Ubuntu 20.04 on HP Probook x360 435 G7 Can't resume after suspend as Screen not turned on
The laptop does not resume after suspend on HP Probook x360 435 G7 laptop, running Ubuntu 20.04. After pressing power button, the screen remains blank although the keyboard lights start glowing.
Pressing Alt-Ctrl-F1 or F2/F2, etc. does not yield any response on screen. However pressing Alt-Ctrl-F3 + Alt-Ctrl-Del does reboot the system. Also since keyboard is working, typing the login password (on a blank screen!) and then running "sudo reboot" also works! So apparantly only the screen is not getting turned on.
Contents of /var/log/pm-suspend.log can be found here.
I've tried suspend by using the suspend button in settings-menu and using
$sudo systemctl suspend
Processor is AMD Ryzen 7 4700U with Radeon Graphics
$ cat /proc/cpuinfo | grep AMD
model name : AMD Ryzen 7 4700U with Radeon Graphics
$ sudo dmidecode -s bios-version
S80 Ver. 01.01.04
Kernel version is 5.4.0-42-generic
$ uname -a
Linux abhijit-laptop 5.4.0-42-generic #46-Ubuntu SMP Fri Jul 10 00:24:02 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
RAM is 8 GB
$ free -m
total used free shared buff/cache available
Mem: 7420 1946 3721 166 1752 5027
Swap: 15257 0 15257
Swap Partition is 15 GB
$sudo swapon
NAME TYPE SIZE USED PRIO
/dev/nvme0n1p7 partition 14.9G 0B -2
Also,
$ cat /etc/systemd/logind.conf | grep -i suspend
#HandleSuspendKey=suspend
#HandleLidSwitch=suspend
#HandleLidSwitchExternalPower=suspend
#SuspendKeyIgnoreInhibited=no
Also
$ cat /sys/power/state
freeze mem
$ cat /sys/power/disk
[disabled]
$ cat /sys/power/mem_sleep
s2idle [deep]
$ cat /sys/power/resume
0:0
Secure-Boot is enabled, and that is why perhaps I don't see a "disk" in cat /etc/power/state. After Disabling secure-boot the "disk" option is visible in /etc/power/state , and hibernation works, but at the cost of reduced display resolution -- and even then suspend does not work.
Also,
$ sudo lshw -c video
[sudo] password for abhijit:
*-display UNCLAIMED
description: VGA compatible controller
product: Renoir
vendor: Advanced Micro Devices, Inc. [AMD/ATI]
physical id: 0
bus info: pci@0000:04:00.0
version: c2
width: 64 bits
clock: 33MHz
capabilities: pm pciexpress msi msix vga_controller bus_master cap_list
configuration: latency=0
resources: memory:d0000000-dfffffff memory:e0000000-e01fffff ioport:2000(size=256) memory:e0700000-e077ffff
and
$ lsmod | grep amd
edac_mce_amd 32768 0
kvm_amd 98304 0
ccp 86016 1 kvm_amd
kvm 663552 1 kvm_amd
Also,
$ lspci | grep -i intel
01:00.0 Network controller: Intel Corporation Wi-Fi 6 AX200 (rev 1a)
and
$ lspci | grep -i audi
04:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Device 1637
04:00.5 Multimedia controller: Advanced Micro Devices, Inc. [AMD] Raven/Raven2/FireFlight/Renoir Audio Processor (rev 01)
04:00.6 Audio device: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 10h-1fh) HD Audio Controller
and
03:00.0 Non-Volatile memory controller: SK hynix Device 1339
$sudo pm-hibernate
$ echo $?
1
$ sudo pm-suspend
$ echo $?
128
I've tried these:
1) Following this article Ubuntu 19.04 freezes after suspend I tried
/etc/default/grub setting
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash resume=UUID=646c69bc-782d-4bcb-be49-f4308c37d358 nouveau.modeset=0"
2) Following the advice on HP Notebook 17-y020ca under XUbuntu 16.04 unable to resume from suspend
pm-suspend --quirk-radeon-off
3) Installed following packages
$ dpkg -l | grep amdgpu
ii libdrm-amdgpu1:amd64 2.4.101-2 amd64 Userspace interface to amdgpu-specific kernel DRM services -- runtime
ii ricks-amdgpu-utils 2.6.0-1 all AMD GPU performance adjustment and monitoring
ii xserver-xorg-video-amdgpu 19.1.0-1 amd64 X.Org X server -- AMDGPU display driver
ii xserver-xorg-video-amdgpu-hwe-18.04 3:14.5 amd64 Transitional package for xserver-xorg-video-amdgpu-hwe-18.04
But all that did not help.
I'll be willing to share more logs and configuration file details. Can anybody help?
