HP 820 G3 resume from hibernation hangs with color bars

[Mike]

Ubuntu 5.4.0-29.33-generic 5.4.30

I am using Legacy mode in BIOS to boot laptop.
I hibernate (I tried "systemctl hibernate" and "sudo hibernate") to swap file (allocated size 18GB what is 2GB more than my RAM size) and both methods hibernates to file OK.
After hibernation I want to resume.
First resume always ends suspended on color bars after ca 1 min and 2 times backlighted screen meantime. Keyboard driver can accept CTL+ALT+DEL to restart or I can power off and power on again.
Second restart always loads grub normally and after I choose default ooot option it correctly resumes from swap file but it should work in this way from the first resume try.

I've tried updated grub with options: nosplash, noquiet, nomodeset and even keeping shift in BIOS to see what's going during failed resume but no success.

nomodeset option doesn't show color bars, but finishes with backlighted black screen only.
Keeping shift in BIOS shows: " RUB loading" without G but after minute it ends on blank backlighted screen. Keeping ESC doesn't help to see any line from boot even nosplash and noquiet is active.

Normal suspend and resume from suspend works but hibernation not.

Only dmesg line is concerning, but I think nomodeset should eliminate if it would be i915 problem.
[ 10.015720] i915 0000:00:02.0: [drm:intel_dp_aux_init_backlight_funcs [i915]] Panel advertises DPCD backlight support, but VBT disagrees. If your backlight controls don't work try booting with i915.enable_dpcd_backlight=1. If your machine needs this, please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel
Anyway backlight controls is working OK without nomodeset option.

HP BIOS is updated from 01/05/2020 and laptop is about 4 years old.

System:
  Host: UB820 Kernel: 5.4.0-29-generic x86_64 bits: 64 Desktop: Gnome 3.36.1
  Distro: Ubuntu 20.04 LTS (Focal Fossa)
Machine:
  Type: Laptop System: HP product: HP EliteBook 820 G3 v: N/A
  serial: <superuser/root required>
  Mobo: HP model: 807C v: KBC Version 85.79
  serial: <superuser/root required> UEFI [Legacy]: HP v: N75 Ver. 01.45
  date: 01/05/2020
Battery:
  ID-1: BAT0 charge: 34.0 Wh condition: 35.1/35.1 Wh (100%)
CPU:
  Topology: Dual Core model: Intel Core i5-6300U bits: 64 type: MT MCP
  L2 cache: 3072 KiB
  Speed: 800 MHz min/max: 400/3000 MHz Core speeds (MHz): 1: 800 2: 800
  3: 800 4: 800
Graphics:
  Device-1: Intel Skylake GT2 [HD Graphics 520] driver: i915 v: kernel
  Display: x11 server: X.Org 1.20.8 driver: vesa unloaded: fbdev,modesetting
  resolution: 1366x768~60Hz
  OpenGL: renderer: Mesa Intel HD Graphics 520 (SKL GT2) v: 4.6 Mesa 20.0.4
Audio:
  Device-1: Intel Sunrise Point-LP HD Audio driver: snd_hda_intel
  Sound Server: ALSA v: k5.4.0-29-generic
Network:
  Device-1: Intel Ethernet I219-LM driver: e1000e
  IF: enp0s31f6 state: down mac: XX:XX:XX:XX:XX:XX
  Device-2: Intel Wireless 8260 driver: iwlwifi
  IF: wlp2s0 state: up mac: XX:XX:XX:XX:XX:XX
  Device-3: HP HP lt4120 Snapdragon X5 LTE type: USB driver: cdc_ether
  IF: enxda94de160772 state: up speed: N/A duplex: N/A
  mac: XX:XX:XX:XX:XX:XX
Drives:
  Local Storage: total: 704.24 GiB used: 26.12 GiB (3.7%)
  ID-1: /dev/sda vendor: Samsung model: SSD 860 EVO 500GB size: 465.76 GiB
  ID-2: /dev/sdb vendor: Samsung model: MZNLN256HCHP-000H1 size: 238.47 GiB
Partition:
  ID-1: / size: 457.45 GiB used: 26.12 GiB (5.7%) fs: ext4 dev: /dev/sda1
Sensors:
  System Temperatures: cpu: 38.5 C mobo: 0.0 C
  Fan Speeds (RPM): N/A

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1877476/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1877476

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Mike (michael-ubu-pan)]

Please provide what do you need more than I have already attached (lspci) and I review required reports against privacy info.

[Mike (michael-ubu-pan)]

I have checked ppa mainline kernel 5.4.14 and 5.6 with the same resume from hibernate problematic behavior(The i915 drivers are updated there).
Update: still exists in 5.13.
I don't use Spotify.
Memory is free:
free -m
              total used free shared buff/cache available
Mem: 15883 1319 12755 362 1808 13918
Swap: 18431 0 18431