*** This bug is a duplicate of bug 2173041 ***
https://bugs.launchpad.net/bugs/2173041
Additional confirmed reproduction — Sapphire Radeon RX 9070 XT / Zorin
OS 18
I experienced the same regression after upgrading linux-firmware-amd-
graphics from 20240318.git3b128b60-0ubuntu3.3 to
20240318.git3b128b60-0ubuntu3.4.
Hardware and software:
GPU: Sapphire AMD Radeon RX 9070 XT
PCI ID: 1002:7550
Subsystem ID: 1da2:e490
OS: Zorin OS 18 (Ubuntu 24.04 Noble base)
Installed kernels: 7.0.0-42-generic, 7.0.0-38-generic, 6.8.0-147-generic
Symptoms:
After the firmware package upgrade, the machine displayed the
motherboard splash screen and then went to a black screen. The system
could still be accessed using a live USB.
Confirmed workaround:
Downgraded linux-firmware-amd-graphics to
20240318.git3b128b60-0ubuntu3.3.
Placed the package on hold using apt-mark hold linux-firmware-amd-
graphics.
Regenerated initramfs images for all three installed kernels using
update-initramfs -u -k all.
Verified that /lib/firmware/amdgpu/dcn_4_0_1_dmcub.bin.zst is a regular
225,553-byte file, not a symbolic link.
Rebooted successfully. Normal graphical boot was restored.
This confirms that the reported firmware packaging regression also
affects Sapphire RX 9070 XT hardware running Zorin OS 18 on the Ubuntu
Noble base.
Please ensure the corrected firmware package is made available through
Noble updates before users are encouraged to upgrade from 0ubuntu3.3.
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https://bugs.launchpad.net/bugs/2173163
Title:
[regression] 0ubuntu3.4 ships dcn_4_0_1_dmcub.bin.zst as symlink to
dcn_3_2_0 firmware – black screen on RX 9070 (Navi 48)
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