61 kernel: tpm_crb MSFT0101:00: can't request region for resource [mem 0xdf775000-0xdf778fff]
Jan 28 20:40:42 craig-Predator-PH517-61 spice-vdagent[2100]: Cannot access vdagent virtio channel /dev/virtio-ports/com.redhat.spice.0

$ uname -a
Linux craig-Predator-PH517-61 4.18.0-13-generic #14-Ubuntu SMP Wed Dec 5 09:04:24 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

This is a Vega 56 card but Kubuntu seems to think it is a Vega 64:
$ lspci -k | grep -EA3 'VGA|3D|Display'
08:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Vega 10 XT [Radeon RX Vega 64] (rev c7)
Subsystem: Acer Incorporated [ALI] Vega 10 XT [Radeon RX Vega 64]
Kernel driver in use: amdgpu
Kernel modules: amdgpu

$ glxinfo | grep "OpenGL version"
OpenGL version string: 4.4 (Compatibility Profile) Mesa 18.2.2

I will attempt to flesh this out more when I get home.

** Affects: linux (Ubuntu)
Importance: Undecided
Status: New


** Tags: kernel-bug

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https://bugs.launchpad.net/bugs/1813820

Title:
Waking from Suspend causes screen to appear with grey static (like a
TV with no signal)

Status in linux package in Ubuntu:
New

Bug description:
I am running Kubuntu 18.10. This is the PH517-61 Acer Predator Helios
500 with the Ryzen processor. My first issue I need to deal with is
Suspend. I have temporarily disabled suspend in the kcmshell5
configuration. If I do let the laptop suspend and then hit the
keyboard I get what appears to be a 1950s TV with no signal. At this
point I manually power down and then power up again and am able to
view things on screen.

Running these commands I get this information:
$ journalctl -b -g suspend
Compiled without pattern matching support

$ journalctl -b -p3
-- Logs begin at Sun 2019-01-27 22:00:42 CST, end at Mon 2019-01-28 21:01:54 CST. --
Jan 28 20:40:33 craig-Predator-PH517-61 kernel: tpm_crb MSFT0101:00: can't request region for resource [mem 0xdf775000-0xdf778fff]
Jan 28 20:40:42 craig-Predator-PH517-61 spice-vdagent[2100]: Cannot access vdagent virtio channel /dev/virtio-ports/com.redhat.spice.0

$ uname -a
Linux craig-Predator-PH517-61 4.18.0-13-generic #14-Ubuntu SMP Wed Dec 5 09:04:24 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

This is a Vega 56 card but Kubuntu seems to think it is a Vega 64:
$ lspci -k | grep -EA3 'VGA|3D|Display'
08:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Vega 10 XT [Radeon RX Vega 64] (rev c7)
Subsystem: Acer Incorporated [ALI] Vega 10 XT [Radeon RX Vega 64]
Kernel driver in use: amdgpu
Kernel modules: amdgpu

$ glxinfo | grep "OpenGL version"
OpenGL version string: 4.4 (Compatibility Profile) Mesa 18.2.2

I will attempt to flesh this out more when I get home.

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