Public bug reported:
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: cherry-pick 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. a80a8bd73e0 amdgpu: update dcn 3.5 and dcn 3.5.1 firmware to 9.0.27.0
6. 25750add9b7 amdgpu: DMCUB updates for various ASICs
[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.
** Affects: hwe-next
Importance: Undecided
Status: New
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Won't Fix
** Affects: linux-firmware (Ubuntu)
Importance: Undecided
Assignee: En-Wei Wu (rickywu)
Status: In Progress
** Affects: linux-oem-6.14 (Ubuntu)
Importance: Undecided
Status: Invalid
** Affects: linux (Ubuntu Noble)
Importance: Undecided
Status: Won't Fix
** Affects: linux-firmware (Ubuntu Noble)
Importance: Undecided
Status: In Progress
** Affects: linux-oem-6.14 (Ubuntu Noble)
Importance: Undecided
Status: In Progress
** Affects: linux (Ubuntu Plucky)
Importance: Undecided
Status: Won't Fix
** Affects: linux-firmware (Ubuntu Plucky)
Importance: Undecided
Status: In Progress
** Affects: linux-oem-6.14 (Ubuntu Plucky)
Importance: Undecided
Status: Invalid
** Tags: jira-stella-1032 oem-priority stella
** Also affects: linux-oem-6.14 (Ubuntu)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Noble)
Importance: Undecided
Status: New
** Also affects: linux-oem-6.14 (Ubuntu Noble)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Plucky)
Importance: Undecided
Status: New
** Also affects: linux-oem-6.14 (Ubuntu Plucky)
Importance: Undecided
Status: New
** Also affects: linux-firmware (Ubuntu)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu)
Status: New => Won't Fix
** Changed in: linux (Ubuntu Noble)
Status: New => Won't Fix
** Changed in: linux (Ubuntu Plucky)
Status: New => Won't Fix
** Changed in: linux-firmware (Ubuntu)
Status: New => In Progress
** Changed in: linux-firmware (Ubuntu Noble)
Status: New => In Progress
** Changed in: linux-firmware (Ubuntu Plucky)
Status: New => In Progress
** Changed in: linux-firmware (Ubuntu)
Assignee: (unassigned) => En-Wei Wu (rickywu)
** Changed in: linux-oem-6.14 (Ubuntu)
Status: New => Invalid
** Changed in: linux-oem-6.14 (Ubuntu Plucky)
Status: New => Incomplete
** Changed in: linux-oem-6.14 (Ubuntu Plucky)
Status: Incomplete => Invalid
** Changed in: linux-oem-6.14 (Ubuntu Noble)
Status: New => In Progress
** Tags added: jira-stella-1032 oem-priority stella
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https://bugs.launchpad.net/bugs/2112518
Title:
[AMDGPU] No display during boot on AMDGPU system with Thunderbolt-
connected monitor
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