Relevant information may be:

c1:00.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 XL 
Upstream Port of PCI Express Switch [1002:1478] (rev 10) (prog-if 00 [Normal 
decode])
        Flags: bus master, fast devsel, latency 0, IRQ 38, NUMA node 0
        Memory at d8e00000 (32-bit, non-prefetchable) [size=16K]
        Bus: primary=c1, secondary=c2, subordinate=c3, sec-latency=0
        I/O behind bridge: b000-bfff [size=4K] [16-bit]
        Memory behind bridge: d8c00000-d8dfffff [size=2M] [32-bit]
        Prefetchable memory behind bridge: 17000000000-1780fffffff 
[size=33024M] [32-bit]
        Capabilities: <access denied>
        Kernel driver in use: pcieport

c2:00.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 XL 
Downstream Port of PCI Express Switch [1002:1479] (rev 10) (prog-if 00 [Normal 
decode])
        Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 XL Downstream 
Port of PCI Express Switch [1002:1479]
        Flags: bus master, fast devsel, latency 0, IRQ 39, NUMA node 0
        Bus: primary=c2, secondary=c3, subordinate=c3, sec-latency=0
        I/O behind bridge: b000-bfff [size=4K] [16-bit]
        Memory behind bridge: d8c00000-d8dfffff [size=2M] [32-bit]
        Prefetchable memory behind bridge: 17000000000-1780fffffff 
[size=33024M] [32-bit]
        Capabilities: <access denied>
        Kernel driver in use: pcieport

c3:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. 
[AMD/ATI] Navi 31 [Radeon RX 7900 XT/7900 XTX] [1002:744c] (rev c8) (prog-if 00 
[VGA controller])
        Subsystem: Tul Corporation / PowerColor Device [148c:2422]
        Flags: bus master, fast devsel, latency 0, IRQ 94, NUMA node 0
        Memory at 17000000000 (64-bit, prefetchable) [size=32G]
        Memory at 17800000000 (64-bit, prefetchable) [size=256M]
        I/O ports at b000 [size=256]
        Memory at d8c00000 (32-bit, non-prefetchable) [size=1M]
        Expansion ROM at d8d00000 [disabled] [size=128K]
        Capabilities: <access denied>
        Kernel driver in use: amdgpu
        Kernel modules: amdgpu

c3:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Device 
[1002:ab30]
        Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Device [1002:ab30]
        Flags: bus master, fast devsel, latency 0, IRQ 111, NUMA node 0
        Memory at d8d20000 (32-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel driver in use: snd_hda_intel
        Kernel modules: snd_hda_intel


** Attachment added: "lspci -vnn.txt"
   
https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/2038864/+attachment/5708064/+files/lspci%20-vnn.txt

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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-firmware in Ubuntu.
https://bugs.launchpad.net/bugs/2038864

Title:
  20230323.gitbcdcfbcf-0ubuntu1.7 hangs on boot with amdgpu

Status in linux-firmware package in Ubuntu:
  New

Bug description:
  [Impact]

  20230323.gitbcdcfbcf-0ubuntu1.7 borks amdgpu during boot, it
  completely hangs the entire kernel on a RX 7900 XTX. Reverting back to
  20230323.gitbcdcfbcf-0ubuntu1.2 made the kernel boot properly again.

  
  [Fix]

  Revert AMD firmware updates.

  [Test Case]

  Boot a machine with an affected AMD GPU.

  [Where Problems Could Occur]

  Machines with AMD GPUs might not boot or crash.

  This on Ubuntu 23.04 and 6.2.0-34-generic, but since the previous
  firmware worked I assume that the kernel version is not important here
  and it more is that the 1.7 update contains a firmware for the
  rx7900xtx that hangs it. Also booting to recovery and trying to enter
  non-graphical recovery mode worked just fine.

  This may be a very similar issue to
  https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/2029396

To manage notifications about this bug go to:
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