dGPU cannot resume because system firmware stuck in IPCS method
Bug #2021572 reported by
Kai-Heng Feng
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
HWE Next |
New
|
Undecided
|
Unassigned | ||
linux (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
Jammy |
Invalid
|
Undecided
|
Unassigned | ||
Lunar |
Fix Released
|
High
|
Unassigned | ||
linux-oem-6.1 (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
Jammy |
Fix Released
|
High
|
Unassigned | ||
Lunar |
Invalid
|
Undecided
|
Unassigned |
Bug Description
[Impact]
When a dGPU on a laptop is in PCIe D3cold and TBT port is connected to a monitor via a cable, unplugging the cable will make the dGPU unable to resume to D0.
[Fix]
There's a part of system firmware, IOM, need the driver to disconnect all TBT/Type-C phy to let dGPU function normally.
[Test]
With the fix applied, the dGPU continues to work after replugging video cable many times.
[Where problems could occur]
The fix is composed of several overhaul, so it's likely to regression i915 GFX driver. To limit the impact, only target OEM kernel for now.
Changed in linux-oem-6.1 (Ubuntu Jammy): | |
status: | New → Confirmed |
importance: | Undecided → High |
Changed in linux-oem-6.1 (Ubuntu): | |
status: | New → Invalid |
tags: | added: oem-priority originate-from-2012589 stella |
tags: | added: originate-from-1955560 |
tags: | added: originate-from-1969426 |
tags: | added: originate-from-1943101 |
Changed in linux-oem-6.1 (Ubuntu Jammy): | |
status: | Confirmed → Fix Committed |
tags: | added: verification-needed-jammy |
Changed in linux (Ubuntu Jammy): | |
status: | New → Invalid |
Changed in linux (Ubuntu): | |
status: | New → Confirmed |
tags: |
added: verification-done-jammy removed: verification-needed-jammy |
tags: |
added: verification-done-jammy removed: verification-needed-jammy |
Changed in linux-oem-6.1 (Ubuntu Lunar): | |
status: | New → Invalid |
Changed in linux (Ubuntu Lunar): | |
status: | New → Confirmed |
importance: | Undecided → High |
Changed in linux (Ubuntu Lunar): | |
status: | Confirmed → Fix Committed |
tags: |
added: verification-done-lunar-linux removed: verification-needed-lunar-linux |
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This bug is awaiting verification that the linux-oem- 6.1/6.1. 0-1016. 16 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification- needed- jammy' to 'verification- done-jammy' . If the problem still exists, change the tag 'verification- needed- jammy' to 'verification- failed- jammy'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.
See https:/ /wiki.ubuntu. com/Testing/ EnableProposed for documentation how to enable and use -proposed. Thank you!