amdgpu drivers crashe is very often

[Serg]

HP ProBook 455 G6 (6MQ06EA#ACB)

Has been installed ubuntu-18.04.4-desctop-amd64, uname:
Linux probook 5.3.0-40-generic #32~18.04.1-Ubuntu SMP Mon Feb 3 14:05:59 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

linux-generic-hwe-18.04: Installed: 5.3.0.40.97
linux-firmware: Installed: 1.173.15

After installation has been detected often 'screen freeze' or 'black screen' during boot time which can be avoided by hard reset only.

BIOS has been upgraded to latest version 01.09.00 Rev.A, 28 Oct 2019

For problem investigation has been disabled Xorg/GDM3 startup on boot time by:
systemctl set-default multi-user.target
And disable 'quet spalsh' kernel boot parameters in grub

Now I can see booting process and reboot system by [ctrl]+[alt]+[del] if terminal is freezing. And have system when I can successively booting one time per 3-9 attempts.

Bad boot attempts contain lines in /var/log/syslog (see attachment) like:
=========[cut]=======================
Mar 3 14:41:27 probook kernel: [ 5.876763] [drm] BIOS signature incorrect 0 0
Mar 3 14:41:27 probook kernel: [ 5.876781] resource sanity check: requesting [mem 0x000c0000-0x000dffff], which spans more than PCI Bus 0000:00 [mem 0x000c0000-0x000c3fff window]
Mar 3 14:41:27 probook kernel: [ 5.876787] caller pci_map_rom+0x71/0x1d0 mapping multiple BARs
Mar 3 14:41:27 probook kernel: [ 5.876796] amdgpu 0000:05:00.0: Invalid PCI ROM header signature: expecting 0xaa55, got 0xffff
Mar 3 14:41:27 probook kernel: [ 5.898606] [drm] BIOS signature incorrect 0 0
Mar 3 14:41:27 probook kernel: [ 5.898699] [drm:amdgpu_get_bios [amdgpu]] *ERROR* Unable to locate a BIOS ROM
Mar 3 14:41:27 probook kernel: [ 5.898710] amdgpu 0000:05:00.0: Fatal error during GPU init
Mar 3 14:41:27 probook kernel: [ 5.898714] [drm] amdgpu: finishing device.
Mar 3 14:41:27 probook kernel: [ 5.898742] ------------[ cut here ]------------

=====================================
with followed crash report

Updating AMD Graphics modules from vendor site:
https://www.amd.com/en/support/kb/release-notes/rn-amdgpu-unified-linux
cannot help me ;(
but hangs began to happen less often

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-generic-hwe-18.04 5.3.0.40.97
ProcVersionSignature: Ubuntu 5.3.0-40.32~18.04.1-generic 5.3.18
Uname: Linux 5.3.0-40-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.11
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Tue Mar 3 21:11:31 2020
InstallationDate: Installed on 2020-02-27 (5 days ago)
InstallationMedia: Ubuntu 18.04.4 LTS "Bionic Beaver" - Release amd64 (20200203.1)
SourcePackage: linux-meta-hwe
UpgradeStatus: No upgrade log present (probably fresh install)

[Matias N. Goldberg (dark-sylinc)]

Try installing the latest firmware from git:

1. Make a backup of /lib/firmware
2. Download the latest firmware package e.g. https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/snapshot/linux-firmware-20200519.tar.gz
3. Unzip it
4. sudo make install
5. Reboot your system

If you're lucky like me and it makes your system stable, then remember to freeze the package 'linux-firmware' to prevent an update from overwriting your changes and making your system unstable again.

[Serg (frast)]

Hi Matias!
Thanks for your suggestion, but it did not help me ;(
Hangs are occurring periodically as with previous version of firmware.

In any way, thanks!