Public bug reported:
It seems that external monitors are not supported with the new kernel 6.19.
They stay in stand-by mode. During wake-uping even the primary monitor freezes.
After returning to 6.17.0-5-generic everything works.
Thank you in advance.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: linux-image-generic-6.19 (not installed)
ProcVersionSignature: Ubuntu 6.17.0-5.5-generic 6.17.0-rc7
Uname: Linux 6.17.0-5-generic x86_64
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Thu Feb 12 11:17:30 2026
IwDevWlp0s20f3Link: Not connected.
MachineType: LENOVO 21DE001EUS
ProcFB:
0 nouveaudrmfb
1 i915drmfb
ProcKernelCmdLine: root=/dev/mapper/cryptlinux rootfstype=btrfs
rootflags=rw,noatime,compress=zstd:6,ssd,space_cache=v2,subvol=@
resume=/dev/mapper/cryptlinux resume_offset=5907511 sysrq_always_enabled=1
panic=100
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
firmware-sof N/A
linux-firmware 20260108.gitd86b47f7-0ubuntu1
SourcePackage: linux
UpgradeStatus: Upgraded to resolute on 2026-02-11 (1 days ago)
WifiSyslog:
dmi.bios.date: 12/09/2025
dmi.bios.release: 1.30
dmi.bios.vendor: LENOVO
dmi.bios.version: N3JET46W (1.30 )
dmi.board.asset.tag: Not Available
dmi.board.name: 21DE001EUS
dmi.board.vendor: LENOVO
dmi.board.version: SDK0T76528 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.ec.firmware.release: 1.15
dmi.modalias:
dmi:bvnLENOVO:bvrN3JET46W(1.30):bd12/09/2025:br1.30:efr1.15:svnLENOVO:pn21DE001EUS:pvrThinkPadX1ExtremeGen5:rvnLENOVO:rn21DE001EUS:rvrSDK0T76528WIN:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_21DE_BU_Think_FM_ThinkPadX1ExtremeGen5:
dmi.product.family: ThinkPad X1 Extreme Gen 5
dmi.product.name: 21DE001EUS
dmi.product.sku: LENOVO_MT_21DE_BU_Think_FM_ThinkPad X1 Extreme Gen 5
dmi.product.version: ThinkPad X1 Extreme Gen 5
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug external-monitor resolute sleeping wayland-session
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https://bugs.launchpad.net/bugs/2141652
Title:
Linux kernel 6.19 broke external monitors
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