** Description changed: SRU Justification: [Impact] On HP AMDGPU platform running the 6.14.0-1005-oem kernel, the monitor screen never appeared when booting the system with a Thunderbolt cable connected. However, we were still able to SSH into the system, suggesting that it had booted successfully. + + For the Noble and Plucky generic kernels, they have been classified as + "won't fix" since the bug only occurrs on a specific platform. For users + on that platform, we recommend using our Noble 6.14-OEM kernel, which + includes the appropriate fix. [Fix] Updates are required for both the Linux AMDGPU driver and the linux-firmware package. - Linux AMDGPU driver: cherry-pick the following commit from the Linux mainline: 59510792baa drm/amd/display: Assign preferred stream encoder instance to dpia - linux-firmware: backport the following commits from the upstream linux-firmware repository: 1. b3049665a5d amdgpu: DMCUB updates for various AMDGPU ASICs 2. 61d257d5a8b amdgpu: DMCUB updates for various ASICs 3. 5602c7293e6 amdgpu: DMCUB updates for various ASICs 4. b0e96674082 amdgpu: DMCUB updates for various ASICs 5. a2aaefe5a59 amdgpu: update dcn 3.5 firmware to 0.1.0.0 6. a80a8bd73e0 amdgpu: update dcn 3.5 and dcn 3.5.1 firmware to 9.0.27.0 7. 25750add9b7 amdgpu: DMCUB updates for various ASICs 8. 5ac6303062 amdgpu: DMCUB updates for various ASICs Be aware that only amdgpu/dcn_3_5_1_dmcub.bin and amdgpu/dcn_3_5_dmcub.bin are updated by the above commits. Updates to other files were intentionally omitted. [Test Plan] + ========= On Noble 6.14-OEM ================== + - Prerequisites: + 1. Install the linux-oem-6.14 version 6.14.0-1006.6 kernel from -proposed [1] + 2. Install the linux-firmware version 20240318.git3b128b60-0ubuntu2.14 from -proposed [1] + + - Test instructions: 1. Connect the machine to an external monitor using a Thunderbolt cable before booting. - 2. Boot the system using the Noble OEM 6.14 kernel + 2. Boot the system using the Noble 6.14.0-1005-oem kernel 3. Verify that the display output appears on the monitor and the GNOME desktop environment is visible. + + ========= On Noble/Plucky generic ================== + - Prerequisites: + 1. Install the Noble or Plucky generic kernel + 2. If you will be running the Noble generic kernel, please install the linux-firmware version 20240318.git3b128b60-0ubuntu2.14 from -proposed [1]. Otherwise, please install the linux-firmware version 20250317.git1d4c88ee-0ubuntu1.3 from -proposed[1]. + + - Test instructions: + 1. Boot the system using the Noble or Plucky generic kernel + 2. Since this bug was intended to be fixed only in the Noble 6.14-OEM kernel, it is expected to still reproduce on the Noble and Plucky generic kernels. Please + test all other functionalities to verify whether there are any regressions. + [Where problems could occur] We updated the firmware to the latest version, while the Linux AMDGPU driver remains behind the mainline. As a consequence, a mismatch might occur between the Linux AMDGPU driver and the firmware. + + + [1] See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2112518 Title: [AMDGPU] No display during boot on AMDGPU system with Thunderbolt- connected monitor To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/2112518/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
