Bug#922559: Firmware locks up on Vega 8

From	Brian Holaday <brian@codemonkeyrawks.net>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#922559: Firmware locks up on Vega 8
Date	2019-02-18 06:40 +0100
Message-ID	<xsJON-4NL-1@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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Package: firmware-amd-graphics
Version: 20180825+dfsg-1~bpo9+1

Laptop Information
- Inspiron 5775
- AMD Ryzen 5 - 2500U CPU
- Radeon Vega 8 GPU (Shared with CPU)

Kernel: 4.19.0-0.bpo.2-amd64, 4.19.16-1~bpo9+1

- Without Package Debian Stretch works fine with one config change:
/etc/default/grub/
* see notes

Steps to Reproduce:

* This assumes stretch-backports is installed *

#1. Install ATI Firmware:
#sudo apt-get install -t stretch-backports firmware-amd-graphics

#2. Reboot Install:
# After reboot - kernel loads just fine but then when it hits the
gnome-shell login screen the system locks up (cursor has no movement) and
only a grey background is shown.

Here is part of my log what I seem to show:
 gnome-session[857]: gnome-session-binary[857]: WARNING: App
'org.gnome.Shell.desktop' exited with code 1

Without the firmware-driver I can get gnome-shell to launch just fine
however for my laptop I have to set the following up for proper screen
booting: /etc/default/grub/ (see below). Even commenting these in/out still
produce a lock when the firmware is installed does not lock when firmware
is not installed.

* Yes: this is close *
> GFXMODE=1920x1080x32
> GFXPAYLOAD=keep


Last Note: Running Fedora live with vga=3d4 or vga=755 seems to boot up: I
have less lockup problems and HDMI is fully supported. Right now even with
the firmware there is no HDMI output using Debian Stretch. I don't know if
this has to do with a newer firmware of Fedora for AMD ATI and/or the
Kernel or if Mesa also is updated such that for the most part things are
working. I expect Buster to be working fully if what is pulled in is
updated.

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Bug#922559: Firmware locks up on Vega 8 Brian Holaday <brian@codemonkeyrawks.net> - 2019-02-18 06:40 +0100
  Bug#922559: Firmware locks up on Vega 8 maximilian attems <maks@stro.at> - 2021-03-18 11:10 +0100
    Processed: Re:  Firmware locks up on Vega 8 "Debian Bug Tracking System" <owner@bugs.debian.org> - 2021-03-18 11:10 +0100

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