*** This bug is a duplicate of bug 2173041 ***
https://bugs.launchpad.net/bugs/2173041
I can confirm this issue on **Ubuntu 24.04.5 LTS**, kernel
**7.0.0-42-generic**, with a **Gigabyte Radeon RX 9070 XT** (PCI ID
1002:7550, subsystem 1458:2424).
With `linux-firmware-amd-graphics` version
`20240318.git3b128b60-0ubuntu3.4` installed, my system became extremely
slow, including boot and desktop responsiveness. Moving the DisplayPort
cable to the motherboard's integrated graphics made the system usable
again, but the dedicated GPU continued reporting errors.
Relevant kernel log messages:
```
amdgpu 0000:03:00.0: failed to load ucode DMCUB(0x3F)
amdgpu 0000:03:00.0: psp gfx command LOAD_IP_FW(0x6) failed and response status
is (0x11)
amdgpu 0000:03:00.0: [drm] Wait for DMUB auto-load failed: 3
amdgpu 0000:03:00.0: [drm] *ERROR* dc_dmub_srv_log_diagnostic_data: DMCUB error
- collecting diagnostic data
amdgpu 0000:03:00.0: SMU: No response msg_reg: 2b resp_reg: 0
amdgpu 0000:03:00.0: late_init of IP block <smu> failed -62
```
I confirmed that `/lib/firmware/amdgpu/dcn_4_0_1_dmcub.bin.zst` was
incorrectly symlinked to `dcn_3_2_0_dmcub.bin.zst`.
**Temporary workaround:** I downgraded `linux-firmware-amd-graphics` to
`0ubuntu3.3`, restoring the correct 225553-byte firmware file. After
rebooting, the severe slowdown disappeared and the RX 9070 XT became
usable again.
This appears to be the same firmware regression reported here. I am
keeping version `0ubuntu3.3` installed until a corrected package is
available.
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2173040
Title:
linux-firmware-amd-graphics 0ubuntu3.4: dcn_4_0_1_dmcub.bin.zst is a
symlink to dcn_3_2_0_dmcub.bin.zst, RX 9070 XT DMUB load fails, no
display manager
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/2173040/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
