Public bug reported:
After resume from suspend, the internal laptop monitor (eDP-1) stays
black while the external HDMI monitor turns on.
The logs show: i915 0000:00:02.0: [drm] *ERROR*
[CONNECTOR:507:eDP-1][ENCODER:506:DDI A/PHY A][DPRX] Failed to enable
link training .
Workaround that helps: adding i915.enable_psr=0 i915.enable_dc=0 to
kernel parameters.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: linux-image-7.0.0-22-generic 7.0.0-22.22
ProcVersionSignature: Ubuntu 7.0.0-22.22-generic 7.0.0
Uname: Linux 7.0.0-22-generic x86_64
ApportVersion: 2.34.0-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Thu Jun 4 14:28:23 2026
InstallationDate: Installed on 2026-04-27 (38 days ago)
InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1)
IwDevWlp4s0Link: Not connected.
MachineType: HP Victus by HP Gaming Laptop 15-fa0xxx
ProcFB:
0 i915drmfb
1 nvidia-drmdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-22-generic
root=UUID=efc1b9e5-9810-4f5d-b2b3-d4ebbe04d955 ro quiet splash
i915.enable_psr=0 i915.enable_dc=0
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/22/2025
dmi.bios.release: 15.31
dmi.bios.vendor: AMI
dmi.bios.version: F.31
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 8A4F
dmi.board.vendor: HP
dmi.board.version: 37.56
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.chassis.version: Chassis Version
dmi.ec.firmware.release: 37.56
dmi.modalias:
dmi:bvnAMI:bvrF.31:bd04/22/2025:br15.31:efr37.56:svnHP:pnVictusbyHPGamingLaptop15-fa0xxx:pvr:rvnHP:rn8A4F:rvr37.56:cvnHP:ct10:cvrChassisVersion:sku6X7N4EA#UUQ:pfa103C_5335M7HPVictus:
dmi.product.family: 103C_5335M7 HP Victus
dmi.product.name: Victus by HP Gaming Laptop 15-fa0xxx
dmi.product.sku: 6X7N4EA#UUQ
dmi.sys.vendor: HP
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
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https://bugs.launchpad.net/bugs/2155235
Title:
Intel i915 eDP-1 "Failed to enable link training" after suspend on
Alder Lake
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