** 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. [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] 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 3. Verify that the display output appears on the monitor and the GNOME desktop environment is visible. [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.
-- 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
