This bug was fixed in the package linux-oem-5.14 - 5.14.0-1013.13
---------------
linux-oem-5.14 (5.14.0-1013.13) focal; urgency=medium
* focal/linux-oem-5.14: 5.14.0-1013.13 -proposed tracker (LP:
#1955464)
* devices on thunderbolt dock are not recognized on adl-p platform
(LP: #1955016)
- SAUCE: thunderbolt: Runtime PM activate both ends of the device link
- SAUCE: thunderbolt: Tear down existing tunnels when resuming from
hibernate
- SAUCE: thunderbolt: Runtime resume USB4 port when retimers are scanned
- SAUCE: thunderbolt: Do not allow subtracting more NFC credits than
configured
- SAUCE: thunderbolt: Do not program path HopIDs for USB4 routers
- SAUCE: thunderbolt: Add debug logging of DisplayPort resource allocation
-- Chia-Lin Kao (AceLan) <acelan....@canonical.com> Tue, 21 Dec 2021
16:59:25 +0800
** Changed in: linux-oem-5.14 (Ubuntu Focal)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1954728
Title:
Fix No Screen after login to Desktop on sku with 3840x2400 panel
Status in HWE Next:
New
Status in OEM Priority Project:
In Progress
Status in linux package in Ubuntu:
In Progress
Status in linux-oem-5.14 package in Ubuntu:
New
Status in linux source package in Focal:
New
Status in linux-oem-5.14 source package in Focal:
Fix Released
Status in linux source package in Jammy:
In Progress
Status in linux-oem-5.14 source package in Jammy:
New
Bug description:
[Impact]
Got kernel report CPU pipe A FIFO underrun: soft,transcoder
kernel: i915 0000:00:02.0: [drm] *ERROR* CPU pipe A FIFO underrun:
soft,transcoder,
[Fix]
Fix has been landed on linux-next, 4fe7907f3775(drm/i915/display/adlp:
Disable underrun recovery).
Defeature the underrun feature for intel display gen13+.
[Test Case]
1. change resolution to 3840x2400
2. monitor works well and doesn't black out.
[Where problems could occur]
low
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