Was linux-firmware the only package upgraded, or were other packages
also upgraded at the same time? Have you confirmed that reverting back
to linux-firmware 1.197 fixes the issue?
** Changed in: linux-firmware (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1931900
Title:
Linux-firmware 1.197.1 breaks dual monitor on RX480, shows mirror
display with "Unknown Device" under GUI
Status in linux-firmware package in Ubuntu:
Incomplete
Bug description:
linux-firmware 1.197.1 after updating, breaks dual displays on hdmi with
RX480 on kernel
# lsb_release -a
LSB Version:
core-11.1.0ubuntu2-noarch:printing-11.1.0ubuntu2-noarch:security-11.1.0ubuntu2-noarch
Distributor ID: Ubuntu
Description: Ubuntu 21.04
Release: 21.04
Codename: hirsute
# lshw -c video
*-display
description: VGA compatible controller
product: Ellesmere [Radeon RX 470/480/570/570X/580/580X/590]
vendor: Advanced Micro Devices, Inc. [AMD/ATI]
physical id: 0
bus info: pci@0000:01:00.0
logical name: /dev/fb0
version: c7
width: 64 bits
clock: 33MHz
capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
fb
configuration: depth=32 driver=amdgpu latency=0 mode=1920x1080
visual=truecolor xres=1920 yres=1080
resources: iomemory:420-41f iomemory:410-40f irq:143
memory:4200000000-43ffffffff memory:4100000000-41001fffff ioport:3000(size=256)
memory:50800000-5083ffff memory:c0000-dffff
# lspci -k | grep -EA3 'VGA|3D|Display'
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] (rev c7)
Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Radeon RX 480
Kernel driver in use: amdgpu
Kernel modules: amdgpu
# glxinfo -B
name of display: :0
display: :0 screen: 0
direct rendering: Yes
Extended renderer info (GLX_MESA_query_renderer):
Vendor: AMD (0x1002)
Device: AMD Radeon (TM) RX 480 Graphics (POLARIS10, DRM 3.40.0,
5.11.0-16-generic, LLVM 11.0.1) (0x67df)
Version: 21.0.1
Accelerated: yes
Video memory: 8192MB
Unified memory: no
Preferred profile: core (0x1)
Max core profile version: 4.6
Max compat profile version: 4.6
Max GLES1 profile version: 1.1
Max GLES[23] profile version: 3.2
Memory info (GL_ATI_meminfo):
VBO free memory - total: 7571 MB, largest block: 7571 MB
VBO free aux. memory - total: 7892 MB, largest block: 7892 MB
Texture free memory - total: 7571 MB, largest block: 7571 MB
Texture free aux. memory - total: 7892 MB, largest block: 7892 MB
Renderbuffer free memory - total: 7571 MB, largest block: 7571 MB
Renderbuffer free aux. memory - total: 7892 MB, largest block: 7892 MB
Memory info (GL_NVX_gpu_memory_info):
Dedicated video memory: 8192 MB
Total available memory: 16384 MB
Currently available dedicated video memory: 7571 MB
OpenGL vendor string: AMD
OpenGL renderer string: AMD Radeon (TM) RX 480 Graphics (POLARIS10, DRM
3.40.0, 5.11.0-16-generic, LLVM 11.0.1)
OpenGL core profile version string: 4.6 (Core Profile) Mesa 21.0.1
OpenGL core profile shading language version string: 4.60
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL version string: 4.6 (Compatibility Profile) Mesa 21.0.1
OpenGL shading language version string: 4.60
OpenGL context flags: (none)
OpenGL profile mask: compatibility profile
OpenGL ES profile version string: OpenGL ES 3.2 Mesa 21.0.1
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20
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